class Product(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(100), nullable=False, unique=True)
date_posted = db.Column(db.DateTime, nullable=False, default=datetime.now)
user_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)
def __repr__(self):
return f"Product('{self.title}', '{self.date_posted}')"
class User(db.Model):
__tablename__ = 'users'
id = db.Column(db.Integer, primary_key=True)
username = db.Column(db.String(64), unique=True, index=True)
role_id = db.Column(db.Integer, db.ForeignKey('roles.id'))
def __repr__(self):
return '<User %r>' % self.username
class Post(db.Model):
id = db.Column(db.Integer, primary_key=True)
body = db.Column(db.String(140))
timestamp = db.Column(db.DateTime, index=True, default=datetime.now)
user_id = db.Column(db.Integer, db.ForeignKey('user.id'))
def __repr__(self):
return '<Post {}>'.format(self.body)
class Employee(db.Model):
__tablename__ = 'employees'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.Text, nullable=False)
department_id = db.Column(db.Integer, db.ForeignKey('departments.id'))
def __init__(self, name):
self.name = name
class Post(db.Model):
id = db.Column(db.Integer, primary_key=True)
title = db.Column(db.String(100), nullable=False)
date_posted = 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_posted}')"
class Post(db.Model): # backend for post module
id = db.Column(db.Integer, primary_key = True)
title = db.Column(db.String(20), nullable = False)
time = db.Column(db.DateTime, default = datetime.utcnow(), nullable = False)
content = db.Column(db.String(200), nullable = False)
user_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable = False)
def __repr__(self):
return f"Post('{self.title}','{self.time}')"
class Couses(db.Model):
__tablename__ = 't_courses'
id = db.Column(db.Integer, primary_key=True)
title = db.Column(db.String(255))
abstract = db.Column(db.String(255))
addtime = db.Column(db.DateTime)
k_id = db.Column(db.Integer, db.ForeignKey('t_kinds.id'))
# cascade='delete' 一对多关系中，父表数据删除，字表也跟着删除
videos = relationship('Videos', backref='courses', cascade='delete')
class Videos(db.Model):
__tablename__ = 't_videos'
id = db.Column(db.Integer, primary_key=True)
title = db.Column(db.String(255))
time = db.Column(db.Integer)
hits = db.Column(db.Integer)
addtime = db.Column(db.DateTime)
abstract = db.Column(db.String(255))
t_id = db.Column(db.Integer)
c_id = db.Column(db.Integer, db.ForeignKey('t_courses.id'))
class User(UserMixin, db.Model):
__tablename__ = 'users'
id = db.Column(db.Integer, primary_key=True)
email = db.Column(db.String(64), unique=True, index=True)
username = db.Column(db.String(64), unique=True, index=True)
role_id = db.Column(db.Integer, db.ForeignKey('roles.id'))
password_hash = db.Column(db.String(128))
@property
def password(self):
raise AttributeError('password is not a readable attribute')
@password.setter
def password(self, password):
self.password_hash = generate_password_hash(password)
def verify_password(self, password):
return check_password_hash(self.password_hash, password)
def __repr__(self):
return '<User %r>' % self.username
from hello import db
from datetime import datetime
from werkzeug.security import generate_password_hash, check_password_hash
from flask_login import UserMixin
from hello import login
from hashlib import md5
followers = db.Table(
'followers', db.Column('follower_id', db.Integer,
db.ForeignKey('user.id')),
db.Column('followed_id', db.Integer, db.ForeignKey('user.id')))
@login.user_loader
def load_user(id):
return User.query.get(int(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)
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.now)
followed = db.relationship('User',
secondary='followers',
primaryjoin=(followers.c.follower_id == id),
secondaryjoin=(followers.c.followed_id == id),
backref=db.backref('followers', lazy='dynamic'),