class Comment(db.Model):
id = db.Column(db.Integer, primary_key=True)
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)
post_id = db.Column(db.Integer, db.ForeignKey('post.id'), nullable=False)
def __repr__(self):
return f"Comment('{self.content}', '{self.date_posted}')"
class ExamMark(db.Model):
id = db.Column(db.Integer, primary_key=True)
mark = db.Column(db.Integer, nullable=False)
grade = db.Column(db.String(10), nullable=True)
date_completed = db.Column(db.DateTime, default=datetime.utcnow)
exam_id = db.Column(db.Integer, db.ForeignKey('exam.id'), nullable=False)
student_id = db.Column(db.Integer, db.ForeignKey('student.id'), nullable=False)
def __repr__(self):
return f"ExamMark('{self.mark}', '{self.grade}')"
class HomeworkMark(db.Model):
id = db.Column(db.Integer, primary_key=True)
mark = db.Column(db.Integer, nullable=False)
grade = db.Column(db.String(10), nullable=True)
date_given = db.Column(db.DateTime, default=datetime.utcnow)
date_handed_in = db.Column(db.DateTime, default=datetime.utcnow)
homework_id = db.Column(db.Integer, db.ForeignKey('homework.id'), nullable=False)
student_id = db.Column(db.Integer, db.ForeignKey('student.id'), nullable=False)
def __repr__(self):
return f"HomeworkMark('{self.mark}', '{self.grade}', '{self.date_given}', '{self.date_handed_in}', '{self.homework_id}', '{self.student_id}')"
class Test(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)
topic_id = db.Column(db.Integer, db.ForeignKey('topic.id'), nullable=False)
max_mark = db.Column(db.Integer, nullable=False)
topic_id = db.Column(db.Integer, db.ForeignKey('topic.id'), nullable=False)
test_marks = db.relationship('TestMark', backref='test', lazy=True)
def __repr__(self):
return f"Test('{self.name}', '{self.date}', '{self.topic_id}', '{self.max_mark}')"
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 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 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}')"
return f"Post('{self.title}', '{self.date_posted}')"
class Comment(db.Model):
id = db.Column(db.Integer, primary_key=True)
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)
post_id = db.Column(db.Integer, db.ForeignKey('post.id'), nullable=False)
def __repr__(self):
return f"Comment('{self.content}', '{self.date_posted}')"
# Register link table between classes and students.
ClassRegister = db.Table('ClassRegister',
db.Column('class_id', db.Integer, db.ForeignKey('class.id')),
db.Column('student_id', db.Integer, db.ForeignKey('student.id')))
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}')"