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='default.jpg')
password = db.Column(db.String(60), nullable=False)
questions = db.relationship('Question', backref="author", lazy=True)
answers = db.relationship('Answer', backref="author", lazy=True)
def get_reset_token(self, expires_sec=1800):
s = Serializer(current_app.secret_key, expires_sec)
return s.dumps({'user_id': self.id}).decode("utf-8")
@staticmethod
def verify_reset_token(token):
s = Serializer(current_app.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 Question_Tag(db.Model):
id = db.Column(db.Integer, primary_key=True)
question_id = db.Column(db.Integer, db.ForeignKey('question.id'), nullable=False)
tag_id = db.Column(db.Integer, db.ForeignKey("tag.id"), nullable=False)
def __repr__(self):
return f"Question_Tag(qid:{self.question_id}, tid:{self.tag_id})"
class Question(db.Model):
id = db.Column(db.Integer, primary_key=True)
title = db.Column(db.String(100), nullable=False)
message = db.Column(db.Text(), nullable=False)
submission_time = db.Column(db.DateTime,
nullable=False,
default=datetime.utcnow)
vote_number = db.Column(db.Integer, nullable=False, default=0)
view_number = db.Column(db.Integer, nullable=False, default=0)
image = db.Column(db.String(60), nullable=True)
user_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)
voted_by = db.Column(db.String(), nullable=True)
def __repr__(self):
return f"Question('{self.title}', '{self.submission_time}')"
class Answer(db.Model):
id = db.Column(db.Integer, primary_key=True)
message = db.Column(db.String(300), nullable=False)
vote_number = db.Column(db.Integer, nullable=False, default=0)
question_id = db.Column(db.Integer,
db.ForeignKey("question.id"),
nullable=False)
submission_time = db.Column(db.DateTime,
nullable=False,
default=datetime.utcnow)
image = db.Column(db.String(60), nullable=True)
user_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)
voted_by = db.Column(db.String(), nullable=True)
def __repr__(self):
return f"Answer({self.message}, {self.submission_time}. Question_id={self.question_id})"
class Tag(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(15), nullable=False)
def __repr__(self):
return f"Tag({self.name})"