98 lines
3.3 KiB
Python
98 lines
3.3 KiB
Python
from datetime import datetime
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from hashlib import md5
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from time import time
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from flask_login import UserMixin
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from werkzeug.security import generate_password_hash, check_password_hash
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import jwt
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from app import app, db, login
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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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primary_key=True),
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db.Column('followed_id', db.Integer, db.ForeignKey('user.id'),
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primary_key=True)
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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', back_populates='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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following = db.relationship(
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'User', 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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lazy='dynamic', back_populates='followers')
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followers = db.relationship(
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'User', secondary=followers,
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primaryjoin=(followers.c.followed_id == id),
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secondaryjoin=(followers.c.follower_id == id),
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lazy='dynamic', back_populates='following')
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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 f'https://www.gravatar.com/avatar/{digest}?d=identicon&s={size}'
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def follow(self, user):
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if not self.is_following(user):
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self.following.append(user)
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def unfollow(self, user):
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if self.is_following(user):
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self.following.remove(user)
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def is_following(self, user):
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return user in self.following
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def following_posts(self):
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following = Post.query.join(
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followers, (followers.c.followed_id == Post.user_id)).filter(
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followers.c.follower_id == self.id)
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own = Post.query.filter_by(user_id=self.id)
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return following.union(own).order_by(Post.timestamp.desc())
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def get_reset_password_token(self, expires_in=600):
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return jwt.encode(
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{'reset_password': self.id, 'exp': time() + expires_in},
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app.config['SECRET_KEY'], algorithm='HS256')
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@staticmethod
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def verify_reset_password_token(token):
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try:
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id = jwt.decode(token, app.config['SECRET_KEY'],
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algorithms=['HS256'])['reset_password']
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except:
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return
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return User.query.get(id)
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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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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'), index=True)
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author = db.relationship('User', back_populates='posts')
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def __repr__(self):
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return '<Post {}>'.format(self.body)
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