class Category(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(100), nullable=False, unique=True)
description = db.Column(db.Text(1000), nullable=True)
courses = db.relationship('Course', backref='category', lazy='dynamic')
access_rights = db.relationship('Access_rights',
backref='category',
lazy='dynamic')
def __init__(self, name, description):
self.name = name
self.description = description
def __repr__(self):
return self.name
class Lesson(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(100), nullable=False)
course_id = db.Column(db.Integer, db.ForeignKey('course.id'), nullable=False)
description = db.Column(db.Text(1000), nullable=True)
videos = db.relationship('Video', backref='lesson', lazy='dynamic')
images = db.relationship('Image', backref='lesson', lazy='dynamic')
textlectures = db.relationship('TextLecture', backref='lesson', lazy='dynamic')
audios = db.relationship('Audio', backref='lesson', lazy='dynamic')
__table_args__ = (db.UniqueConstraint('course_id', 'name'),)
def __init__(self, name, course_id, description):
self.name = name
self.course_id = course_id
self.description = description
def __repr__(self):
return '<Lesson {}>'.format(self.name)
class User(db.Model, UserMixin):
id = db.Column(db.Integer, primary_key=True)
username = db.Column(db.String(64), index=True, unique=True)
password = db.Column(db.String(128))
role = db.Column(db.String(10), index=True)
access_rights = db.relationship('Access_rights',
backref='user',
lazy='dynamic')
def set_password(self, password):
self.password = generate_password_hash(password)
def check_password(self, password):
return check_password_hash(self.password, password)
@property
def is_admin(self):
return self.role == 'admin'
@property
def is_teacher(self):
return self.role == 'teacher'
@property
def is_student(self):
return self.role == 'student'
def __repr__(self):
return self.username
class Category(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(100), nullable=False, unique=True)
courses = db.relationship('Course', backref='category', lazy='dynamic')
def __init__(self, name):
self.name = name
def __repr__(self):
return '<Category {}>'.format(self.name)
class Course(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(100), nullable=False)
category_id = db.Column(db.Integer,
db.ForeignKey('category.id', ondelete='CASCADE'),
nullable=False)
description = db.Column(db.Text(1000), nullable=True)
lessons = db.relationship('Lesson', backref='course', lazy='dynamic')
access_rights = db.relationship('Access_rights',
backref='course',
lazy='dynamic')
__table_args__ = (db.UniqueConstraint('category_id', 'name'), )
def __init__(self, name, category_id, description):
self.name = name
self.category_id = category_id
self.description = description
def __repr__(self):
return self.name