class Post(db.Model):
"""Post model define."""
__tablename__ = "posts"
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)
def save(self, user=None, topic=None):
"""Save 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
"""
self.user_id = user.id
self.username = user.username
self.topic_id = topic.id
db.session.add(self)
db.session.commit()
class Forum(db.Model):
"""Forum model define."""
__tablename__ = "forums"
id = db.Column(db.Integer, primary_key=True)
title = db.Column(db.String(255), nullable=False)
description = db.Column(db.Text)
position = db.Column(db.Integer, default=1, nullable=False)
category_id = db.Column(db.Integer,
db.ForeignKey("categories.id"),
nullable=False)
groups = db.relationship(
"Group",
secondary=forumgroups,
primaryjoin=(forumgroups.c.forum_id == id),
backref="forumgroups",
lazy="joined",
)
def save(self, groups=None):
"""Save the object to the database."""
from lucheng.user.models import Group
if groups is None:
self.groups = Group.query.order_by(Group.name.asc()).all()
db.session.add(self)
db.session.commit()
return self
class Topic(db.Model):
"""Topic model define."""
__tablename__ = "topics"
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)
def save(self, user=None, forum=None, post=None):
"""
Save 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
# Insert and commit the topic
db.session.add(self)
db.session.commit()
# Create the topic post
post.save(user, self)
class Category(db.Model):
"""Category model define."""
__tablename__ = "categories"
id = db.Column(db.Integer, primary_key=True)
title = db.Column(db.String(255), nullable=False)
description = db.Column(db.Text)
position = db.Column(db.Integer, default=1, nullable=False)
# one to many
forums = db.relationship("Forum",
backref="category",
lazy="dynamic",
primaryjoin='Forum.category_id == Category.id',
order_by='asc(Forum.position)',
cascade='all, delete-orphan')
def save(self):
"""Save the object to the database."""
db.session.add(self)
db.session.commit()
return self
@classmethod
def get_all(cls, user):
"""Get all categories with all associated forums.
It returns a list with tuples. Those tuples are containing the category
and their associated forums (whose are stored in a list).
For example::
[(<Category 1>, [(<Forum 2>, <ForumsRead>), (<Forum 1>, None)]),
(<Category 2>, [(<Forum 3>, None), (<Forum 4>, None)])]
:param user: The user object is needed to check if we also need their
forumsread object.
"""
if user.is_authenticated:
from lucheng.user.models import Group
# forums = Forum.query.subquery()
# get list of user group ids
user_groups = [group.id for group in user.groups]
# filter forums by user groups
user_forums = Forum.query.\
filter(Forum.groups.any(Group.id.in_(user_groups))).subquery()
forum_alias = aliased(Forum, user_forums)
query_result = cls.query.\
join(forum_alias, cls.id == forum_alias.category_id).\
add_entity(forum_alias).\
all()
# print(query_result)
else:
query_result = cls.query.join(Forum, cls.id == Forum.category_id).\
add_entity(Forum).\
all()
forums = []
it = itertools.groupby(query_result, operator.itemgetter(0))
for key, value in it:
forums.append((key, [item[1] for item in value]))
return forums
"""
forum model define file.
Forum Category and so on
"""
import itertools
import operator
from sqlalchemy.orm import aliased
from lucheng.extensions import db
# m2m table for group-forum permission mapping
forumgroups = db.Table(
'forumgroups',
db.Column('group_id',
db.Integer(),
db.ForeignKey('groups.id'),
nullable=False),
db.Column('forum_id',
db.Integer(),
db.ForeignKey('forums.id', use_alter=True, name="fk_forum_id"),
nullable=False))
class Forum(db.Model):
"""Forum model define."""
__tablename__ = "forums"
id = db.Column(db.Integer, primary_key=True)
title = db.Column(db.String(255), nullable=False)
description = db.Column(db.Text)
class User(db.Model, UserMixin):
"""User define."""
__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)
def _get_password(self):
"""Return the hashed password."""
return self._password
def _set_password(self, password):
"""Check password, If password match it returns True, else False."""
if password is None:
return False
self._password = generate_password_hash(password)
_password = db.Column('password', db.String(120), nullable=False)
password = db.synonym('_password',
descriptor=property(_get_password, _set_password))
activated = db.Column(db.Boolean, default=False)
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')
# 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 save(self):
"""Save the object to the database."""
db.session.add(self)
db.session.commit()
return self
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)
@property
def groups(self):
"""Return the user groups."""
return [self.primary_group] + list(self.secondary_groups)
'''
class Group(db.Model):
"""Group define."""
__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)
banned = db.Column(db.Boolean, default=False, nullable=False)
# Moderator permissions (only available when the user a moderator)
mod_edituser = db.Column(db.Boolean, default=False, nullable=False)
mod_banuser = db.Column(db.Boolean, default=False, nullable=False)
# User permissions
editpost = db.Column(db.Boolean, default=True, nullable=False)
deletepost = db.Column(db.Boolean, default=False, nullable=False)
deletetopic = db.Column(db.Boolean, default=False, nullable=False)
posttopic = db.Column(db.Boolean, default=True, nullable=False)
postreply = db.Column(db.Boolean, default=True, nullable=False)
# 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, self.name)
def save(self):
"""Save the object to the database."""
db.session.add(self)
db.session.commit()
return self
"""
summary: models.py.
description: xxx
"""
from werkzeug.security import (generate_password_hash, check_password_hash)
from flask_login import UserMixin
from lucheng.extensions import db
groups_users = db.Table(
'groups_users',
db.Column('group_id', db.Integer(), db.ForeignKey('groups.id')),
db.Column('user_id', db.Integer(), db.ForeignKey('users.id')))
class Group(db.Model):
"""Group define."""
__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)
banned = db.Column(db.Boolean, default=False, nullable=False)
