class Tag(BaseMixin, db.Model):
__tablename__ = 'tags'
name = db.Column(db.String(128), default='', unique=True)
__table_args__ = (
db.Index('idx_name', name),
)
def __repr__(self):
return self.name
@classmethod
def get_by_name(cls, name):
return cls.query.filter_by(name=name).first()
def delete(self):
raise NotAllowedException
def update(self, **kwargs):
raise NotAllowedException
@classmethod
def create(cls, **kwargs):
name = kwargs.pop('name')
kwargs['name'] = name.lower()
return super().create(**kwargs)
@classmethod
def __flush_event__(cls, target):
rdb.delete(MC_KEY_ALL_TAGS)
class LikeItem(ActionMixin, db.Model):
__tablename__ = 'like_items'
user_id = db.Column(db.Integer)
target_id = db.Column(db.Integer)
target_kind = db.Column(db.Integer)
action_type = 'like'
__table_args__ = (
db.Index('idx_ti', target_id, target_kind, user_id),
)
class CollectItem(ActionMixin, db.Model):
__tablename__ = 'collect_items'
user_id = db.Column(db.Integer)
target_id = db.Column(db.Integer)
target_kind = db.Column(db.Integer)
action_type = 'collect'
__table_args__ = (
db.Index('idx_ti_tk_ui', target_id, target_kind, user_id),
)
class CommentItem(ActionMixin, LikeMixin, db.Model):
__tablename__ = 'comment_items'
user_id = db.Column(db.Integer)
target_id = db.Column(db.Integer)
target_kind = db.Column(db.Integer)
ref_id = db.Column(db.Integer, default=0)
content = PropsItem('content', '')
kind = K_COMMENT
action_type = 'comment'
__table_args__ = (db.Index('idx_ti_tk', target_id, target_kind, user_id), )
@cached_hybrid_property
def html_content(self):
return self.content
@cached_hybrid_property
def user(self):
return User.get(self.user_id)
class Contact(BaseMixin, db.Model):
__tablename__ = 'contacts'
to_id = db.Column(db.Integer)
from_id = db.Column(db.Integer)
__table_args__ = (
db.UniqueConstraint('from_id', 'to_id', name='uk_from_to'),
db.Index('idx_to_time_from', to_id, 'created_at', from_id),
db.Index('idx_time_to_from', 'created_at', to_id, from_id),
)
def update(self, **kwargs):
raise NotAllowedException
@classmethod
def create(cls, **kwargs):
ok, obj = super().create(**kwargs)
cls.clear_mc(obj, 1)
if ok:
from handler.tasks import feed_to_followers
feed_to_followers.delay(obj.from_id, obj.to_id)
return ok, obj
def delete(self):
super().delete()
self.clear_mc(self, -1)
from handler.tasks import remove_user_posts_from_feed
remove_user_posts_from_feed.delay(self.from_id, self.to_id)
@classmethod
@cache(MC_KEY_FOLLOWERS % ('{user_id}', '{page}'))
def get_follower_ids(cls, user_id, page=1):
query = cls.query.with_entities(cls.from_id).filter_by(
to_id=user_id)
followers = query.paginate(page, PER_PAGE)
followers.items = [id for id, in followers.items]
del followers.query
return followers
@classmethod
@cache(MC_KEY_FOLLOWING % ('{user_id}', '{page}'))
def get_following_ids(cls, user_id, page=1):
query = cls.query.with_entities(cls.to_id).filter_by(
from_id=user_id)
following = query.paginate(page, PER_PAGE)
following.items = [id for id, in following.items]
del following.query
return following
@classmethod
@cache(MC_KEY_FOLLOW_ITEM % ('{from_id}', '{to_id}'))
def get_follow_item(cls, from_id, to_id):
return cls.query.filter_by(from_id=from_id, to_id=to_id).first()
@classmethod
def clear_mc(cls, target, amount):
to_id = target.to_id
from_id = target.from_id
st = userFollowStats.get_or_create(to_id)
follower_count = st.follower_count or 0
st.follower_count = follower_count + amount
st.save()
st = userFollowStats.get_or_create(from_id)
following_count = st.following_count or 0
st.following_count = following_count + amount
st.save()
rdb.delete(MC_KEY_FOLLOW_ITEM % (from_id, to_id))
for user_id, total, mc_key in (
(to_id, follower_count, MC_KEY_FOLLOWERS),
(from_id, following_count, MC_KEY_FOLLOWING)):
pages = math.ceil((max(total, 0) or 1) / PER_PAGE)
for p in range(1, pages + 1):
rdb.delete(mc_key % (user_id, p))
class Post(BaseMixin, CommentMixin, LikeMixin, CollectMixin, db.Model):
__tablename__ = 'posts'
author_id = db.Column(db.Integer)
title = db.Column(db.String(128), default='')
orig_url = db.Column(db.String(255), default='')
can_comment = db.Column(db.Boolean, default=True)
content = PropsItem('content', '')
kind = K_POST
__table_args__ = (
db.Index('idx_title', title),
db.Index('idx_authorId', author_id)
)
def url(self):
return '/{}/{}/'.format(self.__class__.__name__.lower(), self.id)
@classmethod
def __flush_event__(cls, target):
rdb.delete(MC_KEY_ALL_TAGS)
@classmethod
def get(cls, identifier):
if is_numeric(identifier):
return cls.cache.get(identifier)
return cls.cache.filter(title=identifier).first()
@property
@cache(MC_KEY_POST_TAGS % ('{self.id}'))
def tags(self):
at_ids = PostTag.query.with_entities(
PostTag.tag_id).filter(
PostTag.post_id == self.id
).all()
tags = Tag.query.filter(Tag.id.in_((id for id, in at_ids))).all()
return tags
@classmethod
@cache(MC_KEY_POST_LIST % ('{page}', '{per_page}', '{order_by}'))
def get_posts_list(cls, page=1, per_page=10, order_by='id'):
query = cls.query.filter().order_by(order_by)
posts = query.paginate(page, per_page)
del posts.query # Fix `TypeError: can't pickle _thread.lock objects`
return posts
@cached_hybrid_property
def abstract_content(self):
return trunc_utf8(self.content, 100)
@cached_hybrid_property
def author(self):
return User.get(self.author_id)
@classmethod
def create_or_update(cls, **kwargs):
tags = kwargs.pop('tags', [])
created, obj = super(Post, cls).create_or_update(**kwargs)
if tags:
PostTag.update_multi(obj.id, tags, [])
# 发送Celery任务
if created:
from handler.tasks import feed_post, reindex
reindex.delay(obj.id, obj.kind, op_type='create')
feed_post.delay(obj.id)
return created, obj
def delete(self):
id = self.id
super().delete()
for pt in PostTag.query.filter_by(post_id=id):
pt.delete()
from handler.tasks import remove_post_from_feed
remove_post_from_feed.delay(self.id, self.author_id)
@cached_hybrid_property
def netloc(self):
return urlparse(self.orig_url).netloc
@staticmethod
def _flush_insert_event(mapper, connection, target):
target._flush_event(mapper, connection, target)
target.__flush_insert_event__(target)
class PostTag(BaseMixin, db.Model):
__tablename__ = 'post_tags'
post_id = db.Column(db.Integer)
tag_id = db.Column(db.Integer)
__table_args__ = (
db.Index('idx_post_id', post_id, 'updated_at'),
db.Index('idx_tag_id', tag_id, 'updated_at'),
)
@classmethod
def _get_posts_by_tag(cls, identifier):
if not identifier:
return []
if not is_numeric(identifier):
tag = Tag.get_by_name(identifier)
if not tag:
return
identifier = tag.id
at_ids = cls.query.with_entities(cls.post_id).filter(
cls.tag_id == identifier
).all()
query = Post.query.filter(
Post.id.in_(id for id, in at_ids)).order_by(Post.id.desc())
return query
@classmethod
@cache(MC_KEY_POSTS_BY_TAG % ('{identifier}', '{page}'))
def get_posts_by_tag(cls, identifier, page, per):
query = cls._get_posts_by_tag(identifier)
if not query:
return []
posts = query.paginate(page, per)
del posts.query # Fix `TypeError: can't pickle _thread.lock objects`
return posts
@classmethod
@cache(MC_KEY_POST_STATS_BY_TAG % ('{identifier}'))
def get_count_by_tag(cls, identifier):
query = cls._get_posts_by_tag(identifier)
return query.count()
@classmethod
def update_multi(cls, post_id, tags, origin_tags=None):
if origin_tags is None:
origin_tags = Post.get(post_id).tags
need_add = set()
need_del = set()
for tag in tags:
if tag not in origin_tags:
need_add.add(tag)
for tag in origin_tags:
if tag not in tags:
need_del.add(tag)
need_add_tag_ids = set()
need_del_tag_ids = set()
for tag_name in need_add:
_, tag = Tag.create(name=tag_name)
need_add_tag_ids.add(tag.id)
for tag_name in need_del:
_, tag = Tag.create(name=tag_name)
need_del_tag_ids.add(tag.id)
if need_del_tag_ids:
obj = cls.query.filter(cls.post_id == post_id,
cls.tag_id.in_(need_del_tag_ids))
obj.delete(synchronize_session='fetch')
for tag_id in need_add_tag_ids:
cls.create(post_id=post_id, tag_id=tag_id)
db.session.commit()
@staticmethod
def _flush_insert_event(mapper, connection, target):
super(PostTag, target)._flush_insert_event(mapper, connection, target)
target.clear_mc(target, 1)
@staticmethod
def _flush_delete_event(mapper, connection, target):
super(PostTag, target)._flush_delete_event(mapper, connection, target)
target.clear_mc(target, -1)
@staticmethod
def _flush_after_update_event(mapper, connection, target):
super(PostTag, target)._flush_after_update_event(
mapper, connection, target)
target.clear_mc(target, 1)
@staticmethod
def _flush_before_update_event(mapper, connection, target):
super(PostTag, target)._flush_before_update_event(
mapper, connection, target)
target.clear_mc(target, -1)
@staticmethod
def clear_mc(target, amount):
post_id = target.post_id
tag_name = Tag.get(target.tag_id).name
for ident in (post_id, tag_name):
total = incr_key(MC_KEY_POST_STATS_BY_TAG % ident, amount)
pages = math.ceil((max(total, 0) or 1) / PER_PAGE)
for p in range(1, pages + 1):
rdb.delete(MC_KEY_POSTS_BY_TAG % (ident, p))
class User(db.Model, UserMixin, BaseMixin):
__tablename__ = 'users'
bio = db.Column(db.String(128), default='')
name = db.Column(db.String(128), default='')
nickname = db.Column(db.String(128), default='')
email = db.Column(db.String(191), default='')
password = db.Column(db.String(191))
website = db.Column(db.String(191), default='')
github_url = db.Column(db.String(191), default='')
last_login_at = db.Column(db.DateTime())
current_login_at = db.Column(db.DateTime())
last_login_ip = db.Column(db.String(100))
current_login_ip = db.Column(db.String(100))
login_count = db.Column(db.Integer)
active = db.Column(db.Boolean())
icon_color = db.Column(db.String(7))
confirmed_at = db.Column(db.DateTime())
company = db.Column(db.String(191), default='')
avatar_id = db.Column(db.String(20), default='')
roles = db.relationship('Role',
secondary=roles_users,
backref=db.backref('users', lazy='dynamic'))
_stats = None
__table_args__ = (
# db.Index('idx_name', name),
db.Index('idx_email', email), )
def url(self):
return '/user/{}'.format(self.id)
@property
def github_id(self):
return self.github_url.split('/')[-1]
@property
def avatar_path(self):
avatar_id = self.avatar_id
return '' if not avatar_id else '/static/avatars/{}.png'.format(
avatar_id)
def update_avatar(self, avatar_id):
self.avatar_id = avatar_id
self.save()
def upload_avatar(self, img):
avatar_id = generate_id()
filename = os.path.join(UPLOAD_FOLDER, 'avatars',
'{}.png'.format(avatar_id))
if isinstance(img, str) and img.startswith('http'):
r = requests.get(img, stream=True)
if r.status_code == 200:
with open(filename, 'wb') as f:
for chunk in r.iter_content(1024):
f.write(chunk)
else:
img.save(filename)
self.update_avatar(avatar_id)
def follow(self, from_id):
ok, _ = Contact.create(to_id=self.id, from_id=from_id)
if ok:
self._stats = None
return ok
def unfollow(self, from_id):
contact = Contact.get_follow_item(from_id, self.id)
if contact:
contact.delete()
self._stats = None
return True
return False
def is_followed_by(self, user_id):
contact = Contact.get_follow_item(user_id, self.id)
return bool(contact)
@property
def n_following(self):
return self._follow_stats[1]
@property
def n_followers(self):
return self._follow_stats[0]
@property
def _follow_stats(self):
if self._stats is None:
stats = userFollowStats.get(self.id)
if not stats:
self._stats = 0, 0
else:
self._stats = stats.follower_count, stats.following_count
return self._stats