class User(db.Model):
id = db.Column(db.Integer, primary_key=True)
password_hash = db.Column(db.String(128))
def set_password(self, password):
self.password_hash = generate_password_hash(password)
def validate_password(self, password):
return check_password_hash(self.password_hash, password)
class Comment(db.Model):
id = db.Column(db.Integer, primary_key=True)
author = db.Column(db.String(30))
email = db.Column(db.String(254))
site = db.Column(db.String(255))
body = db.Column(db.Text)
from_admin = db.Column(db.Boolean, default=False)
reviewed = db.Column(db.Boolean, default=False)
timestamp = db.Column(db.DateTime, default=datetime.utcnow, index=True)
replied_id = db.Column(db.Integer, db.ForeignKey('comment.id'))
post_id = db.Column(db.Integer, db.ForeignKey('post.id'))
post = db.relationship('Post', back_populates='comments')
replies = db.relationship('Comment', back_populates='replied', cascade='all, delete-orphan')
replied = db.relationship('Comment', back_populates='replies', remote_side=[id])
class Category(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(30), unique=True)
posts = db.relationship('Post', back_populates='category')
def delete(self):
default_category = Category.query.get(1)
posts = self.posts[:]
for post in posts:
post.category = default_category
db.session.delete(self)
db.session.commit()
def __repr__(self):
return '<Category: {}>'.format(self.name)
class Post(db.Model):
id = db.Column(db.Integer, primary_key=True)
title = db.Column(db.String(60))
body = db.Column(db.Text)
timestamp = db.Column(db.DateTime, default=datetime.utcnow, index=True)
can_comment = db.Column(db.Boolean, default=True)
category_id = db.Column(db.Integer, db.ForeignKey('category.id'))
#这个是外键的意思,mean,category_id <==> category.id, to build category id for relationship with category, category_id : post == one to many
category = db.relationship('Category', back_populates='posts')
# comments = db.relationship('Comment', backref='post', cascade='all') #here bug
comments = db.relationship('Comment', back_populates='post', cascade='all, delete-orphan')
class Admin(db.Model, UserMixin):
id = db.Column(db.Integer, primary_key=True)
username = db.Column(db.String(20), unique=True)
password_hash = db.Column(db.String(128))
# password hash messages
blog_title = db.Column(db.String(60))
# blog title
blog_sub_title = db.Column(db.String(100))
# blog sub title
name = db.Column(db.String(30))
# name
about = db.Column(db.Text)
# about messages
def set_password(self, password):
self.password_hash = generate_password_hash(password)
def validate_password(self, password):
return check_password_hash(self.password_hash, password)
def __repr__(self):
return '<Admin: {}>'.format(self.name)