Python ForeignKey示例

示例#1

class CourseExercise(db.Model):
    id = db.Column(db.Integer(), primary_key=True)
    course_id = db.Column(db.Integer(),
                          db.ForeignKey('course.id', ondelete='CASCADE'))
    number = db.Column(db.Integer())
    title = db.Column(db.String(50))
    archive = db.Column(db.LargeBinary())

示例#2

class CourseTask(db.Model):
    id = db.Column(db.Integer(), primary_key=True)
    exercise_id = db.Column(
        db.Integer(), db.ForeignKey('course_exercise.id', ondelete='CASCADE'))
    number = db.Column(db.Integer())
    title = db.Column(db.String(50))
    text = db.Column(db.String(), nullable=False)

示例#3

文件： users.py 项目： AbhijitVyas/openease_flask

from flask_user import UserMixin

from webrob.app_and_db import db

# Define the User-Roles pivot table
user_roles = db.Table(
    'user_roles', db.Column('id', db.Integer(), primary_key=True),
    db.Column('user_id', db.Integer(),
              db.ForeignKey('user.id', ondelete='CASCADE')),
    db.Column('role_id', db.Integer(),
              db.ForeignKey('role.id', ondelete='CASCADE')))


class Role(db.Model):
    id = db.Column(db.Integer(), primary_key=True)
    name = db.Column(db.String(50), unique=True)


class User(db.Model, UserMixin):
    id = db.Column(db.Integer, primary_key=True)
    active = db.Column(db.Boolean(), nullable=False, default=False)
    username = db.Column(db.String(50), nullable=False, unique=True)
    displayname = db.Column(db.String(50), nullable=False, default='')
    remoteapp = db.Column(db.String(50), nullable=False,
                          default='')  # TODO(daniel): unused
    email = db.Column(db.String(255), nullable=False, unique=True)
    confirmed_at = db.Column(db.DateTime())
    password = db.Column(db.String(255), nullable=False, default='')
    reset_password_token = db.Column(db.String(100),
                                     nullable=False,
                                     default='')

示例#4

文件： users.py 项目： winnerus/docker

from flask_user import UserMixin
from webrob.app_and_db import db

# Define the User-Roles pivot table
user_roles = db.Table('user_roles',
    db.Column('id', db.Integer(), primary_key=True),
    db.Column('user_id', db.Integer(), db.ForeignKey('user.id', ondelete='CASCADE')),
    db.Column('role_id', db.Integer(), db.ForeignKey('role.id', ondelete='CASCADE')))


class Role(db.Model):
    id = db.Column(db.Integer(), primary_key=True)
    name = db.Column(db.String(50), unique=True)

class User(db.Model, UserMixin):
    id = db.Column(db.Integer, primary_key=True)
    active = db.Column(db.Boolean(), nullable=False, default=False)
    username = db.Column(db.String(50), nullable=False, unique=True)
    email = db.Column(db.String(255), nullable=False, unique=True)
    confirmed_at = db.Column(db.DateTime())
    password = db.Column(db.String(255), nullable=False, default='')
    reset_password_token = db.Column(db.String(100), nullable=False, default='')
    api_token = db.Column(db.String(64), nullable=False, default='')
    container_id = db.Column(db.String(255), nullable=False, default='')

    # Relationships
    roles = db.relationship('Role', secondary=user_roles,
            backref=db.backref('users', lazy='dynamic'))
    
    def first_role(self):