class Post(db.Model): id = db.Column(db.Integer, primary_key=True) title = db.Column(db.String(50)) body = db.Column(db.String(140), nullable=True) timestamp = db.Column(db.DateTime, index=True, default=datetime.utcnow) user_id = db.Column(db.Integer, db.ForeignKey('user.id')) def __repr__(self): return '<Post {}>'.format(self.title)
class Account(db.Model): id = db.Column(db.Integer, primary_key=True) username = db.Column(db.String(80), unique=True) email = db.Column(db.String(80), unique=True) password = db.Column(db.String(80), unique=True) def __init__(self, username, email, password): self.username = username self.email = email self.password = password
class Post(db.Model): id = db.Column(db.Integer, primary_key=True) title = db.Column(db.String(100), nullable=False) date_history = db.Column(db.DateTime, nullable=False, default=datetime.utcnow) content = db.Column(db.Text, nullable=False) user_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False) def __repr__(self): return f"Post('{self.title}','{self.date_history}')"
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='default.jpg') password = db.Column(db.String(60), nullable=False) posts = db.relationship('Post', backref='author', lazy=True) def __repr__(self): return f"User('{self.username}','{self.email}','{self.image_file}')"
class User(UserMixin, db.Model): id = db.Column(db.Integer, primary_key=True) username = db.Column(db.String(64), index=True, unique=True) email = db.Column(db.String(120), index=True, unique=True) first_name = db.Column(db.String(50), nullable=True) last_name = db.Column(db.String(50), nullable=True) created_at = db.Column(db.DateTime(timezone=True), default=datetime.utcnow) password_hash = db.Column(db.String(128)) posts = db.relationship('Post', backref='author', lazy='dynamic') about_me = db.Column(db.String(140)) last_seen = db.Column(db.DateTime, default=datetime.utcnow) 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') def __repr__(self): return '<User {}>'.format(self.username) def set_password(self, password): self.password_hash = generate_password_hash(password) def check_password(self, password): return check_password_hash(self.password_hash, password) def avatar(self, size): email_hashed = md5(self.email.lower().encode('utf-8')).hexdigest() gravatar_url = 'https://www.gravatar.com' return gravatar_url + '/avatar/{}?d=identicon&s={}'.format( email_hashed, size) 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 def followed_posts(self): """ display blog posts written by the people followed by the user, including the user's own posts. """ 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.timestamp.desc())
from datetime import datetime from werkzeug.security import generate_password_hash, check_password_hash from flask_login import UserMixin from hashlib import md5 from flask_tutorial import db, login 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(UserMixin, db.Model): id = db.Column(db.Integer, primary_key=True) username = db.Column(db.String(64), index=True, unique=True) email = db.Column(db.String(120), index=True, unique=True) first_name = db.Column(db.String(50), nullable=True) last_name = db.Column(db.String(50), nullable=True) created_at = db.Column(db.DateTime(timezone=True), default=datetime.utcnow) password_hash = db.Column(db.String(128)) posts = db.relationship('Post', backref='author', lazy='dynamic') about_me = db.Column(db.String(140)) last_seen = db.Column(db.DateTime, default=datetime.utcnow) 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')