4.django创建配置一个表单页面（留言箱）

用DW编写一个html文件：

    
    
    
	



    
留言箱
    
  
      姓名 :
        
  

    

  
      邮箱 :
        
  

    

  
      联系地址 :
        
  

    

  
      留言 :
        
  

    
  

    
     
    
    
    

将html文件命名为Message_board.html，快捷键ctrl+c复制，在templates目录下粘贴

在static目录下新建一个css目录，在创建一个style.css的文件。
在Message_board.html中，将style全部复制到style.css中，将头部尾部的style删除。
回到Message_board.html，将style删除，新建一个link，

配置数据库：
改成下面这样。

数据库配置好后我们来测试下是否能连接数据库，点击Tools，选择Run Manage.py Task

然后会出现No module named 'MySQLdb’错误：

Failed to get real commands on module "djangostart": python process died with code 1: Traceback (most recent call last):
  File "C:\Users\stjas\Envs\testvir2\lib\site-packages\django\db\backends\mysql\base.py", line 26, in 
    import MySQLdb as Database
ModuleNotFoundError: No module named 'MySQLdb'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "D:\Program Files\JetBrains\PyCharm 2018.3.2\helpers\pycharm\_jb_manage_tasks_provider.py", line 25, in 
    django.setup()
  File "C:\Users\stjas\Envs\testvir2\lib\site-packages\django\__init__.py", line 18, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "C:\Users\stjas\Envs\testvir2\lib\site-packages\django\apps\registry.py", line 108, in populate
    app_config.import_models(all_models)
  File "C:\Users\stjas\Envs\testvir2\lib\site-packages\django\apps\config.py", line 202, in import_models
    self.models_module = import_module(models_module_name)
  File "C:\Users\stjas\Envs\testvir2\lib\importlib\__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "", line 994, in _gcd_import
  File "", line 971, in _find_and_load
  File "", line 955, in _find_and_load_unlocked
  File "", line 665, in _load_unlocked
  File "", line 678, in exec_module
  File "", line 219, in _call_with_frames_removed
  File "C:\Users\stjas\Envs\testvir2\lib\site-packages\django\contrib\auth\models.py", line 4, in 
    from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
  File "C:\Users\stjas\Envs\testvir2\lib\site-packages\django\contrib\auth\base_user.py", line 49, in 
    class AbstractBaseUser(models.Model):
  File "C:\Users\stjas\Envs\testvir2\lib\site-packages\django\db\models\base.py", line 108, in __new__
    new_class.add_to_class('_meta', Options(meta, app_label))
  File "C:\Users\stjas\Envs\testvir2\lib\site-packages\django\db\models\base.py", line 307, in add_to_class
    value.contribute_to_class(cls, name)
  File "C:\Users\stjas\Envs\testvir2\lib\site-packages\django\db\models\options.py", line 263, in contribute_to_class
    self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
  File "C:\Users\stjas\Envs\testvir2\lib\site-packages\django\db\__init__.py", line 36, in __getattr__
    return getattr(connections[DEFAULT_DB_ALIAS], item)
  File "C:\Users\stjas\Envs\testvir2\lib\site-packages\django\db\utils.py", line 212, in __getitem__
    backend = load_backend(db['ENGINE'])
  File "C:\Users\stjas\Envs\testvir2\lib\site-packages\django\db\utils.py", line 116, in load_backend
    return import_module('%s.base' % backend_name)
  File "C:\Users\stjas\Envs\testvir2\lib\importlib\__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "C:\Users\stjas\Envs\testvir2\lib\site-packages\django\db\backends\mysql\base.py", line 29, in 
    raise ImproperlyConfigured("Error loading MySQLdb module: %s" % e)
django.core.exceptions.ImproperlyConfigured: Error loading MySQLdb module: No module named 'MySQLdb'

python3.6使用django出现错误No module named ‘MySQLdb’解决办法：
安装mysql驱动： pip install MySQL-python
python3.6版本无法安装！只能安装2.7版本，解决方案看下面。

(testvir2) D:\PythonCode\PycharmProjects\djangostart>pip install MySQL-python
Collecting MySQL-python
  Using cached https://files.pythonhosted.org/packages/a5/e9/51b544da85a36a68debe7a7091f068d802fc515a3a202652828c73453cad/MySQL-python-1.2.5.zip
Building wheels for collected packages: MySQL-python
  Building wheel for MySQL-python (setup.py) ... error
  Complete output from command c:\users\stjas\envs\testvir2\scripts\python.exe -u -c "import setuptools, tokenize;__file__='C:\\Users\\stjas\\AppData\\Local\\Temp\\pip-install-hzakkym1\\MySQL-python\\setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" bdist_wheel -d C:\Users\stjas\AppData\Local\Temp\pip-wheel-5cu6d7aj --python-tag cp36:
  running bdist_wheel
  running build
  running build_py
  creating build
  creating build\lib.win-amd64-3.6
  copying _mysql_exceptions.py -> build\lib.win-amd64-3.6
  creating build\lib.win-amd64-3.6\MySQLdb
  copying MySQLdb\__init__.py -> build\lib.win-amd64-3.6\MySQLdb
  copying MySQLdb\converters.py -> build\lib.win-amd64-3.6\MySQLdb
  copying MySQLdb\connections.py -> build\lib.win-amd64-3.6\MySQLdb
  copying MySQLdb\cursors.py -> build\lib.win-amd64-3.6\MySQLdb
  copying MySQLdb\release.py -> build\lib.win-amd64-3.6\MySQLdb
  copying MySQLdb\times.py -> build\lib.win-amd64-3.6\MySQLdb
  creating build\lib.win-amd64-3.6\MySQLdb\constants
  copying MySQLdb\constants\__init__.py -> build\lib.win-amd64-3.6\MySQLdb\constants
  copying MySQLdb\constants\CR.py -> build\lib.win-amd64-3.6\MySQLdb\constants
  copying MySQLdb\constants\FIELD_TYPE.py -> build\lib.win-amd64-3.6\MySQLdb\constants
  copying MySQLdb\constants\ER.py -> build\lib.win-amd64-3.6\MySQLdb\constants
  copying MySQLdb\constants\FLAG.py -> build\lib.win-amd64-3.6\MySQLdb\constants
  copying MySQLdb\constants\REFRESH.py -> build\lib.win-amd64-3.6\MySQLdb\constants
  copying MySQLdb\constants\CLIENT.py -> build\lib.win-amd64-3.6\MySQLdb\constants
  running build_ext
  building '_mysql' extension
  error: Microsoft Visual C++ 14.0 is required. Get it with "Microsoft Visual C++ Build Tools": https://visualstudio.microsoft.com/downloads/

  ----------------------------------------
  Failed building wheel for MySQL-python
  Running setup.py clean for MySQL-python
Failed to build MySQL-python
Installing collected packages: MySQL-python
  Running setup.py install for MySQL-python ... error
    Complete output from command c:\users\stjas\envs\testvir2\scripts\python.exe -u -c "import setuptools, tokenize;__file__='C:\\Users\\stjas\\AppData\\Local\\Temp\\pip-install-hzakkym1\\MySQL-python\\setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record C:\Users\stjas\AppData\Local\Temp\pip-record-ih19e2eb\install-record.txt --single-version-externally-managed --compile --install-headers c:\users\stjas\envs\testvir2\include\site\python3.6\MySQL-python:
    running install
    running build
    running build_py
    creating build
    creating build\lib.win-amd64-3.6
    copying _mysql_exceptions.py -> build\lib.win-amd64-3.6
    creating build\lib.win-amd64-3.6\MySQLdb
    copying MySQLdb\__init__.py -> build\lib.win-amd64-3.6\MySQLdb
    copying MySQLdb\converters.py -> build\lib.win-amd64-3.6\MySQLdb
    copying MySQLdb\connections.py -> build\lib.win-amd64-3.6\MySQLdb
    copying MySQLdb\cursors.py -> build\lib.win-amd64-3.6\MySQLdb
    copying MySQLdb\release.py -> build\lib.win-amd64-3.6\MySQLdb
    copying MySQLdb\times.py -> build\lib.win-amd64-3.6\MySQLdb
    creating build\lib.win-amd64-3.6\MySQLdb\constants
    copying MySQLdb\constants\__init__.py -> build\lib.win-amd64-3.6\MySQLdb\constants
    copying MySQLdb\constants\CR.py -> build\lib.win-amd64-3.6\MySQLdb\constants
    copying MySQLdb\constants\FIELD_TYPE.py -> build\lib.win-amd64-3.6\MySQLdb\constants
    copying MySQLdb\constants\ER.py -> build\lib.win-amd64-3.6\MySQLdb\constants
    copying MySQLdb\constants\FLAG.py -> build\lib.win-amd64-3.6\MySQLdb\constants
    copying MySQLdb\constants\REFRESH.py -> build\lib.win-amd64-3.6\MySQLdb\constants
    copying MySQLdb\constants\CLIENT.py -> build\lib.win-amd64-3.6\MySQLdb\constants
    running build_ext
    building '_mysql' extension
    error: Microsoft Visual C++ 14.0 is required. Get it with "Microsoft Visual C++ Build Tools": https://visualstudio.microsoft.com/downloads/

    ----------------------------------------
Command "c:\users\stjas\envs\testvir2\scripts\python.exe -u -c "import setuptools, tokenize;__file__='C:\\Users\\stjas\\AppData\\Local\\Temp\\pip-install-hzakkym1\\MySQL-python\\setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record C:\Users\stjas\AppData\Local\Temp\pip-record-ih19e2eb\install-record.txt --single-version-externally-managed --compile --install-headers c:\users\stjas\envs\testvir2\include\site\python3.6\MySQL-python" failed with error code 1 in C:\Users\stjas\AppData\Local\Temp\pip-install-hzakkym1\MySQL-python\

python3.6的版本使用新的驱动：pip install mysqlclient

(testvir2) C:\Users\stjas\Downloads\Compressed>pip install mysqlclient
Collecting mysqlclient
  Downloading https://files.pythonhosted.org/packages/c1/15/83f1444c0bbeeff9e14b0ee2cfbc985949404e325938a1b1c20adcd462ac/mysqlclient-1.4.2.post1-cp36-cp36m-win_amd64.whl (178kB)
Installing collected packages: mysqlclient
Successfully installed mysqlclient-1.4.2.post1

安装完mysqlclient库以后，在task一下：

发现可以连接数据库了!

然后通过makemigrations命令生成数据表：
然后在migrate。

然后，为URL创建映射，点击views.py，添加红框里面代码

点击urls.py，添加红框中的代码。

在回到settings.py，将TEMPLATES的DIRS改为红框中代码。
在settings.py最下方，添加STATICFILES_DIRS路径。

最后run，django

运行成功！！！

浏览器输入http://127.0.0.1:8000/form/就可以看到我们创建的留言箱了！