django报错外理收集

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解决方法：

在设置文件下注释：

'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
#'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',

新手报错

RuntimeError at /index

You called this URL via POST, but the URL doesn't end in a slash and you have APPEND_SLASH set. Django can't redirect to the slash URL while maintaining POST data.
 Change your form to point to 127.0.0.1:8000/index/ (note the trailing slash), or set APPEND_SLASH=False in your Django settings.

解决方法，路由访问和提交要一致

片断

<form action="/index" method="post">

片断

path('index/',views.index)


安装xadmin时 编码出错：

"UnicodeDecodeError: 'gbk' codec can't decode byte 0xa4 in position 3444"

解决方法，手工下载，xadmin

网上搜索了一下，说是 python3 不支持 xadmin，结果还是找到了解决的方法

从错误中可以看到，是文件README.rst 出现了 Unicode 解码错误，这个文件时没有什么用处的，可以新建一个同名的空白文件替换掉

然后安装：

C:WINDOWSsystem32>pip install xadmin-master.zip

搞定。。

继随用户表后后台增加数据时报错问题三

1452，'无法添加或更新子行：外键约束失败（`mxonline` .django_admin_log`，CONSTRAINT`django_admin_log_user_id_c564eba6_fk_auth_user_id` FOREIGN KEY（`user_id`）REFERENCES` auth_user`（`id`））'）

在设置数据配置那儿加入红色部份，，

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'mxonline',
        'USER': 'root',
        'PASSWORD': '142857',
        'HOST': '127.0.0.1',
        'PORT': '3306',
        'OPTIONS': {
            "init_command": "SET foreign_key_checks = 0;",
        }
}

 }


______________________________________________________________________________________________
git  无法下载东西，报错：
fatal: open /dev/null or dup failed: No such file or directory

C:WindowsSystem32drivers ull.sys 从其他系统上拷贝一个过来覆盖，再启动 null 服务就正常了：

如何确定null.sys是否正常，很简单。实行如下命令：

C:UsersAdministrator>sc start null

SERVICE_NAME: null
        TYPE               : 1  KERNEL_DRIVER
        STATE              : 4  RUNNING
                                (STOPPABLE, NOT_PAUSABLE, IGNORES_SHUTDOWN)
        WIN32_EXIT_CODE    : 0  (0x0)
        SERVICE_EXIT_CODE  : 0  (0x0)
        CHECKPOINT         : 0x0
        WAIT_HINT          : 0x0
        PID                : 0
        FLAGS              :

链接：https://pan.baidu.com/s/1UtcZizm-iFcVk4OKrnFJVg 密码：1q4d


有一个更特么烦的报错可以让人自杀


在线安装xadmin时不响应，无反应，，，用下面的那个地址顺利解决

pip install

https://github.com/sshwsfc/xadmin/tarball/master

问题：django使用验证码组件报错：django-simple-captcha

build_attrs() takes from 1 to 2 positional arguments but 3 were given

解决方法，更新到最新版本即可

djanao报错：

Make sure you've included captcha.urls as explained in the INSTALLATION section on 
http://readthedocs.org/docs/django-simple-captcha/en/latest/usage.html#installation

解决方法： 
 
url  视图增加相路由

path("captcha/", include('captcha.urls'))

问题之：

The view users.views.RegisterView didn't return an HttpResponse object. It returned None instead.

可能没有对应函数，检查vivew视图逻辑

问题：模板解释不了，原样输出

{% else %}  解决方法{%  不能有空格

Django2.0异常：Specifying a namespace in include() without providing an app_name is not supported.

因为django2.0以上变化了好多，需要在分发的路由上面指定一下指定的是那个路由示例代码：

主路由：

path("org/", include('organization.urls',namespace="org")),

分发路由：红色那儿是重点，指点引用的app 名字

urlpatterns = [
    path("list/", OrgView.as_view(),name = "org_list"),

]
app_name = "organization"