class Category(db.Model):
"""生成分类的类
规定了分类的各个属性及与文章的关系
Attributes:
id:分类的id，主键
name: 分类的名称，长度限制30，不能重复
posts: 设置中间表名称
"""
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):
"""删除分类
删除分类并将此分类下的文章移至默认分类
"""
default_category = Category.query.get(1)
posts = self.posts[:]
for post in posts:
post.category = default_category
db.session.delete(self)
db.session.commit()
class Comment(db.Model):
"""每条博客的评论"""
id = db.Column(db.Integer, primary_key=True)
author = db.Column(db.String(20))
email = db.Column(db.String(254))
# site表示发布comment的作者的个人网站
site = db.Column(db.String(255))
body = db.Column(db.Text)
# 是否是自己评论
from_admin = db.Column(db.Boolean, default=False)
timestamp = db.Column(db.DateTime, default=datetime.now(), index=True)
# Post:Comment=One:Many 一对多关系 Comment中含有Post的外键
post_id = db.Column(db.Integer, db.ForeignKey('post.id'))
post = db.relationship('Post', back_populates='comments')
# 评论审查是否通过
reviewed = db.Column(db.Boolean, default=False)
# 得到评论的回复列表，此字段在项目中没有用到
# replies = db.relationship('Comment', lazy='select',
# backref=db.backref('replied', remote_side=[id]),
# cascade='all,delete-orphan')
replies = db.relationship('Comment', back_populates='replied', cascade='all, delete-orphan')
# 还有一种特殊的评论，这种评论是对评论的评论，我暂且叫他回复
# 假如还有一个表叫Reply
# Comment:Reply=One:Many 回复同时也是一种特殊的评论，引用自己的主键，叫自关联
# replied_id:表示对那个comment进行的回复
replied_id = db.Column(db.Integer, db.ForeignKey('comment.id'))
# 根据post.html的理解，此字段表示当前reply是对那个comment的回答，这个是特殊的comment
replied = db.relationship('Comment', back_populates='replies', remote_side=[id])
class Comment(db.Model):
"""评论模型"""
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, comment='评论是否通过审核')
timestamp = db.Column(db.DateTime, default=datetime.utcnow, index=True)
replied_id = db.Column(db.Integer,
db.ForeignKey("comment.id")) # 设置外键指向自身id
post_id = db.Column(db.Integer, db.ForeignKey('post.id'))
post = db.relationship('Post', back_populates='comments')
# 集合关系属性replies 中的cascade参数设为all,当父评论被删除，所有子评论也删除
replies = db.relationship('Comment',
back_populates='replied',
cascade='all,delete-orphan')
# 将remote_side参数设为id字段，
# 把id字段定义为关系的远程侧（Remote Side）,replied_id相应的变为本地侧（Local Side）
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 __repr__(self):
return f'<Category {self.name}>'
class Comment(db.Model):
"""
author: 作者
email: 电子邮件
site: 站点
body: 正文
from_admin: 是否是管理员评论
reviewed: 是否通过审核
timestamp: 时间戳
"""
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)
# post表的id值
post_id = db.Column(db.Integer, db.ForeignKey('post.id'))
replied_id = db.Column(db.Integer, db.ForeignKey('comment.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)
# 集合关系属性
posts = db.relationship('Post', back_populates='category')
pass
class Comment(db.Model):
__tablename__ = 'comment'
id = db.Column(db.Integer, primary_key=True)
author = db.Column(db.String(30))
body = db.Column(db.Text)
timestamp = db.Column(db.DateTime, default=datetime.utcnow, index=True)
article_id = db.Column(db.Integer, db.ForeignKey('article.id'))
class Tag(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(16), unique=True)
posts = db.relationship('Post', secondary=association_table, back_populates='tags')
def delete(self):
db.session.delete(self)
db.session.commit()
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)
category_id = db.Column(db.Integer, db.ForeignKey('category.id'))
category = db.relationship('Category', back_populates='posts')
comments = db.relationship('Comment', back_populates='post', cascade='all')
class Category(db.Model): #文章的分类
__table_args__ = {'extend_existing': True}
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(30), unique=True)
posts = db.relationship('Post', back_populates='category')
def __repr__(self):
return '<Category {}>'.format(self.name)
class Category(db.Model):
"""博客分类"""
__tablename__ = 'category'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(20), nullable=False, unique=True)
# category.posts 知道category求category下所有的post
# post.post_of_category 知道post，求post所在的category
posts = db.relationship('Post', back_populates='category', cascade='all,delete-orphan')
class Article(db.Model):
__tablename__ = 'article'
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)
blogger_id = db.Column(db.Integer, db.ForeignKey('blogger.id'))
blogger = db.relationship('Blogger', backref='article')
comments = db.relationship('Comment',
backref='article',
cascade='all, delete-orphan')
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()
class Category(db.Model):
__tablename__ = 'category'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(30), unique=True) # 分类名称不能重复
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()
class Link(db.Model):
"""生成链接表的类
生成链接的各个属性
Attributes:
id:链接的表，主键
name:链接的名字
url:链接的链接
"""
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(30))
url = db.Column(db.String(255))
class Blogger(db.Model, UserMixin):
__tablename__ = 'blogger'
id = db.Column(db.Integer, primary_key=True)
username = db.Column(db.String(20))
password_hash = db.Column(db.String(128))
title = db.Column(db.Enum('博客专家', '博客牛人', '博客新人', '游客'),
server_default='游客')
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 Category(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(30), unique=True) # 分类名称不允许重复
# 和Post的双向关系
posts = db.relationship('Post', back_populates='category')
def delete(self):
default_category = Category.query.get(1)
posts = self.posts[:]
# 把当前分类下的所有文章都归类到默认分类
for post in posts:
post.category = default_category
db.session.delete(self)
db.session.commit()
class Category(db.Model):
"""文章分类"""
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(30), unique=True)
# 集合关系属性
posts = db.relationship('Post', back_populates='category')
def delete(self):
# 获取默认分类记录
default_category = Category.query.get(1)
posts = self.posts[:]
for post in posts:
post.category = default_category
db.session.delete(self)
db.session.commit()
class Category(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(30), unique=True)
status = db.Column(db.Enum('使用中', '废弃'),
server_default='使用中',
nullable=False)
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()
class Category(db.Model):
"""
分类
"""
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.filter_by(id=1).first()
posts = self.posts[:]
for post in posts:
# 用于循环的列表不能变化，如果这里用self.posts，它每次遍历时，值就不一样了
post.category = default_category
db.session.delete(self)
db.session.commit()
class Post(db.Model):
id = db.Column(db.Integer, primary_key=True)
title = db.Column(db.String(60))
body = db.Column(db.Text)
obperson = db.Column(db.Integer)
author = db.Column(db.String(30))
timestamp = db.Column(db.DateTime, default=datetime.utcnow, index=True)
# can_comment = db.Column(db.Boolean, default=True)
reviewed = db.Column(db.Boolean, default=False)
suggestion = db.Column(db.Text, default=None)
admin_id = db.Column(db.Integer, db.ForeignKey('admin.id'))
category_id = db.Column(db.Integer, db.ForeignKey('category.id'))
admin = db.relationship('Admin', back_populates='posts')
category = db.relationship('Category', back_populates='posts')
class Comment(db.Model):
id = db.Column(db.Integer, primary_key=True)
author = db.Column(db.String(50))
email = db.Column(db.String(254))
site = db.Column(db.String(254))
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)
post_id = db.Column(db.Integer, db.ForeignKey('post.id'))
post = db.relationship('Post', back_populates='comments')
reply_id = db.Column(db.Integer, db.ForeignKey('comment.id'))
reply = db.relationship('Comment',
back_populates='replies',
remote_side=[id])
replies = db.relationship('Comment', back_populates='reply', cascade='all')
class Major(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(15), unique=True)
remarks = db.Column(db.String(300))
exegesis = db.Column(db.String(30))
least = db.Column(db.Float())
maximum = db.Column(db.Float())
frequency = db.Column(db.Integer, index=True, default=0) # 次数
auto_id = db.Column(db.Integer, db.ForeignKey('auto.id'))
subcategorys = db.relationship('Subcategory',
back_populates='major',
cascade='all, delete')
timestamp = db.Column(db.DateTime, default=datetime.utcnow, index=True)
class Post(db.Model):
id = db.Column(db.Integer, primary_key=True)
title = db.Column(db.String(60))
# 从文章标题生成
slug = db.Column(db.String(240))
body = db.Column(db.Text)
timestamp = db.Column(db.DateTime, default=datetime.utcnow)
# 是否可以评论
can_comment = db.Column(db.Boolean, default=True)
category_id = db.Column(db.Integer, db.ForeignKey('category.id'))
category = db.relationship('Category', back_populates='posts')
# 评论
comments = db.relationship('Comment',
backref='post',
cascade='all,delete-orphan')
def to_json(self):
dict = self.__dict__
dict['category'] = self.category.name
dict['comments'] = len(self.comments)
if "_sa_instance_state" in dict:
del dict["_sa_instance_state"]
dict['timestamp'] = dict['timestamp'].strftime('%Y-%m-%d %H:%M:%S')
return dict
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)
# 子评论与父评论连接起来，多对一关系，在多的一侧建立外键
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')
# 与子评论链接起来，当父评论被删除时，一起删除；属于Comment类
replies = db.relationship('Comment', back_populates='replied', cascade='all, delete-orphan')
replied = db.relationship('Comment', back_populates='replies', remote_side=[id])
class basicsettings(db.Model):
id = db.Column(db.Integer, primary_key=True)
title = db.Column(db.String(150), index=True)
Keyword = db.Column(db.String(150), index=True)
description = db.Column(db.String(500), index=True)
frequency = db.Column(db.Integer, index=True, default=0) # 次数
auto_id = db.Column(db.Integer, db.ForeignKey('auto.id'))
timestamp = db.Column(db.DateTime, default=datetime.utcnow, index=True)
class Admin(db.Model):
id = db.Column(db.INTEGER, primary_key=True)
username = db.Column(db.String(20))
password_hash = db.Column(db.String(128))
blog_title = db.Column(db.String(60))
blog_sub_title = db.Column(db.String(100))
name = db.Column(db.String(30))
about = db.Column(db.Text)
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)
post_id = db.Column(db.Integer, db.ForeignKey('post.id'))
post = db.relationship('Post', back_populates='comments')
# 设置邻接关系,也就是内部的关联，内部的一对多
replied_id = db.Column(db.Integer, db.ForeignKey('comment.id'))
replied = db.relationship('Comment',
back_populates='replies',
remote_side=[id]) # remote_side确定了这个字段为多的一侧
replies = db.relationship('Comment',
back_populates='replied',
cascade='all')
class Experiment(db.Model):
id = db.Column(db.Integer, primary_key=True)
specimen = db.Column(db.Integer)
user = db.Column(db.String(30))
extensometer = db.Column(db.String(30))
body = db.Column(db.Text)
timestamp = db.Column(db.DateTime, default=datetime.utcnow, index=True)
can_edit = db.Column(db.Boolean, default=True)
category_id = db.Column(db.Integer, db.ForeignKey('category.id'))
category = db.relationship('Category', back_populates='experiments')
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) # 是否是管理员的评论
reviewed = db.Column(db.Boolean, default=False) # 该评论是否过了审核
timestamp = db.Column(db.DateTime, default=datetime.utcnow, index=True)
post_id = db.Column(db.Integer, db.ForeignKey('post.id'))
post = db.relationship('Post', back_populates='comments')
replied_id = db.Column(db.Integer, db.ForeignKey('comment.id'))
replied = db.relationship('Comment',
back_populates='replies',
remote_side=[id])
replies = db.relationship('Comment',
back_populates='replied',
cascade='all, delete-orphan')
