class Role(db.Model):
id = db.Column(db.Integer(), primary_key=True)
name = db.Column(db.String(80), unique=True)
description = db.Column(db.String(255))
def __init__(self, name):
self.name = name
def __repr_(self):
return "<Role {}>".format(self.name)
class Tag(db.Model):
# __tablename__ = 'your_table_name' 通过该方法可以使用已经存在的表
id = db.Column(db.Integer(),primary_key = True)
title = db.Column(db.String(255))
def __init__(self,title):
self.title = title
def __repr__(self):
return "<Tag '{}'>".format(self.title)
class Comment(db.Model):
# __tablename__ = 'your_table_name' 通过该方法可以使用已经存在的表
id = db.Column(db.Integer(),primary_key = True)
name = db.Column(db.String(255))
text = db.Column(db.Text())
date = db.Column(db.DateTime())
post_id = db.Column(db.Integer(),db.ForeignKey('post.id'))
def __repr__(self):
return "<Comment '{}'>".format(self.text[:15])
class User(db.Model):
# __tablename__ = 'your_table_name' 通过该方法可以使用已经存在的表
id = db.Column(db.Integer(), primary_key=True)
username = db.Column(db.String(255))
password = db.Column(db.String(255))
posts = db.relationship(
'Post',
backref='user', #backref 可以使得通过Post.user 属性对User对象进行读取和修改
lazy='dynamic')
roles = db.relationship('Role',
secondary=roles,
backref=db.backref('users', lazy='dynamic'))
def __init__(self, username):
self.username = username
default = Role.query.filter_by(name="default").one()
self.roles.append(default)
def __repr__(self):
return "<User '{}'>".format(self.username)
def set_password(self, password):
self.password = bcrypt.generate_password_hash(password)
def check_password(self, password):
return bcrypt.check_password_hash(self.password, password)
def is_authenticated(self):
if isinstance(self, AnonymousUserMixin):
return False
else:
return True
def is_active(self):
return True
def is_anonymous(self):
if isinstance(self, AnonymousUserMixin):
return True
else:
return False
def get_id(self):
return str(self.id)
class Category(db.Model):
'''课程类别'''
id = db.Column(db.Integer(), primary_key=True)
name = db.Column(db.String(255), unique=True)
def __init__(self, name):
self.name = name
def __repr__(self):
return "<Category '{}'>".format(self.name)
class Student(db.Model):
'''学生'''
id = db.Column(db.Integer(), primary_key=True)
name = db.Column(db.String(255))
gender = db.Column(
db.String(255)
) #db.Column(Enum("female", "male", name="gender_enum", create_type=False))
birthday = db.Column(db.Date())
single_courses = db.relationship('Single_course',
backref='student',
lazy='dynamic')
categorys = db.relationship('Category',
secondary=categorys,
backref=db.backref('students', lazy='dynamic'))
def __init__(self, name, gender, birthday):
self.name = name
self.gender = gender
self.birthday = birthday
def __repr__(self):
return "<Student '{}'>".format(self.name)
class Single_course(db.Model):
'''
一对一课程
'''
id = db.Column(db.Integer(), primary_key=True)
student_id = db.Column(db.Integer(), db.ForeignKey('student.id'))
teacher_id = db.Column(db.Integer(), db.ForeignKey('teacher.id'))
section = db.Column(
db.String(255)
) # db.Column(Enum("1", "2","3","4","5","6","7","8" ,name="section_enum", create_type=False))
date = db.Column(db.Date())
def __init__(self, date, section):
self.section = section
self.date = date
def __repr__(self):
return "<Single_course '{}-{}'>".format(self.date, self.section)
class Post(db.Model):
# __tablename__ = 'your_table_name' 通过该方法可以使用已经存在的表
id = db.Column(db.Integer(),primary_key = True)
title = db.Column(db.String(255))
text = db.Column(db.Text())
publish_date = db.Column(db.DateTime())
comments = db.relationship(
'Comment',
backref = 'post',
lazy = 'dynamic'
)
user_id = db.Column(db.Integer(),db.ForeignKey('user.id'))
tags = db.relationship(
'Tag',
secondary = tags,
backref = db.backref('posts',lazy='dynamic')
)
def __init__(self,title):
self.title = title
def __repr__(self):
return "<Post '{}'>".format(self.title)