示例#1
0
class UserRank(db.Model):
    id = db.Column(db.Integer(), primary_key=True)
    user_id = db.Column(db.ForeignKey("users.id"), nullable=False)
    rank_id = db.Column(db.ForeignKey("ranks.id"))
    user = db.relationship(
        User,
        backref=db.backref("user_rank",
                           uselist=False,
                           cascade="all, delete-orphan",
                           lazy="joined"),
        uselist=False,
        lazy="joined",
        foreign_keys=[user_id],
    )

    rank = db.relationship(
        Rank,
        backref=db.backref("user_ranks",
                           lazy="joined",
                           cascade="all, delete-orphan"),
        uselist=False,
        lazy="joined",
        foreign_keys=[rank_id],
    )

    name = association_proxy("rank", "rank_name")
    code = association_proxy("rank", "rank_code")

    def is_custom(self):
        return self.rank.is_custom()

    def __repr__(self):
        return "<UserRank user={} name={}>".format(self.user.username,
                                                   self.name)
示例#2
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class PrivateMessage(db.Model):
    __tablename__ = "privatemessages"

    id = db.Column(db.Integer, primary_key=True)
    user_id = db.Column(db.Integer, db.ForeignKey("users.id"), nullable=False)
    from_user_id = db.Column(db.Integer, db.ForeignKey("users.id"))
    to_user_id = db.Column(db.Integer, db.ForeignKey("users.id"))
    subject = db.Column(db.String(255))
    message = db.Column(db.Text)
    date_created = db.Column(db.DateTime, default=datetime.utcnow())
    trash = db.Column(db.Boolean, nullable=False, default=False)
    draft = db.Column(db.Boolean, nullable=False, default=False)
    unread = db.Column(db.Boolean, nullable=False, default=True)

    user = db.relationship("User",
                           backref="pms",
                           lazy="joined",
                           foreign_keys=[user_id])
    from_user = db.relationship("User",
                                lazy="joined",
                                foreign_keys=[from_user_id])
    to_user = db.relationship("User", lazy="joined", foreign_keys=[to_user_id])

    def save(self, from_user=None, to_user=None, user_id=None, draft=False):
        """Saves a private message.

        :param from_user: The user who has sent the message

        :param to_user: The user who should recieve the message

        :param user_id: The senders user id - This is the id to which user the
                        Inbox belongs.

        :param draft: If the message is a draft. Defaults to ``False``.
        """

        if self.id:
            db.session.add(self)
            db.session.commit()
            return self

        # Defaults to ``False``.
        self.draft = draft

        # Add the message to the user's pm box
        self.user_id = user_id
        self.from_user_id = from_user
        self.to_user_id = to_user
        self.date_created = datetime.utcnow()

        db.session.add(self)
        db.session.commit()
        return self

    def delete(self):
        """Deletes a private message"""

        db.session.delete(self)
        db.session.commit()
        return self
示例#3
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class Conversation(db.Model, CRUDMixin):
    __tablename__ = "conversations"

    id = db.Column(db.Integer, primary_key=True)
    user_id = db.Column(db.Integer, db.ForeignKey("users.id"), nullable=False)
    from_user_id = db.Column(db.Integer, db.ForeignKey("users.id"))
    to_user_id = db.Column(db.Integer, db.ForeignKey("users.id"))
    shared_id = db.Column(UUIDType, nullable=False)
    subject = db.Column(db.String(255))
    date_created = db.Column(UTCDateTime(timezone=True), default=time_utcnow)
    trash = db.Column(db.Boolean, nullable=False, default=False)
    draft = db.Column(db.Boolean, nullable=False, default=False)
    unread = db.Column(db.Boolean, nullable=False, default=True)

    messages = db.relationship(
        "Message",
        lazy="joined",
        backref="conversation",
        primaryjoin="Message.conversation_id == Conversation.id",
        order_by="asc(Message.id)",
        cascade="all, delete-orphan")

    # this is actually the users message box
    user = db.relationship("User", lazy="joined", foreign_keys=[user_id])
    # the user to whom the conversation is addressed
    to_user = db.relationship("User", lazy="joined", foreign_keys=[to_user_id])
    # the user who sent the message
    from_user = db.relationship("User",
                                lazy="joined",
                                foreign_keys=[from_user_id])

    @property
    def first_message(self):
        """Returns the first message object."""
        return self.messages[0]

    @property
    def last_message(self):
        """Returns the last message object."""
        return self.messages[-1]

    def save(self, message=None):
        """Saves a conversation and returns the saved conversation object.

        :param message: If given, it will also save the message for the
                        conversation. It expects a Message object.
        """
        if message is not None:
            # create the conversation
            self.date_created = time_utcnow()
            db.session.add(self)
            db.session.commit()

            # create the actual message for the conversation
            message.save(self)
            return self

        db.session.add(self)
        db.session.commit()
        return self
示例#4
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class Message(db.Model, CRUDMixin):
    __tablename__ = "messages"

    id = db.Column(db.Integer, primary_key=True)
    conversation_id = db.Column(db.Integer,
                                db.ForeignKey("conversations.id"),
                                nullable=False)

    # the user who wrote the message
    user_id = db.Column(db.Integer, db.ForeignKey("users.id"), nullable=False)
    message = db.Column(db.Text, nullable=False)
    date_created = db.Column(UTCDateTime(timezone=True),
                             default=time_utcnow,
                             nullable=False)

    user = db.relationship("User", lazy="joined")

    def save(self, conversation=None):
        """Saves a private message.

        :param conversation: The  conversation to which the message
                             belongs to.
        """
        if conversation is not None:
            self.conversation = conversation
            conversation.date_modified = time_utcnow()
            self.date_created = time_utcnow()

        db.session.add(self)
        db.session.commit()
        return self
示例#5
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class Subscription(db.Model, CRUDMixin):

    'Forum subscriptions for user'

    __tablename__ = 'subby_subscriptions'

    #: ID of the user
    user_id = db.Column(db.Integer,
                        db.ForeignKey('users.id', ondelete='CASCADE'),
                        primary_key=True,
                        nullable=False)
    #: ID of a forum they subscribe to
    forum_id = db.Column(db.Integer,
                         db.ForeignKey('forums.id', ondelete='CASCADE'),
                         primary_key=True,
                         nullable=False)
    #: Subscription owner
    user = db.relationship('User', lazy='joined', foreign_keys=(user_id, ))
    #: Forum subscribed to
    forum = db.relationship('Forum', lazy='joined', foreign_keys=(forum_id, ))

    def save(self):
        'Saves forum subscription'

        db.session.add(self)
        db.session.commit()

        return self
示例#6
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class ForumsRead(db.Model):
    __tablename__ = "forumsread"

    user_id = db.Column(db.Integer,
                        db.ForeignKey("users.id"),
                        primary_key=True)
    forum_id = db.Column(db.Integer,
                         db.ForeignKey("forums.id",
                                       use_alter=True,
                                       name="fk_fr_forum_id"),
                         primary_key=True)
    last_read = db.Column(db.DateTime, default=datetime.utcnow())
    cleared = db.Column(db.DateTime)

    def __repr__(self):
        return "<{}>".format(self.__class__.__name__)

    def save(self):
        """Saves a ForumsRead entry."""
        db.session.add(self)
        db.session.commit()
        return self

    def delete(self):
        """Deletes a ForumsRead entry."""
        db.session.delete(self)
        db.session.commit()
        return self
示例#7
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class TopicsRead(db.Model):
    __tablename__ = "topicsread"

    user_id = db.Column(db.Integer,
                        db.ForeignKey("users.id"),
                        primary_key=True)
    topic_id = db.Column(db.Integer,
                         db.ForeignKey("topics.id",
                                       use_alter=True,
                                       name="fk_tr_topic_id"),
                         primary_key=True)
    forum_id = db.Column(db.Integer,
                         db.ForeignKey("forums.id",
                                       use_alter=True,
                                       name="fk_tr_forum_id"),
                         primary_key=True)
    last_read = db.Column(db.DateTime, default=datetime.utcnow())

    def save(self):
        db.session.add(self)
        db.session.commit()
        return self

    def delete(self):
        db.session.delete(self)
        db.session.commit()
        return self
示例#8
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class ForumsRead(db.Model, CRUDMixin):
    __tablename__ = "forumsread"

    user_id = db.Column(db.Integer, db.ForeignKey("users.id"),
                        primary_key=True)
    forum_id = db.Column(db.Integer,
                         db.ForeignKey("forums.id", use_alter=True,
                                       name="fk_fr_forum_id"),
                         primary_key=True)
    last_read = db.Column(UTCDateTime(timezone=True), default=time_utcnow)
    cleared = db.Column(UTCDateTime(timezone=True))
示例#9
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class Report(db.Model, CRUDMixin):
    __tablename__ = "reports"

    # TODO: Store in addition to the info below topic title and username
    # as well. So that in case a user or post gets deleted, we can
    # still view the report

    id = db.Column(db.Integer, primary_key=True)
    reporter_id = db.Column(db.Integer,
                            db.ForeignKey("users.id"),
                            nullable=True)
    reported = db.Column(UTCDateTime(timezone=True),
                         default=time_utcnow,
                         nullable=False)
    post_id = db.Column(db.Integer, db.ForeignKey("posts.id"), nullable=True)
    zapped = db.Column(UTCDateTime(timezone=True), nullable=True)
    zapped_by = db.Column(db.Integer, db.ForeignKey("users.id"), nullable=True)
    reason = db.Column(db.Text, nullable=True)

    post = db.relationship("Post",
                           lazy="joined",
                           backref=db.backref('report',
                                              cascade='all, delete-orphan'))
    reporter = db.relationship("User",
                               lazy="joined",
                               foreign_keys=[reporter_id])
    zapper = db.relationship("User", lazy="joined", foreign_keys=[zapped_by])

    def __repr__(self):
        return "<{} {}>".format(self.__class__.__name__, self.id)

    def save(self, post=None, user=None):
        """Saves a report.

        :param post: The post that should be reported
        :param user: The user who has reported the post
        :param reason: The reason why the user has reported the post
        """

        if self.id:
            db.session.add(self)
            db.session.commit()
            return self

        if post and user:
            self.reporter = user
            self.reported = time_utcnow()
            self.post = post

        db.session.add(self)
        db.session.commit()
        return self
示例#10
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class Report(db.Model):
    __tablename__ = "reports"

    id = db.Column(db.Integer, primary_key=True)
    reporter_id = db.Column(db.Integer,
                            db.ForeignKey("users.id"),
                            nullable=False)
    reported = db.Column(db.DateTime, default=datetime.utcnow())
    post_id = db.Column(db.Integer, db.ForeignKey("posts.id"), nullable=False)
    zapped = db.Column(db.DateTime)
    zapped_by = db.Column(db.Integer, db.ForeignKey("users.id"))
    reason = db.Column(db.Text)

    post = db.relationship("Post", backref="report", lazy="joined")
    reporter = db.relationship("User",
                               lazy="joined",
                               foreign_keys=[reporter_id])
    zapper = db.relationship("User", lazy="joined", foreign_keys=[zapped_by])

    def __repr__(self):
        return "<{} {}>".format(self.__class__.__name__, self.id)

    def save(self, post=None, user=None):
        """Saves a report.

        :param post: The post that should be reported

        :param user: The user who has reported the post

        :param reason: The reason why the user has reported the post
        """

        if self.id:
            db.session.add(self)
            db.session.commit()
            return self

        if post and user:
            self.reporter_id = user.id
            self.reported = datetime.utcnow()
            self.post_id = post.id

        db.session.add(self)
        db.session.commit()
        return self

    def delete(self):
        """Deletes a report."""
        db.session.delete(self)
        db.session.commit()
        return self
示例#11
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class ForumsRead(db.Model, CRUDMixin):
    __tablename__ = "forumsread"

    user_id = db.Column(db.Integer,
                        db.ForeignKey("users.id", ondelete="CASCADE"),
                        primary_key=True)
    user = db.relationship('User', uselist=False, foreign_keys=[user_id])
    forum_id = db.Column(db.Integer,
                         db.ForeignKey("forums.id", ondelete="CASCADE"),
                         primary_key=True)
    forum = db.relationship('Forum', uselist=False, foreign_keys=[forum_id])
    last_read = db.Column(UTCDateTime(timezone=True), default=time_utcnow,
                          nullable=False)
    cleared = db.Column(UTCDateTime(timezone=True), nullable=True)
示例#12
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 def hidden_by_id(cls):  # noqa: B902
     return db.Column(
         db.Integer,
         db.ForeignKey("users.id",
                       name="fk_{}_hidden_by".format(cls.__name__)),
         nullable=True,
     )
示例#13
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class PluginStore(CRUDMixin, db.Model):
    id = db.Column(db.Integer, primary_key=True)
    key = db.Column(db.Unicode(255), nullable=False)
    value = db.Column(db.PickleType, nullable=False)
    # Available types: string, integer, float, boolean, select, selectmultiple
    value_type = db.Column(db.Enum(SettingValueType), nullable=False)
    # Extra attributes like, validation things (min, max length...)
    # For Select*Fields required: choices
    extra = db.Column(db.PickleType, nullable=True)
    plugin_id = db.Column(
        db.Integer, db.ForeignKey("plugin_registry.id", ondelete="CASCADE"))

    # Display stuff
    name = db.Column(db.Unicode(255), nullable=False)
    description = db.Column(db.Text, nullable=True)

    __table_args__ = (UniqueConstraint('key',
                                       'plugin_id',
                                       name='plugin_kv_uniq'), )

    def __repr__(self):
        return '<PluginSetting plugin={} key={} value={}>'.format(
            self.plugin.name, self.key, self.value)

    @classmethod
    def get_or_create(cls, plugin_id, key):
        """Returns the PluginStore object or an empty one.
        The created object still needs to be added to the database session
        """
        obj = cls.query.filter_by(plugin_id=plugin_id, key=key).first()

        if obj is not None:
            return obj
        return PluginStore()
示例#14
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class SubscriptionSettings(db.Model, CRUDMixin):

    'Subscription settings for user'

    __tablename__ = 'subby_settings'

    #: ID of the user
    user_id = db.Column(db.Integer,
                        db.ForeignKey('users.id', ondelete='CASCADE'),
                        primary_key=True,
                        nullable=False)
    #: Include tracked topics
    tracked_topics = db.Column(db.Boolean, nullable=False, default=False)
    #: Enable email notifications
    email = db.Column(db.Boolean, nullable=False, default=True)
    #: RSS key
    rss_key = db.Column(db.String)
    #: Settings owner
    user = db.relationship('User', lazy='joined', foreign_keys=(user_id, ))

    def save(self):
        'Saves subscription settings'

        if not self.rss_key:
            self.rss_key = SubscriptionSettings._regenerate_rss_key()

        db.session.add(self)
        db.session.commit()

    @staticmethod
    def _regenerate_rss_key():
        'Regenerates unique RSS key'

        return str(uuid4())
示例#15
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class TopicsRead(db.Model, CRUDMixin):
    __tablename__ = "topicsread"

    user_id = db.Column(db.Integer,
                        db.ForeignKey("users.id"),
                        primary_key=True)
    topic_id = db.Column(db.Integer,
                         db.ForeignKey("topics.id",
                                       use_alter=True,
                                       name="fk_tr_topic_id"),
                         primary_key=True)
    forum_id = db.Column(db.Integer,
                         db.ForeignKey("forums.id",
                                       use_alter=True,
                                       name="fk_tr_forum_id"),
                         primary_key=True)
    last_read = db.Column(db.DateTime, default=datetime.utcnow())
示例#16
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class TopicsRead(db.Model, CRUDMixin):
    __tablename__ = "topicsread"

    user_id = db.Column(db.Integer, db.ForeignKey("users.id"),
                        primary_key=True)
    user = db.relationship('User', uselist=False, foreign_keys=[user_id])
    topic_id = db.Column(db.Integer,
                         db.ForeignKey("topics.id", use_alter=True,
                                       name="fk_tr_topic_id"),
                         primary_key=True)
    topic = db.relationship('Topic', uselist=False, foreign_keys=[topic_id])
    forum_id = db.Column(db.Integer,
                         db.ForeignKey("forums.id", use_alter=True,
                                       name="fk_tr_forum_id"),
                         primary_key=True)
    forum = db.relationship('Forum', uselist=False, foreign_keys=[forum_id])
    last_read = db.Column(UTCDateTime(timezone=True), default=time_utcnow,
                          nullable=False)
示例#17
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class TopicsRead(db.Model, CRUDMixin):
    __tablename__ = "topicsread"

    user_id = db.Column(db.Integer,
                        db.ForeignKey("users.id"),
                        primary_key=True)
    topic_id = db.Column(db.Integer,
                         db.ForeignKey("topics.id",
                                       use_alter=True,
                                       name="fk_tr_topic_id"),
                         primary_key=True)
    forum_id = db.Column(db.Integer,
                         db.ForeignKey("forums.id",
                                       use_alter=True,
                                       name="fk_tr_forum_id"),
                         primary_key=True)
    last_read = db.Column(UTCDateTime(timezone=True),
                          default=time_utcnow,
                          nullable=False)
示例#18
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class PostLike(db.Model):
    __tablename__ = 'vanity_association'

    post_id = db.Column(db.ForeignKey('posts.id'), primary_key=True)
    post = db.relationship(
        Post,
        backref=db.backref(
            "liked_by_users",
            lazy='joined',
            cascade='all, delete-orphan'
        )
    )
    user_id = db.Column(db.ForeignKey('users.id'), primary_key=True)
    user = db.relationship(
        User,
        uselist=False,
        #lazy='joined',  # see: https://github.com/flaskbb/flaskbb/issues/503#issuecomment-415713742
        backref=db.backref(
            "user_liked_posts",
            cascade="all, delete-orphan",
        ),
    )
示例#19
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文件: models.py 项目: vlttnv/flaskbb
class Message(db.Model):
    __tablename__ = "messages"

    id = db.Column(db.Integer, primary_key=True)
    conversation_id = db.Column(db.Integer,
                                db.ForeignKey("conversations.id"),
                                nullable=False)

    # the user who wrote the message
    user_id = db.Column(db.Integer, db.ForeignKey("users.id"), nullable=False)
    message = db.Column(db.Text, nullable=False)
    date_created = db.Column(db.DateTime, default=datetime.utcnow())

    user = db.relationship("User", lazy="joined")

    def save(self, conversation=None):
        """Saves a private message.

        :param conversation_id: The id of the conversation to which the message
                                belongs to.
        """
        if conversation is not None:
            self.conversation_id = conversation.id
            self.user_id = conversation.from_user_id
            self.date_created = datetime.utcnow()

        db.session.add(self)
        db.session.commit()
        return self

    def delete(self):
        """Deletes a private message"""

        db.session.delete(self)
        db.session.commit()
        return self
示例#20
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class HubLog(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    server_id = db.Column(String(50), nullable=False)
    datetime = db.Column(UTCDateTime(timezone=True),
                         default=time_utcnow,
                         nullable=False)
    user_id = db.Column(
        db.Integer,
        db.ForeignKey("users.id", ondelete="SET NULL"),
        nullable=True,
    )
    message = db.Column(db.Text, nullable=False)

    user = db.relationship("User", lazy="joined", foreign_keys=[user_id])

    def save(self):
        db.session.add(self)
        db.session.commit()
        return self
示例#21
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class Setting(db.Model):
    __tablename__ = "settings"

    key = db.Column(db.String, primary_key=True)
    _value = db.Column("value", db.String, nullable=False)
    settingsgroup = db.Column(db.String,
                              db.ForeignKey('settingsgroup.key',
                                            use_alter=True,
                                            name="fk_settingsgroup"),
                              nullable=False)

    # The name (displayed in the form)
    name = db.Column(db.String, nullable=False)

    # The description (displayed in the form)
    description = db.Column(db.String, nullable=False)

    # Available types: string, integer, boolean, array, float
    value_type = db.Column(db.String, nullable=False)

    # Available types: text, number, choice, yesno
    # They are used in the form creation process
    input_type = db.Column(db.String, nullable=False)

    # Extra attributes like, validation things (min, max length...)
    _extra = db.Column("extra", db.String)

    # Properties
    @property
    def value(self):
        return normalize_to(self._value, self.value_type)

    @value.setter
    def value(self, value):
        self._value = normalize_to(value, self.value_type, reverse=True)

    @property
    def extra(self):
        return pickle.loads(base64.decodestring(self._extra))

    @extra.setter
    def extra(self, extra):
        self._extra = base64.encodestring(
            pickle.dumps((extra), pickle.HIGHEST_PROTOCOL)
        )

    @classmethod
    def get_form(cls, group):
        """Returns a Form for all settings found in :class:`SettingsGroup`.

        :param group: The settingsgroup name. It is used to get the settings
                      which are in the specified group.
        """

        class SettingsForm(Form):
            pass

        # now parse that shit
        for setting in group.settings:
            field_validators = []

            # generate the validators
            # TODO: Do this in another function
            if "min" in setting.extra:
                # Min number validator
                if setting.value_type in ("integer", "float"):
                    field_validators.append(
                        validators.NumberRange(min=setting.extra["min"])
                    )

                # Min text length validator
                elif setting.value_type in ("string", "array"):
                    field_validators.append(
                        validators.Length(min=setting.extra["min"])
                    )

            if "max" in setting.extra:
                # Max number validator
                if setting.value_type in ("integer", "float"):
                    field_validators.append(
                        validators.NumberRange(max=setting.extra["max"])
                    )

                # Max text length validator
                elif setting.value_type in ("string", "array"):
                    field_validators.append(
                        validators.Length(max=setting.extra["max"])
                    )

            # Generate the fields based on input_type and value_type
            if setting.input_type == "number":
                # IntegerField
                if setting.value_type == "integer":
                    setattr(
                        SettingsForm, setting.key,
                        IntegerField(setting.name, validators=field_validators,
                                     description=setting.description)
                    )
                # FloatField
                elif setting.value_type == "float":
                    setattr(
                        SettingsForm, setting.key,
                        FloatField(setting.name, validators=field_validators,
                                   description=setting.description)
                    )

            # TextField
            if setting.input_type == "text":
                setattr(
                    SettingsForm, setting.key,
                    TextField(setting.name, validators=field_validators,
                              description=setting.description)
                )

            if setting.input_type == "array":
                setattr(
                    SettingsForm, setting.key,
                    TextField(setting.name, validators=field_validators,
                              description=setting.description)
                )

            # SelectField
            if setting.input_type == "choice" and "choices" in setting.extra:
                setattr(
                    SettingsForm, setting.key,
                    SelectField(setting.name, choices=setting.extra['choices'],
                                description=setting.description)
                )

            # BooleanField
            if setting.input_type == "yesno":
                setattr(
                    SettingsForm, setting.key,
                    BooleanField(setting.name, description=setting.description)
                )

        return SettingsForm

    @classmethod
    def get_all(cls):
        return cls.query.all()

    @classmethod
    def update(cls, settings, app=None):
        """Updates the current_app's config and stores the changes in the
        database.

        :param config: A dictionary with configuration items.
        """
        updated_settings = {}
        for key, value in settings.iteritems():
            setting = cls.query.filter(Setting.key == key.lower()).first()

            setting.value = value

            updated_settings[setting.key.upper()] = setting.value

            db.session.add(setting)
            db.session.commit()

        if app is not None:
            app.config.update(updated_settings)

    @classmethod
    def as_dict(cls, from_group=None, upper=False):
        """Returns the settings key and value as a dict.

        :param from_group: Returns only the settings from the group as a dict.
        :param upper: If upper is ``True``, the key will use upper-case
                      letters. Defaults to ``False``.
        """
        settings = {}
        result = None
        if from_group is not None:
            result = SettingsGroup.query.filter_by(key=from_group).\
                first_or_404()
            result = result.settings
        else:
            result = cls.query.all()

        for setting in result:
            if upper:
                settings[setting.key.upper()] = setting.value
            else:
                settings[setting.key] = setting.value

        return settings

    def save(self):
        """Saves a setting"""
        db.session.add(self)
        db.session.commit()

    def delete(self):
        """Deletes a setting"""
        db.session.delete(self)
        db.session.commit()
示例#22
0
class Forum(db.Model, CRUDMixin):
    __tablename__ = "forums"
    __searchable__ = ['title', 'description']

    id = db.Column(db.Integer, primary_key=True)
    category_id = db.Column(db.Integer,
                            db.ForeignKey("categories.id"),
                            nullable=False)
    title = db.Column(db.String(255), nullable=False)
    description = db.Column(db.Text)
    position = db.Column(db.Integer, default=1, nullable=False)
    locked = db.Column(db.Boolean, default=False, nullable=False)
    show_moderators = db.Column(db.Boolean, default=False, nullable=False)
    external = db.Column(db.String(200))

    post_count = db.Column(db.Integer, default=0, nullable=False)
    topic_count = db.Column(db.Integer, default=0, nullable=False)

    # One-to-one
    last_post_id = db.Column(db.Integer, db.ForeignKey("posts.id"))
    last_post = db.relationship("Post",
                                backref="last_post_forum",
                                uselist=False,
                                foreign_keys=[last_post_id])

    # Not nice, but needed to improve the performance
    last_post_title = db.Column(db.String(255))
    last_post_user_id = db.Column(db.Integer, db.ForeignKey("users.id"))
    last_post_username = db.Column(db.String(255))
    last_post_created = db.Column(UTCDateTime(timezone=True),
                                  default=time_utcnow)

    # One-to-many
    topics = db.relationship("Topic",
                             backref="forum",
                             lazy="dynamic",
                             cascade="all, delete-orphan")

    # Many-to-many
    moderators = db.relationship("User",
                                 secondary=moderators,
                                 primaryjoin=(moderators.c.forum_id == id),
                                 backref=db.backref("forummoderator",
                                                    lazy="dynamic"),
                                 lazy="joined")
    groups = db.relationship(
        "Group",
        secondary=forumgroups,
        primaryjoin=(forumgroups.c.forum_id == id),
        backref="forumgroups",
        lazy="joined",
    )

    # Properties
    @property
    def slug(self):
        """Returns a slugified version from the forum title"""
        return slugify(self.title)

    @property
    def url(self):
        """Returns the slugified url for the forum"""
        if self.external:
            return self.external
        return url_for("forum.view_forum", forum_id=self.id, slug=self.slug)

    @property
    def last_post_url(self):
        """Returns the url for the last post in the forum"""
        return url_for("forum.view_post", post_id=self.last_post_id)

    # Methods
    def __repr__(self):
        """Set to a unique key specific to the object in the database.
        Required for cache.memoize() to work across requests.
        """
        return "<{} {}>".format(self.__class__.__name__, self.id)

    def update_last_post(self):
        """Updates the last post in the forum."""
        last_post = Post.query.\
            filter(Post.topic_id == Topic.id,
                   Topic.forum_id == self.id).\
            order_by(Post.date_created.desc()).\
            first()

        # Last post is none when there are no topics in the forum
        if last_post is not None:

            # a new last post was found in the forum
            if not last_post.id == self.last_post_id:
                self.last_post_id = last_post.id
                self.last_post_title = last_post.topic.title
                self.last_post_user_id = last_post.user_id
                self.last_post_username = last_post.username
                self.last_post_created = last_post.date_created

        # No post found..
        else:
            self.last_post_id = None
            self.last_post_title = None
            self.last_post_user_id = None
            self.last_post_username = None
            self.last_post_created = None

        db.session.commit()

    def update_read(self, user, forumsread, topicsread):
        """Updates the ForumsRead status for the user. In order to work
        correctly, be sure that `topicsread is **not** `None`.

        :param user: The user for whom we should check if he has read the
                     forum.

        :param forumsread: The forumsread object. It is needed to check if
                           if the forum is unread. If `forumsread` is `None`
                           and the forum is unread, it will create a new entry
                           in the `ForumsRead` relation, else (and the forum
                           is still unread) we are just going to update the
                           entry in the `ForumsRead` relation.

        :param topicsread: The topicsread object is used in combination
                           with the forumsread object to check if the
                           forumsread relation should be updated and
                           therefore is unread.
        """
        if not user.is_authenticated or topicsread is None:
            return False

        read_cutoff = None
        if flaskbb_config['TRACKER_LENGTH'] > 0:
            read_cutoff = time_utcnow() - timedelta(
                days=flaskbb_config['TRACKER_LENGTH'])

        # fetch the unread posts in the forum
        unread_count = Topic.query.\
            outerjoin(TopicsRead,
                      db.and_(TopicsRead.topic_id == Topic.id,
                              TopicsRead.user_id == user.id)).\
            outerjoin(ForumsRead,
                      db.and_(ForumsRead.forum_id == Topic.forum_id,
                              ForumsRead.user_id == user.id)).\
            filter(Topic.forum_id == self.id,
                   Topic.last_updated > read_cutoff,
                   db.or_(TopicsRead.last_read == None,
                          TopicsRead.last_read < Topic.last_updated)).\
            count()

        # No unread topics available - trying to mark the forum as read
        if unread_count == 0:

            if forumsread and forumsread.last_read > topicsread.last_read:
                return False

            # ForumRead Entry exists - Updating it because a new topic/post
            # has been submitted and has read everything (obviously, else the
            # unread_count would be useless).
            elif forumsread:
                forumsread.last_read = time_utcnow()
                forumsread.save()
                return True

            # No ForumRead Entry existing - creating one.
            forumsread = ForumsRead()
            forumsread.user_id = user.id
            forumsread.forum_id = self.id
            forumsread.last_read = time_utcnow()
            forumsread.save()
            return True

        # Nothing updated, because there are still more than 0 unread
        # topicsread
        return False

    def recalculate(self, last_post=False):
        """Recalculates the post_count and topic_count in the forum.
        Returns the forum with the recounted stats.

        :param last_post: If set to ``True`` it will also try to update
                          the last post columns in the forum.
        """
        topic_count = Topic.query.filter_by(forum_id=self.id).count()
        post_count = Post.query.\
            filter(Post.topic_id == Topic.id,
                   Topic.forum_id == self.id).\
            count()
        self.topic_count = topic_count
        self.post_count = post_count

        if last_post:
            self.update_last_post()

        self.save()
        return self

    def save(self, groups=None):
        """Saves a forum

        :param moderators: If given, it will update the moderators in this
                           forum with the given iterable of user objects.
        :param groups: A list with group objects.
        """
        if self.id:
            db.session.merge(self)
        else:
            if groups is None:
                # importing here because of circular dependencies
                from flaskbb.user.models import Group
                self.groups = Group.query.order_by(Group.name.asc()).all()
            db.session.add(self)

        db.session.commit()
        return self

    def delete(self, users=None):
        """Deletes forum. If a list with involved user objects is passed,
        it will also update their post counts

        :param users: A list with user objects
        """
        # Delete the forum
        db.session.delete(self)
        db.session.commit()

        # Delete the entries for the forum in the ForumsRead and TopicsRead
        # relation
        ForumsRead.query.filter_by(forum_id=self.id).delete()
        TopicsRead.query.filter_by(forum_id=self.id).delete()

        # Update the users post count
        if users:
            users_list = []
            for user in users:
                user.post_count = Post.query.filter_by(user_id=user.id).count()
                users_list.append(user)
            db.session.add_all(users_list)
            db.session.commit()

        return self

    def move_topics_to(self, topics):
        """Moves a bunch a topics to the forum. Returns ``True`` if all
        topics were moved successfully to the forum.

        :param topics: A iterable with topic objects.
        """
        status = False
        for topic in topics:
            status = topic.move(self)
        return status

    # Classmethods
    @classmethod
    def get_forum(cls, forum_id, user):
        """Returns the forum and forumsread object as a tuple for the user.

        :param forum_id: The forum id
        :param user: The user object is needed to check if we also need their
                     forumsread object.
        """
        if user.is_authenticated:
            forum, forumsread = Forum.query.\
                filter(Forum.id == forum_id).\
                options(db.joinedload("category")).\
                outerjoin(ForumsRead,
                          db.and_(ForumsRead.forum_id == Forum.id,
                                  ForumsRead.user_id == user.id)).\
                add_entity(ForumsRead).\
                first_or_404()
        else:
            forum = Forum.query.filter(Forum.id == forum_id).first_or_404()
            forumsread = None

        return forum, forumsread

    @classmethod
    def get_topics(cls, forum_id, user, page=1, per_page=20):
        """Get the topics for the forum. If the user is logged in,
        it will perform an outerjoin for the topics with the topicsread and
        forumsread relation to check if it is read or unread.

        :param forum_id: The forum id
        :param user: The user object
        :param page: The page whom should be loaded
        :param per_page: How many topics per page should be shown
        """
        if user.is_authenticated:
            topics = Topic.query.filter_by(forum_id=forum_id).\
                outerjoin(TopicsRead,
                          db.and_(TopicsRead.topic_id == Topic.id,
                                  TopicsRead.user_id == user.id)).\
                add_entity(TopicsRead).\
                order_by(Topic.important.desc(), Topic.last_updated.desc()).\
                paginate(page, per_page, True)
        else:
            topics = Topic.query.filter_by(forum_id=forum_id).\
                order_by(Topic.important.desc(), Topic.last_updated.desc()).\
                paginate(page, per_page, True)

            topics.items = [(topic, None) for topic in topics.items]

        return topics
示例#23
0
class Topic(db.Model, CRUDMixin):
    __tablename__ = "topics"
    __searchable__ = ['title', 'username']

    id = db.Column(db.Integer, primary_key=True)
    forum_id = db.Column(db.Integer,
                         db.ForeignKey("forums.id",
                                       use_alter=True,
                                       name="fk_topic_forum_id"),
                         nullable=False)
    title = db.Column(db.String(255), nullable=False)
    user_id = db.Column(db.Integer, db.ForeignKey("users.id"))
    username = db.Column(db.String(200), nullable=False)
    date_created = db.Column(UTCDateTime(timezone=True), default=time_utcnow)
    last_updated = db.Column(UTCDateTime(timezone=True), default=time_utcnow)
    locked = db.Column(db.Boolean, default=False)
    important = db.Column(db.Boolean, default=False)
    views = db.Column(db.Integer, default=0)
    post_count = db.Column(db.Integer, default=0)

    # One-to-one (uselist=False) relationship between first_post and topic
    first_post_id = db.Column(db.Integer,
                              db.ForeignKey("posts.id", ondelete="CASCADE"))
    first_post = db.relationship("Post",
                                 backref="first_post",
                                 uselist=False,
                                 foreign_keys=[first_post_id])

    # One-to-one
    last_post_id = db.Column(db.Integer, db.ForeignKey("posts.id"))

    last_post = db.relationship("Post",
                                backref="last_post",
                                uselist=False,
                                foreign_keys=[last_post_id])

    # One-to-many
    posts = db.relationship("Post",
                            backref="topic",
                            lazy="dynamic",
                            primaryjoin="Post.topic_id == Topic.id",
                            cascade="all, delete-orphan",
                            post_update=True)

    # Properties
    @property
    def second_last_post(self):
        """Returns the second last post."""
        return self.posts[-2].id

    @property
    def slug(self):
        """Returns a slugified version from the topic title"""
        return slugify(self.title)

    @property
    def url(self):
        """Returns the slugified url for the topic"""
        return url_for("forum.view_topic", topic_id=self.id, slug=self.slug)

    # Methods
    def __init__(self, title=None):
        if title:
            self.title = title

    def __repr__(self):
        """
        Set to a unique key specific to the object in the database.
        Required for cache.memoize() to work across requests.
        """
        return "<{} {}>".format(self.__class__.__name__, self.id)

    @classmethod
    def get_topic(cls, topic_id, user):
        topic = Topic.query.filter_by(id=topic_id).first_or_404()
        return topic

    def tracker_needs_update(self, forumsread, topicsread):
        """Returns True if the topicsread tracker needs an update.
        Also, if the ``TRACKER_LENGTH`` is configured, it will just recognize
        topics that are newer than the ``TRACKER_LENGTH`` (in days) as unread.

        :param forumsread: The ForumsRead object is needed because we also
                           need to check if the forum has been cleared
                           sometime ago.
        :param topicsread: The topicsread object is used to check if there is
                           a new post in the topic.
        """
        read_cutoff = None
        if flaskbb_config['TRACKER_LENGTH'] > 0:
            read_cutoff = time_utcnow() - timedelta(
                days=flaskbb_config['TRACKER_LENGTH'])

        # The tracker is disabled - abort
        if read_cutoff is None:
            return False

        # Else the topic is still below the read_cutoff
        elif read_cutoff > self.last_post.date_created:
            return False

        # Can be None (cleared) if the user has never marked the forum as read.
        # If this condition is false - we need to update the tracker
        if forumsread and forumsread.cleared is not None and \
                forumsread.cleared >= self.last_post.date_created:
            return False

        if topicsread and topicsread.last_read >= self.last_post.date_created:
            return False

        return True

    def update_read(self, user, forum, forumsread):
        """Updates the topicsread and forumsread tracker for a specified user,
        if the topic contains new posts or the user hasn't read the topic.
        Returns True if the tracker has been updated.

        :param user: The user for whom the readstracker should be updated.
        :param forum: The forum in which the topic is.
        :param forumsread: The forumsread object. It is used to check if there
                           is a new post since the forum has been marked as
                           read.
        """
        # User is not logged in - abort
        if not user.is_authenticated:
            return False

        topicsread = TopicsRead.query.\
            filter(TopicsRead.user_id == user.id,
                   TopicsRead.topic_id == self.id).first()

        if not self.tracker_needs_update(forumsread, topicsread):
            return False

        # Because we return True/False if the trackers have been
        # updated, we need to store the status in a temporary variable
        updated = False

        # A new post has been submitted that the user hasn't read.
        # Updating...
        if topicsread:
            topicsread.last_read = time_utcnow()
            topicsread.save()
            updated = True

        # The user has not visited the topic before. Inserting him in
        # the TopicsRead model.
        elif not topicsread:
            topicsread = TopicsRead()
            topicsread.user_id = user.id
            topicsread.topic_id = self.id
            topicsread.forum_id = self.forum_id
            topicsread.last_read = time_utcnow()
            topicsread.save()
            updated = True

        # No unread posts
        else:
            updated = False

        # Save True/False if the forums tracker has been updated.
        updated = forum.update_read(user, forumsread, topicsread)

        return updated

    def recalculate(self):
        """Recalculates the post count in the topic."""
        post_count = Post.query.filter_by(topic_id=self.id).count()
        self.post_count = post_count
        self.save()
        return self

    def move(self, new_forum):
        """Moves a topic to the given forum.
        Returns True if it could successfully move the topic to forum.

        :param new_forum: The new forum for the topic
        """

        # if the target forum is the current forum, abort
        if self.forum_id == new_forum.id:
            return False

        old_forum = self.forum
        self.forum.post_count -= self.post_count
        self.forum.topic_count -= 1
        self.forum_id = new_forum.id

        new_forum.post_count += self.post_count
        new_forum.topic_count += 1

        db.session.commit()

        new_forum.update_last_post()
        old_forum.update_last_post()

        TopicsRead.query.filter_by(topic_id=self.id).delete()

        return True

    def save(self, user=None, forum=None, post=None):
        """Saves a topic and returns the topic object. If no parameters are
        given, it will only update the topic.

        :param user: The user who has created the topic
        :param forum: The forum where the topic is stored
        :param post: The post object which is connected to the topic
        """

        # Updates the topic
        if self.id:
            db.session.add(self)
            db.session.commit()
            return self

        # Set the forum and user id
        self.forum_id = forum.id
        self.user_id = user.id
        self.username = user.username

        # Set the last_updated time. Needed for the readstracker
        self.last_updated = time_utcnow()

        self.date_created = time_utcnow()

        # Insert and commit the topic
        db.session.add(self)
        db.session.commit()

        # Create the topic post
        post.save(user, self)

        # Update the first post id
        self.first_post_id = post.id

        # Update the topic count
        forum.topic_count += 1
        db.session.commit()

        return self

    def delete(self, users=None):
        """Deletes a topic with the corresponding posts. If a list with
        user objects is passed it will also update their post counts

        :param users: A list with user objects
        """
        # Grab the second last topic in the forum + parents/childs
        topic = Topic.query.\
            filter_by(forum_id=self.forum_id).\
            order_by(Topic.last_post_id.desc()).limit(2).offset(0).all()

        # do we want to delete the topic with the last post in the forum?
        if topic and topic[0].id == self.id:
            try:
                # Now the second last post will be the last post
                self.forum.last_post_id = topic[1].last_post_id
                self.forum.last_post_title = topic[1].title
                self.forum.last_post_user_id = topic[1].user_id
                self.forum.last_post_username = topic[1].username
                self.forum.last_post_created = topic[1].last_updated
            # Catch an IndexError when you delete the last topic in the forum
            # There is no second last post
            except IndexError:
                self.forum.last_post_id = None
                self.forum.last_post_title = None
                self.forum.last_post_user_id = None
                self.forum.last_post_username = None
                self.forum.last_post_created = None

            # Commit the changes
            db.session.commit()

        # These things needs to be stored in a variable before they are deleted
        forum = self.forum

        TopicsRead.query.filter_by(topic_id=self.id).delete()

        # Delete the topic
        db.session.delete(self)
        db.session.commit()

        # Update the post counts
        if users:
            for user in users:
                user.post_count = Post.query.filter_by(user_id=user.id).count()
                db.session.commit()

        forum.topic_count = Topic.query.\
            filter_by(forum_id=self.forum_id).\
            count()

        forum.post_count = Post.query.\
            filter(Post.topic_id == Topic.id,
                   Topic.forum_id == self.forum_id).\
            count()

        db.session.commit()
        return self
示例#24
0
class Post(db.Model, CRUDMixin):
    __tablename__ = "posts"
    __searchable__ = ['content', 'username']

    id = db.Column(db.Integer, primary_key=True)
    topic_id = db.Column(
        db.Integer,
        db.ForeignKey("topics.id",
                      use_alter=True,
                      name="fk_post_topic_id",
                      ondelete="CASCADE"))
    user_id = db.Column(db.Integer, db.ForeignKey("users.id"), nullable=True)
    username = db.Column(db.String(200), nullable=False)
    content = db.Column(db.Text, nullable=False)
    date_created = db.Column(UTCDateTime(timezone=True), default=time_utcnow)
    date_modified = db.Column(UTCDateTime(timezone=True))
    modified_by = db.Column(db.String(200))

    # Properties
    @property
    def url(self):
        """Returns the url for the post"""
        return url_for("forum.view_post", post_id=self.id)

    # Methods
    def __init__(self, content=None):
        if content:
            self.content = content

    def __repr__(self):
        """
        Set to a unique key specific to the object in the database.
        Required for cache.memoize() to work across requests.
        """
        return "<{} {}>".format(self.__class__.__name__, self.id)

    def save(self, user=None, topic=None):
        """Saves a new post. If no parameters are passed we assume that
        you will just update an existing post. It returns the object after the
        operation was successful.

        :param user: The user who has created the post
        :param topic: The topic in which the post was created
        """
        # update/edit the post
        if self.id:
            db.session.add(self)
            db.session.commit()
            return self

        # Adding a new post
        if user and topic:
            created = time_utcnow()
            self.user_id = user.id
            self.username = user.username
            self.topic_id = topic.id
            self.date_created = created

            topic.last_updated = created

            # This needs to be done before the last_post_id gets updated.
            db.session.add(self)
            db.session.commit()

            # Now lets update the last post id
            topic.last_post_id = self.id

            # Update the last post info for the forum
            topic.forum.last_post_id = self.id
            topic.forum.last_post_title = topic.title
            topic.forum.last_post_user_id = user.id
            topic.forum.last_post_username = user.username
            topic.forum.last_post_created = created

            # Update the post counts
            user.post_count += 1
            topic.post_count += 1
            topic.forum.post_count += 1

            # And commit it!
            db.session.add(topic)
            db.session.commit()
            return self

    def delete(self):
        """Deletes a post and returns self."""
        # This will delete the whole topic
        if self.topic.first_post_id == self.id:
            self.topic.delete()
            return self

        # Delete the last post
        if self.topic.last_post_id == self.id:

            # update the last post in the forum
            if self.topic.last_post_id == self.topic.forum.last_post_id:
                # We need the second last post in the forum here,
                # because the last post will be deleted
                second_last_post = Post.query.\
                    filter(Post.topic_id == Topic.id,
                           Topic.forum_id == self.topic.forum.id).\
                    order_by(Post.id.desc()).limit(2).offset(0).\
                    all()

                second_last_post = second_last_post[1]

                self.topic.forum.last_post_id = second_last_post.id

            # check if there is a second last post, else it is the first post
            if self.topic.second_last_post:
                # Now the second last post will be the last post
                self.topic.last_post_id = self.topic.second_last_post

            # there is no second last post, now the last post is also the
            # first post
            else:
                self.topic.last_post_id = self.topic.first_post_id

        # Update the post counts
        self.user.post_count -= 1
        self.topic.post_count -= 1
        self.topic.forum.post_count -= 1
        db.session.commit()

        db.session.delete(self)
        db.session.commit()
        return self
示例#25
0
from datetime import timedelta

from flask import url_for, abort
from sqlalchemy.orm import aliased

from flaskbb.extensions import db
from flaskbb.utils.helpers import (slugify, get_categories_and_forums,
                                   get_forums, time_utcnow)
from flaskbb.utils.database import CRUDMixin, UTCDateTime
from flaskbb.utils.settings import flaskbb_config

moderators = db.Table(
    'moderators',
    db.Column('user_id',
              db.Integer(),
              db.ForeignKey('users.id'),
              nullable=False),
    db.Column('forum_id',
              db.Integer(),
              db.ForeignKey('forums.id', use_alter=True, name="fk_forum_id"),
              nullable=False))

topictracker = db.Table(
    'topictracker',
    db.Column('user_id',
              db.Integer(),
              db.ForeignKey('users.id'),
              nullable=False),
    db.Column('topic_id',
              db.Integer(),
              db.ForeignKey('topics.id',
示例#26
0
文件: models.py 项目: jslink/flaskbb
class User(db.Model, UserMixin, CRUDMixin):
    __tablename__ = "users"
    __searchable__ = ['username', 'email']

    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(200), unique=True, nullable=False)
    email = db.Column(db.String(200), unique=True, nullable=False)
    _password = db.Column('password', db.String(120), nullable=False)
    date_joined = db.Column(db.DateTime, default=datetime.utcnow())
    lastseen = db.Column(db.DateTime, default=datetime.utcnow())
    birthday = db.Column(db.DateTime)
    gender = db.Column(db.String(10))
    website = db.Column(db.String(200))
    location = db.Column(db.String(100))
    signature = db.Column(db.Text)
    avatar = db.Column(db.String(200))
    notes = db.Column(db.Text)

    last_failed_login = db.Column(db.DateTime)
    login_attempts = db.Column(db.Integer, default=0)
    activated = db.Column(db.Boolean, default=False)

    theme = db.Column(db.String(15))
    language = db.Column(db.String(15), default="en")

    posts = db.relationship("Post", backref="user", lazy="dynamic")
    topics = db.relationship("Topic", backref="user", lazy="dynamic")

    post_count = db.Column(db.Integer, default=0)

    primary_group_id = db.Column(db.Integer,
                                 db.ForeignKey('groups.id'),
                                 nullable=False)

    primary_group = db.relationship('Group',
                                    lazy="joined",
                                    backref="user_group",
                                    uselist=False,
                                    foreign_keys=[primary_group_id])

    secondary_groups = \
        db.relationship('Group',
                        secondary=groups_users,
                        primaryjoin=(groups_users.c.user_id == id),
                        backref=db.backref('users', lazy='dynamic'),
                        lazy='dynamic')

    tracked_topics = \
        db.relationship("Topic", secondary=topictracker,
                        primaryjoin=(topictracker.c.user_id == id),
                        backref=db.backref("topicstracked", lazy="dynamic"),
                        lazy="dynamic")

    # Properties
    @property
    def is_active(self):
        """Returns the state of the account.
        If the ``ACTIVATE_ACCOUNT`` option has been disabled, it will always
        return ``True``. Is the option activated, it will, depending on the
        state of the account, either return ``True`` or ``False``.
        """
        if flaskbb_config["ACTIVATE_ACCOUNT"]:
            if self.activated:
                return True
            return False

        return True

    @property
    def last_post(self):
        """Returns the latest post from the user."""

        return Post.query.filter(Post.user_id == self.id).\
            order_by(Post.date_created.desc()).first()

    @property
    def url(self):
        """Returns the url for the user."""
        return url_for("user.profile", username=self.username)

    @property
    def permissions(self):
        """Returns the permissions for the user."""
        return self.get_permissions()

    @property
    def groups(self):
        """Returns the user groups."""
        return self.get_groups()

    @property
    def unread_messages(self):
        """Returns the unread messages for the user."""
        return self.get_unread_messages()

    @property
    def unread_count(self):
        """Returns the unread message count for the user."""
        return len(self.unread_messages)

    @property
    def days_registered(self):
        """Returns the amount of days the user is registered."""
        days_registered = (datetime.utcnow() - self.date_joined).days
        if not days_registered:
            return 1
        return days_registered

    @property
    def topic_count(self):
        """Returns the thread count."""
        return Topic.query.filter(Topic.user_id == self.id).count()

    @property
    def posts_per_day(self):
        """Returns the posts per day count."""
        return round((float(self.post_count) / float(self.days_registered)), 1)

    @property
    def topics_per_day(self):
        """Returns the topics per day count."""
        return round((float(self.topic_count) / float(self.days_registered)),
                     1)

    # Methods
    def __repr__(self):
        """Set to a unique key specific to the object in the database.
        Required for cache.memoize() to work across requests.
        """
        return "<{} {}>".format(self.__class__.__name__, self.username)

    def _get_password(self):
        """Returns the hashed password."""
        return self._password

    def _set_password(self, password):
        """Generates a password hash for the provided password."""
        if not password:
            return
        self._password = generate_password_hash(password)

    # Hide password encryption by exposing password field only.
    password = db.synonym('_password',
                          descriptor=property(_get_password, _set_password))

    def check_password(self, password):
        """Check passwords. If passwords match it returns true, else false."""

        if self.password is None:
            return False
        return check_password_hash(self.password, password)

    @classmethod
    def authenticate(cls, login, password):
        """A classmethod for authenticating users.
        It returns the user object if the user/password combination is ok.
        If the user has entered too often a wrong password, he will be locked
        out of his account for a specified time.

        :param login: This can be either a username or a email address.
        :param password: The password that is connected to username and email.
        """
        user = cls.query.filter(
            db.or_(User.username == login, User.email == login)).first()

        if user:
            if user.check_password(password):
                # reset them after a successful login attempt
                user.login_attempts = 0
                user.save()
                return user

            # user exists, wrong password
            user.login_attempts += 1
            user.last_failed_login = datetime.utcnow()
            user.save()

        # protection against account enumeration timing attacks
        dummy_password = os.urandom(15).encode("base-64")
        check_password_hash(dummy_password, password)

        raise AuthenticationError

    def recalculate(self):
        """Recalculates the post count from the user."""
        post_count = Post.query.filter_by(user_id=self.id).count()
        self.post_count = post_count
        self.save()
        return self

    def all_topics(self, page):
        """Returns a paginated result with all topics the user has created."""

        return Topic.query.filter(Topic.user_id == self.id).\
            filter(Post.topic_id == Topic.id).\
            order_by(Post.id.desc()).\
            paginate(page, flaskbb_config['TOPICS_PER_PAGE'], False)

    def all_posts(self, page):
        """Returns a paginated result with all posts the user has created."""

        return Post.query.filter(Post.user_id == self.id).\
            paginate(page, flaskbb_config['TOPICS_PER_PAGE'], False)

    def track_topic(self, topic):
        """Tracks the specified topic.

        :param topic: The topic which should be added to the topic tracker.
        """

        if not self.is_tracking_topic(topic):
            self.tracked_topics.append(topic)
            return self

    def untrack_topic(self, topic):
        """Untracks the specified topic.

        :param topic: The topic which should be removed from the
                      topic tracker.
        """

        if self.is_tracking_topic(topic):
            self.tracked_topics.remove(topic)
            return self

    def is_tracking_topic(self, topic):
        """Checks if the user is already tracking this topic.

        :param topic: The topic which should be checked.
        """

        return self.tracked_topics.filter(
            topictracker.c.topic_id == topic.id).count() > 0

    def add_to_group(self, group):
        """Adds the user to the `group` if he isn't in it.

        :param group: The group which should be added to the user.
        """

        if not self.in_group(group):
            self.secondary_groups.append(group)
            return self

    def remove_from_group(self, group):
        """Removes the user from the `group` if he is in it.

        :param group: The group which should be removed from the user.
        """

        if self.in_group(group):
            self.secondary_groups.remove(group)
            return self

    def in_group(self, group):
        """Returns True if the user is in the specified group.

        :param group: The group which should be checked.
        """

        return self.secondary_groups.filter(
            groups_users.c.group_id == group.id).count() > 0

    @cache.memoize(timeout=max_integer)
    def get_groups(self):
        """Returns all the groups the user is in."""
        return [self.primary_group] + list(self.secondary_groups)

    @cache.memoize(timeout=max_integer)
    def get_permissions(self, exclude=None):
        """Returns a dictionary with all permissions the user has"""
        if exclude:
            exclude = set(exclude)
        else:
            exclude = set()
        exclude.update(['id', 'name', 'description'])

        perms = {}
        # Get the Guest group
        for group in self.groups:
            columns = set(group.__table__.columns.keys()) - set(exclude)
            for c in columns:
                perms[c] = getattr(group, c) or perms.get(c, False)
        return perms

    @cache.memoize(timeout=max_integer)
    def get_unread_messages(self):
        """Returns all unread messages for the user."""
        unread_messages = Conversation.query.\
            filter(Conversation.unread, Conversation.user_id == self.id).all()
        return unread_messages

    def invalidate_cache(self, permissions=True, messages=True):
        """Invalidates this objects cached metadata.

        :param permissions_only: If set to ``True`` it will only invalidate
                                 the permissions cache. Otherwise it will
                                 also invalidate the user's unread message
                                 cache.
        """
        if messages:
            cache.delete_memoized(self.get_unread_messages, self)

        if permissions:
            cache.delete_memoized(self.get_permissions, self)
            cache.delete_memoized(self.get_groups, self)

    def ban(self):
        """Bans the user. Returns True upon success."""

        if not self.get_permissions()['banned']:
            banned_group = Group.query.filter(Group.banned == True).first()

            self.primary_group_id = banned_group.id
            self.save()
            self.invalidate_cache()
            return True
        return False

    def unban(self):
        """Unbans the user. Returns True upon success."""

        if self.get_permissions()['banned']:
            member_group = Group.query.filter(Group.admin == False,
                                              Group.super_mod == False,
                                              Group.mod == False,
                                              Group.guest == False,
                                              Group.banned == False).first()

            self.primary_group_id = member_group.id
            self.save()
            self.invalidate_cache()
            return True
        return False

    def save(self, groups=None):
        """Saves a user. If a list with groups is provided, it will add those
        to the secondary groups from the user.

        :param groups: A list with groups that should be added to the
                       secondary groups from user.
        """

        if groups is not None:
            # TODO: Only remove/add groups that are selected
            secondary_groups = self.secondary_groups.all()
            for group in secondary_groups:
                self.remove_from_group(group)
            db.session.commit()

            for group in groups:
                # Do not add the primary group to the secondary groups
                if group.id == self.primary_group_id:
                    continue
                self.add_to_group(group)

            self.invalidate_cache()

        db.session.add(self)
        db.session.commit()
        return self

    def delete(self):
        """Deletes the User."""

        # This isn't done automatically...
        Conversation.query.filter_by(user_id=self.id).delete()
        ForumsRead.query.filter_by(user_id=self.id).delete()
        TopicsRead.query.filter_by(user_id=self.id).delete()

        # This should actually be handeld by the dbms.. but dunno why it doesnt
        # work here
        from flaskbb.forum.models import Forum

        last_post_forums = Forum.query.\
            filter_by(last_post_user_id=self.id).all()

        for forum in last_post_forums:
            forum.last_post_user_id = None
            forum.save()

        db.session.delete(self)
        db.session.commit()

        return self
示例#27
0
文件: models.py 项目: jslink/flaskbb
from werkzeug.security import generate_password_hash, check_password_hash
from flask import url_for
from flask_login import UserMixin, AnonymousUserMixin

from flaskbb._compat import max_integer
from flaskbb.extensions import db, cache
from flaskbb.exceptions import AuthenticationError
from flaskbb.utils.settings import flaskbb_config
from flaskbb.utils.database import CRUDMixin
from flaskbb.forum.models import (Post, Topic, topictracker, TopicsRead,
                                  ForumsRead)
from flaskbb.message.models import Conversation

groups_users = db.Table(
    'groups_users',
    db.Column('user_id', db.Integer(), db.ForeignKey('users.id')),
    db.Column('group_id', db.Integer(), db.ForeignKey('groups.id')))


class Group(db.Model, CRUDMixin):
    __tablename__ = "groups"

    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(255), unique=True, nullable=False)
    description = db.Column(db.Text)

    # Group types
    admin = db.Column(db.Boolean, default=False, nullable=False)
    super_mod = db.Column(db.Boolean, default=False, nullable=False)
    mod = db.Column(db.Boolean, default=False, nullable=False)
    guest = db.Column(db.Boolean, default=False, nullable=False)
示例#28
0
文件: models.py 项目: flaskbb/flaskbb
class User(db.Model, UserMixin, CRUDMixin):
    __tablename__ = "users"

    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(200), unique=True, nullable=False)
    email = db.Column(db.String(200), unique=True, nullable=False)
    _password = db.Column('password', db.String(120), nullable=False)
    date_joined = db.Column(UTCDateTime(timezone=True),
                            default=time_utcnow,
                            nullable=False)
    lastseen = db.Column(UTCDateTime(timezone=True),
                         default=time_utcnow,
                         nullable=True)
    birthday = db.Column(db.DateTime, nullable=True)
    gender = db.Column(db.String(10), nullable=True)
    website = db.Column(db.String(200), nullable=True)
    location = db.Column(db.String(100), nullable=True)
    signature = db.Column(db.Text, nullable=True)
    avatar = db.Column(db.String(200), nullable=True)
    notes = db.Column(db.Text, nullable=True)

    last_failed_login = db.Column(UTCDateTime(timezone=True), nullable=True)
    login_attempts = db.Column(db.Integer, default=0, nullable=False)
    activated = db.Column(db.Boolean, default=False, nullable=False)

    theme = db.Column(db.String(15), nullable=True)
    language = db.Column(db.String(15), default="en", nullable=True)

    post_count = db.Column(db.Integer, default=0)

    primary_group_id = db.Column(db.Integer,
                                 db.ForeignKey('groups.id'),
                                 nullable=False)

    posts = db.relationship("Post",
                            backref="user",
                            primaryjoin="User.id == Post.user_id",
                            lazy="dynamic")

    topics = db.relationship("Topic",
                             backref="user",
                             primaryjoin="User.id == Topic.user_id",
                             lazy="dynamic")

    primary_group = db.relationship("Group",
                                    backref="user_group",
                                    uselist=False,
                                    lazy="joined",
                                    foreign_keys=[primary_group_id])

    secondary_groups = db.relationship(
        "Group",
        secondary=groups_users,
        primaryjoin=(groups_users.c.user_id == id),
        backref=db.backref("users", lazy="dynamic"),
        lazy="dynamic")

    tracked_topics = db.relationship(
        "Topic",
        secondary=topictracker,
        primaryjoin=(topictracker.c.user_id == id),
        backref=db.backref("topicstracked", lazy="dynamic"),
        lazy="dynamic",
        single_parent=True)

    # Properties
    @property
    def is_active(self):
        """Returns the state of the account.
        If the ``ACTIVATE_ACCOUNT`` option has been disabled, it will always
        return ``True``. Is the option activated, it will, depending on the
        state of the account, either return ``True`` or ``False``.
        """
        if flaskbb_config["ACTIVATE_ACCOUNT"]:
            if self.activated:
                return True
            return False

        return True

    @property
    def last_post(self):
        """Returns the latest post from the user."""
        return Post.query.filter(Post.user_id == self.id).\
            order_by(Post.date_created.desc()).first()

    @property
    def url(self):
        """Returns the url for the user."""
        return url_for("user.profile", username=self.username)

    @property
    def permissions(self):
        """Returns the permissions for the user."""
        return self.get_permissions()

    @property
    def groups(self):
        """Returns the user groups."""
        return self.get_groups()

    @property
    def days_registered(self):
        """Returns the amount of days the user is registered."""
        days_registered = (time_utcnow() - self.date_joined).days
        if not days_registered:
            return 1
        return days_registered

    @property
    def topic_count(self):
        """Returns the thread count."""
        return Topic.query.filter(Topic.user_id == self.id).count()

    @property
    def posts_per_day(self):
        """Returns the posts per day count."""
        return round((float(self.post_count) / float(self.days_registered)), 1)

    @property
    def topics_per_day(self):
        """Returns the topics per day count."""
        return round((float(self.topic_count) / float(self.days_registered)),
                     1)

    # Methods
    def __repr__(self):
        """Set to a unique key specific to the object in the database.
        Required for cache.memoize() to work across requests.
        """
        return "<{} {}>".format(self.__class__.__name__, self.username)

    def _get_password(self):
        """Returns the hashed password."""
        return self._password

    def _set_password(self, password):
        """Generates a password hash for the provided password."""
        if not password:
            return
        self._password = generate_password_hash(password)

    # Hide password encryption by exposing password field only.
    password = db.synonym('_password',
                          descriptor=property(_get_password, _set_password))

    def check_password(self, password):
        """Check passwords. If passwords match it returns true, else false."""

        if self.password is None:
            return False
        return check_password_hash(self.password, password)

    @classmethod
    @deprecated("Use authentication services instead.")
    def authenticate(cls, login, password):
        """A classmethod for authenticating users.
        It returns the user object if the user/password combination is ok.
        If the user has entered too often a wrong password, he will be locked
        out of his account for a specified time.

        :param login: This can be either a username or a email address.
        :param password: The password that is connected to username and email.
        """
        user = cls.query.filter(
            db.or_(User.username == login, User.email == login)).first()

        if user is not None:
            if user.check_password(password):
                # reset them after a successful login attempt
                user.login_attempts = 0
                user.save()
                return user

            # user exists, wrong password
            # never had a bad login before
            if user.login_attempts is None:
                user.login_attempts = 1
            else:
                user.login_attempts += 1
            user.last_failed_login = time_utcnow()
            user.save()

        # protection against account enumeration timing attacks
        check_password_hash("dummy password", password)

        raise AuthenticationError

    def recalculate(self):
        """Recalculates the post count from the user."""
        self.post_count = Post.query.filter_by(user_id=self.id).count()
        self.save()
        return self

    def all_topics(self, page, viewer):
        """Topics made by a given user, most recent first.

        :param page: The page which should be displayed.
        :param viewer: The user who is viewing the page. Only posts
                       accessible to the viewer will be returned.
        :rtype: flask_sqlalchemy.Pagination
        """
        group_ids = [g.id for g in viewer.groups]
        topics = Topic.query.\
            filter(Topic.user_id == self.id,
                   Forum.id == Topic.forum_id,
                   Forum.groups.any(Group.id.in_(group_ids))).\
            order_by(Topic.id.desc()).\
            paginate(page, flaskbb_config['TOPICS_PER_PAGE'], False)
        return topics

    def all_posts(self, page, viewer):
        """Posts made by a given user, most recent first.

        :param page: The page which should be displayed.
        :param viewer: The user who is viewing the page. Only posts
                       accessible to the viewer will be returned.
        :rtype: flask_sqlalchemy.Pagination
        """
        group_ids = [g.id for g in viewer.groups]
        posts = Post.query.\
            filter(Post.user_id == self.id,
                   Post.topic_id == Topic.id,
                   Topic.forum_id == Forum.id,
                   Forum.groups.any(Group.id.in_(group_ids))).\
            order_by(Post.id.desc()).\
            paginate(page, flaskbb_config['TOPICS_PER_PAGE'], False)
        return posts

    def track_topic(self, topic):
        """Tracks the specified topic.

        :param topic: The topic which should be added to the topic tracker.
        """
        if not self.is_tracking_topic(topic):
            self.tracked_topics.append(topic)
            return self

    def untrack_topic(self, topic):
        """Untracks the specified topic.

        :param topic: The topic which should be removed from the
                      topic tracker.
        """
        if self.is_tracking_topic(topic):
            self.tracked_topics.remove(topic)
            return self

    def is_tracking_topic(self, topic):
        """Checks if the user is already tracking this topic.

        :param topic: The topic which should be checked.
        """
        return self.tracked_topics.filter(
            topictracker.c.topic_id == topic.id).count() > 0

    def add_to_group(self, group):
        """Adds the user to the `group` if he isn't in it.

        :param group: The group which should be added to the user.
        """
        if not self.in_group(group):
            self.secondary_groups.append(group)
            return self

    def remove_from_group(self, group):
        """Removes the user from the `group` if he is in it.

        :param group: The group which should be removed from the user.
        """
        if self.in_group(group):
            self.secondary_groups.remove(group)
            return self

    def in_group(self, group):
        """Returns True if the user is in the specified group.

        :param group: The group which should be checked.
        """
        return self.secondary_groups.filter(
            groups_users.c.group_id == group.id).count() > 0

    @cache.memoize()
    def get_groups(self):
        """Returns all the groups the user is in."""
        return [self.primary_group] + list(self.secondary_groups)

    @cache.memoize()
    def get_permissions(self, exclude=None):
        """Returns a dictionary with all permissions the user has"""
        if exclude:
            exclude = set(exclude)
        else:
            exclude = set()
        exclude.update(['id', 'name', 'description'])

        perms = {}
        # Get the Guest group
        for group in self.groups:
            columns = set(group.__table__.columns.keys()) - set(exclude)
            for c in columns:
                perms[c] = getattr(group, c) or perms.get(c, False)
        return perms

    def invalidate_cache(self):
        """Invalidates this objects cached metadata."""
        cache.delete_memoized(self.get_permissions, self)
        cache.delete_memoized(self.get_groups, self)

    def ban(self):
        """Bans the user. Returns True upon success."""
        if not self.get_permissions()['banned']:
            banned_group = Group.query.filter(Group.banned == True).first()

            self.primary_group = banned_group
            self.save()
            self.invalidate_cache()
            return True
        return False

    def unban(self):
        """Unbans the user. Returns True upon success."""
        if self.get_permissions()['banned']:
            member_group = Group.query.filter(Group.admin == False,
                                              Group.super_mod == False,
                                              Group.mod == False,
                                              Group.guest == False,
                                              Group.banned == False).first()

            self.primary_group = member_group
            self.save()
            self.invalidate_cache()
            return True
        return False

    def save(self, groups=None):
        """Saves a user. If a list with groups is provided, it will add those
        to the secondary groups from the user.

        :param groups: A list with groups that should be added to the
                       secondary groups from user.
        """
        if groups is not None:
            # TODO: Only remove/add groups that are selected
            with db.session.no_autoflush:
                secondary_groups = self.secondary_groups.all()
                for group in secondary_groups:
                    self.remove_from_group(group)

            for group in groups:
                # Do not add the primary group to the secondary groups
                if group == self.primary_group:
                    continue
                self.add_to_group(group)

            self.invalidate_cache()

        db.session.add(self)
        db.session.commit()
        return self

    def delete(self):
        """Deletes the User."""
        db.session.delete(self)
        db.session.commit()

        return self
示例#29
0
文件: models.py 项目: flaskbb/flaskbb
from flaskbb.deprecation import deprecated
from flaskbb.exceptions import AuthenticationError
from flaskbb.extensions import cache, db
from flaskbb.forum.models import Forum, Post, Topic, topictracker
from flaskbb.utils.database import CRUDMixin, UTCDateTime, make_comparable
from flaskbb.utils.helpers import time_utcnow
from flaskbb.utils.settings import flaskbb_config

logger = logging.getLogger(__name__)

groups_users = db.Table(
    'groups_users',
    db.Column('user_id',
              db.Integer,
              db.ForeignKey('users.id', ondelete="CASCADE"),
              nullable=False),
    db.Column('group_id',
              db.Integer,
              db.ForeignKey('groups.id', ondelete="CASCADE"),
              nullable=False))


@make_comparable
class Group(db.Model, CRUDMixin):
    __tablename__ = "groups"

    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(255), unique=True, nullable=False)
    description = db.Column(db.Text, nullable=True)
示例#30
0
class User(db.Model, UserMixin, CRUDMixin):
    __tablename__ = "users"
    __searchable__ = ['username', 'email']

    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(200), unique=True, nullable=False)
    email = db.Column(db.String(200), unique=True, nullable=False)
    _password = db.Column('password', db.String(120), nullable=False)
    date_joined = db.Column(db.DateTime, default=datetime.utcnow())
    lastseen = db.Column(db.DateTime, default=datetime.utcnow())
    birthday = db.Column(db.DateTime)
    gender = db.Column(db.String(10))
    website = db.Column(db.String(200))
    location = db.Column(db.String(100))
    signature = db.Column(db.Text)
    avatar = db.Column(db.String(200))
    notes = db.Column(db.Text)

    theme = db.Column(db.String(15))
    language = db.Column(db.String(15), default="en")

    posts = db.relationship("Post", backref="user", lazy="dynamic")
    topics = db.relationship("Topic", backref="user", lazy="dynamic")

    post_count = db.Column(db.Integer, default=0)

    primary_group_id = db.Column(db.Integer,
                                 db.ForeignKey('groups.id'),
                                 nullable=False)

    primary_group = db.relationship('Group',
                                    lazy="joined",
                                    backref="user_group",
                                    uselist=False,
                                    foreign_keys=[primary_group_id])

    secondary_groups = \
        db.relationship('Group',
                        secondary=groups_users,
                        primaryjoin=(groups_users.c.user_id == id),
                        backref=db.backref('users', lazy='dynamic'),
                        lazy='dynamic')

    tracked_topics = \
        db.relationship("Topic", secondary=topictracker,
                        primaryjoin=(topictracker.c.user_id == id),
                        backref=db.backref("topicstracked", lazy="dynamic"),
                        lazy="dynamic")

    # Properties
    @property
    def last_post(self):
        """Returns the latest post from the user"""

        return Post.query.filter(Post.user_id == self.id).\
            order_by(Post.date_created.desc()).first()

    @property
    def url(self):
        """Returns the url for the user"""
        return url_for("user.profile", username=self.username)

    @property
    def permissions(self):
        """Returns the permissions for the user"""
        return self.get_permissions()

    @property
    def groups(self):
        """Returns user groups"""
        return self.get_groups()

    @property
    def days_registered(self):
        """Returns the amount of days the user is registered."""
        days_registered = (datetime.utcnow() - self.date_joined).days
        if not days_registered:
            return 1
        return days_registered

    @property
    def topic_count(self):
        """Returns the thread count"""
        return Topic.query.filter(Topic.user_id == self.id).count()

    @property
    def posts_per_day(self):
        """Returns the posts per day count"""
        return round((float(self.post_count) / float(self.days_registered)), 1)

    @property
    def topics_per_day(self):
        """Returns the topics per day count"""
        return round((float(self.topic_count) / float(self.days_registered)),
                     1)

    # Methods
    def __repr__(self):
        """Set to a unique key specific to the object in the database.
        Required for cache.memoize() to work across requests.
        """
        return "<{} {}>".format(self.__class__.__name__, self.username)

    def _get_password(self):
        """Returns the hashed password"""
        return self._password

    def _set_password(self, password):
        """Generates a password hash for the provided password"""
        self._password = generate_password_hash(password)

    # Hide password encryption by exposing password field only.
    password = db.synonym('_password',
                          descriptor=property(_get_password, _set_password))

    def check_password(self, password):
        """Check passwords. If passwords match it returns true, else false"""

        if self.password is None:
            return False
        return check_password_hash(self.password, password)

    @classmethod
    def authenticate(cls, login, password):
        """A classmethod for authenticating users
        It returns true if the user exists and has entered a correct password

        :param login: This can be either a username or a email address.

        :param password: The password that is connected to username and email.
        """

        user = cls.query.filter(
            db.or_(User.username == login, User.email == login)).first()

        if user:
            authenticated = user.check_password(password)
        else:
            authenticated = False
        return user, authenticated

    def _make_token(self, data, timeout):
        s = Serializer(current_app.config['SECRET_KEY'], timeout)
        return s.dumps(data)

    def _verify_token(self, token):
        s = Serializer(current_app.config['SECRET_KEY'])
        data = None
        expired, invalid = False, False
        try:
            data = s.loads(token)
        except SignatureExpired:
            expired = True
        except Exception:
            invalid = True
        return expired, invalid, data

    def make_reset_token(self, expiration=3600):
        """Creates a reset token. The duration can be configured through the
        expiration parameter.

        :param expiration: The time in seconds how long the token is valid.
        """
        return self._make_token({'id': self.id, 'op': 'reset'}, expiration)

    def verify_reset_token(self, token):
        """Verifies a reset token. It returns three boolean values based on
        the state of the token (expired, invalid, data)

        :param token: The reset token that should be checked.
        """

        expired, invalid, data = self._verify_token(token)
        if data and data.get('id') == self.id and data.get('op') == 'reset':
            data = True
        else:
            data = False
        return expired, invalid, data

    def recalculate(self):
        """Recalculates the post count from the user."""
        post_count = Post.query.filter_by(user_id=self.id).count()
        self.post_count = post_count
        self.save()
        return self

    def all_topics(self, page):
        """Returns a paginated result with all topics the user has created."""

        return Topic.query.filter(Topic.user_id == self.id).\
            filter(Post.topic_id == Topic.id).\
            order_by(Post.id.desc()).\
            paginate(page, flaskbb_config['TOPICS_PER_PAGE'], False)

    def all_posts(self, page):
        """Returns a paginated result with all posts the user has created."""

        return Post.query.filter(Post.user_id == self.id).\
            paginate(page, flaskbb_config['TOPICS_PER_PAGE'], False)

    def track_topic(self, topic):
        """Tracks the specified topic

        :param topic: The topic which should be added to the topic tracker.
        """

        if not self.is_tracking_topic(topic):
            self.tracked_topics.append(topic)
            return self

    def untrack_topic(self, topic):
        """Untracks the specified topic

        :param topic: The topic which should be removed from the
                      topic tracker.
        """

        if self.is_tracking_topic(topic):
            self.tracked_topics.remove(topic)
            return self

    def is_tracking_topic(self, topic):
        """Checks if the user is already tracking this topic

        :param topic: The topic which should be checked.
        """

        return self.tracked_topics.filter(
            topictracker.c.topic_id == topic.id).count() > 0

    def add_to_group(self, group):
        """Adds the user to the `group` if he isn't in it.

        :param group: The group which should be added to the user.
        """

        if not self.in_group(group):
            self.secondary_groups.append(group)
            return self

    def remove_from_group(self, group):
        """Removes the user from the `group` if he is in it.

        :param group: The group which should be removed from the user.
        """

        if self.in_group(group):
            self.secondary_groups.remove(group)
            return self

    def in_group(self, group):
        """Returns True if the user is in the specified group

        :param group: The group which should be checked.
        """

        return self.secondary_groups.filter(
            groups_users.c.group_id == group.id).count() > 0

    @cache.memoize(timeout=max_integer)
    def get_groups(self):
        """Returns all the groups the user is in."""
        return [self.primary_group] + list(self.secondary_groups)

    @cache.memoize(timeout=max_integer)
    def get_permissions(self, exclude=None):
        """Returns a dictionary with all the permissions the user has.

        :param exclude: a list with excluded permissions. default is None.
        """

        exclude = exclude or []
        exclude.extend(['id', 'name', 'description'])

        perms = {}
        groups = self.secondary_groups.all()
        groups.append(self.primary_group)
        for group in groups:
            for c in group.__table__.columns:
                # try if the permission already exists in the dictionary
                # and if the permission is true, set it to True
                try:
                    if not perms[c.name] and getattr(group, c.name):
                        perms[c.name] = True

                # if the permission doesn't exist in the dictionary
                # add it to the dictionary
                except KeyError:
                    # if the permission is in the exclude list,
                    # skip to the next permission
                    if c.name in exclude:
                        continue
                    perms[c.name] = getattr(group, c.name)
        return perms

    def invalidate_cache(self):
        """Invalidates this objects cached metadata."""

        cache.delete_memoized(self.get_permissions, self)
        cache.delete_memoized(self.get_groups, self)

    def ban(self):
        """Bans the user. Returns True upon success."""

        if not self.get_permissions()['banned']:
            banned_group = Group.query.filter(Group.banned == True).first()

            self.primary_group_id = banned_group.id
            self.save()
            self.invalidate_cache()
            return True
        return False

    def unban(self):
        """Unbans the user. Returns True upon success."""

        if self.get_permissions()['banned']:
            member_group = Group.query.filter(Group.admin == False,
                                              Group.super_mod == False,
                                              Group.mod == False,
                                              Group.guest == False,
                                              Group.banned == False).first()

            self.primary_group_id = member_group.id
            self.save()
            self.invalidate_cache()
            return True
        return False

    def save(self, groups=None):
        """Saves a user. If a list with groups is provided, it will add those
        to the secondary groups from the user.

        :param groups: A list with groups that should be added to the
                       secondary groups from user.
        """

        if groups is not None:
            # TODO: Only remove/add groups that are selected
            secondary_groups = self.secondary_groups.all()
            for group in secondary_groups:
                self.remove_from_group(group)
            db.session.commit()

            for group in groups:
                # Do not add the primary group to the secondary groups
                if group.id == self.primary_group_id:
                    continue
                self.add_to_group(group)

            self.invalidate_cache()

        db.session.add(self)
        db.session.commit()
        return self

    def delete(self):
        """Deletes the User."""

        # This isn't done automatically...
        Conversation.query.filter_by(user_id=self.id).delete()
        ForumsRead.query.filter_by(user_id=self.id).delete()
        TopicsRead.query.filter_by(user_id=self.id).delete()

        # This should actually be handeld by the dbms.. but dunno why it doesnt
        # work here
        from flaskbb.forum.models import Forum

        last_post_forums = Forum.query.\
            filter_by(last_post_user_id=self.id).all()

        for forum in last_post_forums:
            forum.last_post_user_id = None
            forum.save()

        db.session.delete(self)
        db.session.commit()

        return self