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82 lines
2.6 KiB
Python
82 lines
2.6 KiB
Python
from datetime import datetime
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from hashlib import md5
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from werkzeug.security import generate_password_hash, check_password_hash
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from flask_login import UserMixin
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from app import db, login
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@login.user_loader
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def load_user(id):
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return User.query.get(int(id))
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followers = db.Table(
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"followers",
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db.Column("follower_id", db.Integer, db.ForeignKey("user.id")),
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db.Column("followed_id", db.Integer, db.ForeignKey("user.id")),
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)
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class User(UserMixin, db.Model):
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id = db.Column(db.Integer, primary_key=True)
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username = db.Column(db.String(64), index=True, unique=True)
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email = db.Column(db.String(120), index=True, unique=True)
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password_hash = db.Column(db.String(128))
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posts = db.relationship("Post", backref="author", lazy="dynamic")
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about_me = db.Column(db.String(140))
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last_seen = db.Column(db.DateTime, default=datetime.utcnow)
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followed = db.relationship(
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"User",
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secondary=followers,
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primaryjoin=(followers.c.follower_id == id),
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secondaryjoin=(followers.c.followed_id == id),
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backref=db.backref("followers", lazy="dynamic"),
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lazy="dynamic",
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)
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def __repr__(self):
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return "<User {}>".format(self.username)
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def set_password(self, password):
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self.password_hash = generate_password_hash(password)
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def check_password(self, password):
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return check_password_hash(self.password_hash, password)
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def avatar(self, size):
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digest = md5(self.email.lower().encode("utf-8")).hexdigest()
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return "https://www.gravatar.com/avatar/{}?d=identicon&s={}".format(
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digest, size
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)
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def follow(self, user):
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if not self.is_following(user):
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self.followed.append(user)
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def unfollow(self, user):
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if self.is_following(user):
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self.followed.remove(user)
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def is_following(self, user):
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return (
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self.followed.filter(followers.c.followed_id == user.id).count()
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> 0
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)
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def followed_posts(self):
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followed = Post.query.join(
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followers, (followers.c.followed_id == Post.user_id)
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).filter(followers.c.follower_id == self.id)
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own = Post.query.filter_by(user_id=self.id)
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return followed.union(own).order_by(Post.timestamp.desc())
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class Post(db.Model):
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id = db.Column(db.Integer, primary_key=True)
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body = db.Column(db.String(140))
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timestamp = db.Column(db.DateTime, index=True, default=datetime.utcnow)
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user_id = db.Column(db.Integer, db.ForeignKey("user.id"))
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def __repr__(self):
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return "<Post {}>".format(self.body)
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