class User(db.Model, UserMixin):
id = db.Column(db.Integer, primary_key=True)
username = db.Column(db.String(20), unique=True, nullable=False)
email = db.Column(db.String(120), unique=True, nullable=False)
image_file = db.Column(db.String(20), nullable=False, default='def.png')
password = db.Column(db.String(60), nullable=False)
posts = db.relationship('Post', backref='author', lazy=True)
courses = db.relationship('Course', backref='teacher', lazy=True)
comments = db.relationship('Comment', backref='commenter', lazy=True)
def get_reset_token(self, expires_sec=1800):
s = Serializer(app.config['SECRET_KEY'], expires_sec)
return s.dumps({'user_id': self.id}).decode('utf-8')
@staticmethod
def verify_reset_token(token):
s = Serializer(app.config['SECRET_KEY'])
try:
user_id = s.loads(token)['user_id']
except:
return None
return User.query.get(user_id)
def __repr__(self):
return f"User('{self.username}', '{self.email}', '{self.image_file}')"
class Topic(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)
start_date = db.Column(db.DateTime, default=datetime.utcnow)
end_date = db.Column(db.DateTime)
homeworks = db.relationship('Homework', backref='topic', lazy=True)
tests = db.relationship('Test', backref='topic', lazy=True)
def __repr__(self):
return f"Topic('{self.name}')"
class Student(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(100), nullable=False)
email = db.Column(db.String(35))
address = db.Column(db.Text)
parent_phone = db.Column(db.String(35))
predicted_grade = db.Column(db.String(35))
homework_marks = db.relationship('HomeworkMark', backref='student', lazy=True)
test_marks = db.relationship('TestMark', backref='student', lazy=True)
exam_marks = db.relationship('ExamMark', backref='student', lazy=True)
def __repr__(self):
return f"Student('{self.name}', '{self.email}', '{self.address}', '{self.parent_phone}', '{self.predicted_grade}')"
class Course(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(100), nullable=False)
start_date = db.Column(db.DateTime, default=datetime.utcnow)
year_num = db.Column(db.Integer, nullable=False)
grading_system = db.Column(db.String(10), nullable=False)
user_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)
classes = db.relationship('Class', backref='course', lazy=True)
topics = db.relationship('Topic', backref='course', lazy=True)
exams = db.relationship('Exam', backref='course', lazy=True)
def __repr__(self):
return f"Course('{self.name}', '{self.grading_system}')"
class Class(db.Model):
id = db.Column(db.Integer, primary_key=True)
class_name = db.Column(db.String(100), nullable=False)
class_starting_date = db.Column(db.DateTime, nullable=False)
course_id = db.Column(db.Integer, db.ForeignKey('course.id'), nullable=False)
students = db.relationship('Student', secondary=ClassRegister, backref=db.backref('classes'))
def __repr__(self):
return f"Class('{self.class_name}', '{self.class_starting_date}')"
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)
comments = db.relationship('Comment', backref='post', lazy=True)
def __repr__(self):
return f"Post('{self.title}', '{self.date_posted}')"
class Exam(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(100), nullable=False)
date = db.Column(db.DateTime, nullable=False)
max_mark = db.Column(db.Integer, nullable=False)
course_id = db.Column(db.Integer, db.ForeignKey('course.id'), nullable=False)
exam_marks = db.relationship('ExamMark', backref='exam', lazy=True)
def __repr__(self):
return f"Exam('{self.name}', '{self.date}', '{self.topic_id}', '{self.grade_system}', '{self.max_mark}')"
class Homework(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(100), nullable=False)
due_date = db.Column(db.DateTime, nullable=False)
max_mark = db.Column(db.Integer, nullable=False)
topic_id = db.Column(db.Integer, db.ForeignKey('topic.id'), nullable=False)
homework_marks = db.relationship('HomeworkMark', backref='homework', lazy=True)
def __repr__(self):
return f"Homework('{self.name}', '{self.due_date}', '{self.topic_id}', '{self.max_mark}')"