class Post(db.Model):
id = db.Column(db.Integer, primary_key=True)
content = db.Column(db.Text, nullable=False)
date_posted = db.Column(db.DateTime,
nullable=False,
default=datetime.utcnow)
date_shared = db.Column(db.DateTime)
user_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)
private = db.Column(db.Boolean, default=False, nullable=False)
likes = db.relationship('PostLike', backref='post', lazy='dynamic')
shares = db.relationship('PostShare',
foreign_keys='PostShare.shared_post_id',
backref='post',
lazy='dynamic')
def __repr__(self):
return f"User('{self.content}', '{self.private}','{self.likes}', '{self.date_posted}')"
class PostShare(db.Model):
__tablename__ = 'post_share'
id = db.Column(db.Integer, primary_key=True)
sharer_id = db.Column(db.Integer, db.ForeignKey('user.id'))
shared_post_id = db.Column(db.Integer, db.ForeignKey('post.id'))
class User(db.Model, UserMixin):
id = db.Column(db.Integer, primary_key=True)
username = db.Column(db.String(20), unique=True, nullable=False)
email = db.Column(db.String(120), unique=True, nullable=False)
image_file = db.Column(db.String(20),
nullable=False,
default='noprofile.jpg')
password = db.Column(db.String(60), nullable=False)
posts = db.relationship('Post', backref='author', lazy=True)
followed = db.relationship('User',
secondary=followers,
primaryjoin=(followers.c.follower_id == id),
secondaryjoin=(followers.c.followed_id == id),
backref=db.backref('followers', lazy='dynamic'),
lazy='dynamic')
shared = db.relationship('PostShare',
foreign_keys='PostShare.sharer_id',
backref='sharer',
lazy='dynamic')
def share_post(self, post):
if not self.has_shared_post(post):
share = PostShare(sharer_id=self.id, shared_post_id=post.id)
db.session.add(share)
db.session.commit()
def has_shared_post(self, post):
return PostShare.query.filter(PostShare.sharer_id == self.id,
PostShare.shared_post_id
== post.id).count() > 0
def followed_posts(self):
followed = Post.query.join(
followers, (followers.c.followed_id == Post.user_id)).filter(
followers.c.follower_id == self.id)
own = Post.query.filter_by(user_id=self.id)
return followed.union(own).order_by(Post.date_posted.desc())
def follow(self, user):
if not self.is_following(user):
self.followed.append(user)
def unfollow(self, user):
if self.is_following(user):
self.followed.remove(user)
def is_following(self, user):
return self.followed.filter(
followers.c.followed_id == user.id).count() > 0
liked = db.relationship('PostLike',
foreign_keys='PostLike.user_id',
backref='user',
lazy='dynamic')
# def share_post(self, post):
# share = PostShare(sharer_id=self.id, shared_post_id=post.id)
# db.session.add(share)
def like_post(self, post):
if not self.has_liked_post(post):
like = PostLike(user_id=self.id, post_id=post.id)
db.session.add(like)
def unlike_post(self, post):
if self.has_liked_post(post):
PostLike.query.filter_by(user_id=self.id, post_id=post.id).delete()
def has_liked_post(self, post):
return PostLike.query.filter(PostLike.user_id == self.id,
PostLike.post_id == post.id).count() > 0
def __repr__(self):
return f"User('{self.username}', '{self.email}', '{self.image_file}')"
class PostLike(db.Model):
__tablename__ = 'post_like'
id = db.Column(db.Integer, primary_key=True)
user_id = db.Column(db.Integer, db.ForeignKey('user.id'))
post_id = db.Column(db.Integer, db.ForeignKey('post.id'))
from datetime import datetime
from flask import current_app
from scurry import db, login_manager
from flask_login import UserMixin
@login_manager.user_loader
def load_user(user_id):
return User.query.get(int(user_id))
followers = db.Table(
'followers', db.Column('follower_id', db.Integer,
db.ForeignKey('user.id')),
db.Column('followed_id', db.Integer, db.ForeignKey('user.id')))
class User(db.Model, UserMixin):
id = db.Column(db.Integer, primary_key=True)
username = db.Column(db.String(20), unique=True, nullable=False)
email = db.Column(db.String(120), unique=True, nullable=False)
image_file = db.Column(db.String(20),
nullable=False,
default='noprofile.jpg')
password = db.Column(db.String(60), nullable=False)
posts = db.relationship('Post', backref='author', lazy=True)
followed = db.relationship('User',
secondary=followers,
primaryjoin=(followers.c.follower_id == id),
secondaryjoin=(followers.c.followed_id == id),