Python backref示例

示例#1

文件： models.py 项目： holidaysss/Flask-simple-web

class Answer(db.Model):
    __tablename__ = 'answer'
    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
    content = db.Column(db.Text, nullable=False)
    create_time = db.Column(db.DateTime, default=datetime.now())
    author_id = db.Column(db.Integer, db.ForeignKey('user.id'))
    question_id = db.Column(db.Integer, db.ForeignKey('question.id'))

    author = db.relationship('User', backref=db.backref('answers'))
    question = db.relationship('Question', backref=db.backref('answers', order_by=id.desc()))

示例#2

文件： models.py 项目： holidaysss/Garbage-classification-education-website

class SignIn(db.Model):
    __tablename__ = 'sign_in'
    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
    time = db.Column(db.DateTime, default=datetime.now())  # 签到时间
    num = db.Column(db.Integer)  # 连续天数

    user_id = db.Column(db.Integer, db.ForeignKey('user.id'))
    user = db.relationship('User', backref=db.backref('sign_in'))

示例#3

文件： models.py 项目： holidaysss/Flask-simple-web

class UserInfo(db.Model):
    __tabelname__ = 'user_info'
    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
    signature = db.Column(db.Text, nullable=False)
    birthday = db.Column(db.String(100), nullable=False)
    user_id = db.Column(db.Integer, db.ForeignKey('user.id'))

    user = db.relationship('User', backref=db.backref('user-info'))

示例#4

文件： models.py 项目： holidaysss/Flask-simple-web

class Question(db.Model):
    __tablename__ = 'question'
    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
    title = db.Column(db.String(100), nullable=False)
    content = db.Column(db.Text, nullable=False)
    # now()服务器第一次运行时间， now每次创建时的当前时间
    create_time = db.Column(db.DateTime, default=datetime.now())
    author_id = db.Column(db.Integer, db.ForeignKey('user.id'))

    author = db.relationship('User', backref=db.backref('questions'))

示例#5

文件： models.py 项目： holidaysss/Garbage-classification-education-website

class Notice(db.Model):
    __tabelname__ = 'notice'
    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
    title = db.Column(db.String(100), nullable=False)  # 通知标题
    content = db.Column(db.Text, nullable=False)  # 通知内容
    # now()服务器第一次运行时间， now每次创建时的当前时间
    create_time = db.Column(db.DateTime, default=datetime.now())
    school = db.Column(db.String(100))  # 通知适用范围

    author_id = db.Column(db.Integer, db.ForeignKey('user.id'))
    author = db.relationship('User', backref=db.backref('notices'))  # 外链(通知者)

示例#6

文件： models.py 项目： holidaysss/Garbage-classification-education-website

class Feedback(db.Model):
    __tablename__ = 'feedback'
    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
    title = db.Column(db.String(100), nullable=False)
    content = db.Column(db.Text)
    reply = db.Column(db.Text)  # 回复
    manager_id = db.Column(db.Integer)
    create_time = db.Column(db.DateTime, default=datetime.now())
    reply_time = db.Column(db.DateTime)  # 回复时间

    author_id = db.Column(db.Integer, db.ForeignKey('user.id'))
    author = db.relationship('User', backref=db.backref('feedbacks'))  # 用户