Error Msg: SystemCheckError: System check identified some issues: ERRORS: users.Test.groups: (fields.E304) Reverse accessor for 'Test.groups' clashes with reverse accessor for 'User.groups'. HINT: Add or change a related_name argument to the definiti…

1. django 模型models 常用字段          1.models.AutoField 自增列 = int(11) 如果没有的话,默认会生成一个名称为 id 的列 如果要显式的自定义一个自增列,必须设置primary_key=True.   2.models.CharField 字符串字段 必须设置max_length参数   3.models.BooleanField 布尔类型=tinyint(1) 不能为空,可添加Blank=True   4.models.ComaSepar…

问题1:Missing parentheses in call to 'print' 原因:因为Python2.X和Python3.X不兼容.我安装的是Python3.X,但是我试图运行的却是Python2.X 的代码.所以上面的语法在python3中是错误的.在python3中,你需要将print后面的语句加括号,正确的写法:print ("hello world") 问题2:创建项目报错,django-admin startproject sundyblog File "…

BBS是一个最简单的项目.在我们把本节课程的代码手敲一遍后,算是实战项目有一个入门.首先一个项目的第一步是完成表设计,在没有完成表结构设计之前,千万不要动手开发(这是老司机的忠告!)废话不多说,现在我们就一步一步的把bbs系统实施出来:1.创建一个Django Project django-admin startproject s12bbs 2.创建app cd s12bbs/ python3. manage.py startapp bbs 3.创建templates(存放模版文件)和stati…

错误:漏掉了 max_length  属性 ERRORS:users.UserProfile.image: (fields.E210) Cannot use ImageField because Pillow is not installed. HINT: Get Pillow at https://pypi.python.org/pypi/Pillow or run command "pip install Pillow". image字段需要依赖另外一个库,pillow Value…

错误详情: auth.User.groups: (fields.E304) Reverse accessor for ‘User.groups’ clashes with reverse accessor for ‘User.groups’.HINT: Add or change a related_name argument to the definition for ‘User.groups’ or ‘User.groups’.auth.User.user_permissions: (fie…

第 1 章 课程介绍 1-1 项目演示和课程介绍: 第 2 章 Windows下搭建开发环境 2-1 Pycharm.Navicat和Python解释器的安装: Pycharmhttp://www.jetbrains.com/pycharm/ MacOS 版本的MySQL 8.0.12: Navicat for MySQL 11.1.3: Python 2.7.15: Pycharm Professional 2018.3; http://www.jetbrains.com/pycharm/ 2…

前言 xadmin上传图片和上传文件功能 依赖环境 如果没安装Pillow的话,会有报错:practise.Upload.upload_image: (fields.E210) Cannot use ImageField because Pillow is not installed. HINT: Get Pillow at https://pypi.python.org/pypi/Pillow or run command "pip install Pillow". 需先安装Pill…

前言 xadmin上传图片和上传文件功能 依赖环境 如果没安装Pillow的话,会有报错:practise.Upload.upload_image: (fields.E210) Cannot use ImageField because Pillow is not installed.HINT: Get Pillow at https://pypi.python.org/pypi/Pillow or run command "pip install Pillow". 需先安装Pillo…

错误详情: SystemCheckError: System check identified some issues: ERRORS:app01.UserInfo.groups: (fields.E304) Reverse accessor for 'UserInfo.groups' clashes with reverse accessor for 'User.groups'.HINT: Add or change a related_name argument to the definit…