One-to-many creation table

class User(db.Model):
    uid=db.Column(db.Integer,primary_key=True,autoincrement=True,comment='用户ID')
    mobile=db.Column(db.String(11),comment='手机号')
    password=db.Column(db.String(125),comment='密码')
    username=db.Column(db.String(156),comment='用户名')
    add=db.relationship('Address',backref='address')


#----------------------------------------------------------------------------#
class Address(db.Model):
    aid = db.Column(db.Integer, primary_key=True, autoincrement=True, comment='用户ID')
    add=db.Column(db.String(256),comment='地址')
    add_new=db.Column(db.String(256),comment='详细地址')
    name=db.Column(db.String(256),comment='名字')
    mobile=db.Column(db.String(11),comment='电话')
    add_id=db.Column(db.Integer,db.ForeignKey('user.uid'))

Many-to-many creation table

user_channel=db.Table(
    'user_channel',
    db.Column('user_id',db.Integer,db.ForeignKey('user_model.uid'),primary_key=True), # user_model The name of the table in the database
    db.Column('channel_id',db.Integer,db.ForeignKey('channel_model.cid'),primary_key=True), # channel_model The name of the table in the database
)


#------------------------------------------------------------------------------------#


class UserModel(db.Model):
    uid=db.Column(db.Integer,primary_key=True,autoincrement=True,comment='用户ID')
    mobile=db.Column(db.String(11),comment='用户手机号')
    username=db.Column(db.String(32),comment='昵称',default='')
    img=db.Column(db.String(300),comment='头像',default='')
    reg_time=db.Column(db.DateTime,default=datetime.now,comment='注册时间')
    intro=db.Column(db.String(256),default='this guy sucks,什么都没有留下',comment='简介')
    status=db.Column(db.Boolean,default=False,comment='true:冻结 false:正常')
    news=db.relationship('NewModel',backref='users')
    comment=db.relationship('CommentModel',backref='comment')

#================================================================#
# Create a table of channels
class ChannelModel(db.Model):
    cid=db.Column(db.Integer,primary_key=True,autoincrement=True,comment='id')
    name=db.Column(db.String(16),comment='频道名')
    num=db.Column(db.Integer,comment='数字越大,排名越靠前')
    user=db.relationship('UserModel',secondary=user_channel,backref=db.backref('channels'))
    news=db.relationship('NewModel',backref='channels')

增加

思路
1.获取数据
2.填入数据
3.实例化
4.对数据进行添加
5.进行提交
6.返回响应

代码实现

    def post(self):
        req=reqparse.RequestParser()
        req.add_argument('title')
        req.add_argument('people')
        req.add_argument('shebei')
        req.add_argument('hui_id',required=True)
        args=req.parse_args()
        db.session.add(HuiYi(
            title=args['title'],
            people=args['people'],
            shebei=args['shebei'],
            hui_id=args['hui_id']
        ))
        db.session.commit()

        return jsonify({
    
            'code':200,
            'msg':'添加数据成功'
        })

查找

思路
1.校验数据 获取用户的id
2.获取id
3.校验数据
4.Whether the user exists in the databaseid进行查找
5.进行获取
6.没有idto get all the data

代码实现

        req=reqparse.RequestParser()
        req.add_argument('hui_id')
        args=req.parse_args()
        hui=HuiYi.query.filter(HuiYi.hui_id==args['hui_id']).first()
        list=[]
        if hui:
            list.append({
    
                'hid':hui.hid,
                'hui_id': hui.hui_id,
                "title": hui.title,
                "people":hui.people,
                'shebei':hui.shebei
            })
            return jsonify({
    
                'code':200,
                'msg':'Getting a single data succeeded',
                'data':list
            })

        all=HuiYi.query.all()
        for i in all:
                list.append({
    
                    'hid': i.hid,
                    'hui_id': i.hui_id,
                    "title": i.title,
                    "people": i.people,
                    'shebei': i.shebei
                })
        return jsonify({
    
            'code':200,
            'msg':'Get all data successfully',
            'data':list
        })

修改

思路
1.获取数据
2.获取字段
3.实例化数据
4.Determine if there is any data to be modifiedid
5.Return a response if not
6.Otherwise, proceed to modify the dataid进行修改
7.成功返回响应

    def put(self):
        req=reqparse.RequestParser()
        req.add_argument('hid',required=True)
        req.add_argument('title')
        req.add_argument('people')
        req.add_argument('shebei')
        args=req.parse_args()
        user_info=HuiYi.query.get(args['hid'])
        if not user_info:
            return jsonify({
    
                'code':200,
                'msg':'会议不存在'
            })

        user_info.title=args['title']
        user_info.people=args['people']
        user_info.shebei=args['shebei']
        db.session.commit()
        return jsonify({
    
            'code':200,
            'msg':'数据修改成功'
        })

删除

思路
1.获取数据
2.获取必要的id
3.进行实例化
4.直接过滤出id对数据进行删除
5.进行提交‘’
6.返回响应

    def delete(self):
        req=reqparse.RequestParser()
        req.add_argument('hid',required=True)
        args=req.parse_args()
        HuiYi.query.filter(HuiYi.hid==args['hid']).delete()
        db.session.commit()
        return jsonify({
    
            'code':200,
            'msg':'删除成功'
        })
api.add_resource(YiLogin,'/yilogin')