我想使用Django rest框架在python中声明新的应用程序。你知道吗
首先我做了以下步骤:
cmd>django-admin startproject djrest .
cmd>cd djrest
cmd>django-admin startapp sarox
cmd>cd..
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.mysql',
'NAME': 'sarox',
'USER': 'root',
'PASSWORD': '*******',
'HOST': 'localhost',
'PORT': '****',
}
}
cmd>python manage.py migrate
cmd>python manage.py createsuperuser
cmd>py manage.py runserver 0.0.0.0:2281
然后我在Sarox_models.py
目录下的sarox
中声明了一个模型:
from django.db import models
class SaroxUsers(models.Model):
user_id = models.AutoField(db_column='User_id', primary_key=True) # Field name made lowercase.
salt = models.CharField(db_column='Salt', max_length=200, blank=True, null=True) # Field name made lowercase.
hash = models.CharField(db_column='Hash', max_length=200, blank=True, null=True) # Field name made lowercase.
username = models.CharField(db_column='Username', unique=True, max_length=15) # Field name made lowercase.
class Meta:
managed = False
db_table = 'sarox_users'
然后我在sarox
目录下的views.py
中添加了以下行:
from djrest.sarox.Sarox_models import SaroxUsers
然后在INSTALLED_APPS
配置类的settings.py
文件中创建一行。你知道吗
这是我的INSTALLED_APPS
配置类:
INSTALLED_APPS = [
'sarox.apps.SaroxConfig',
...
]
我的新应用在sarox/apps.py
中声明如下
from django.apps import AppConfig
class SaroxConfig(AppConfig):
name = 'sarox'
但是当我运行python manage.py runserver 0.0.0.0:2281
命令时,它会引发一个运行时错误:
E:\MyApps\Plot\djrest>python manage.py runserver 0.0.0.0:2281
Watching for file changes with StatReloader
Exception in thread django-main-thread:
Traceback (most recent call last):
File "C:\Users\AMoha\AppData\Local\Programs\Python\Python37\lib\threading.py", line 926, in _bootstrap_inner
self.run()
File "C:\Users\AMoha\AppData\Local\Programs\Python\Python37\lib\threading.py", line 870, in run
self._target(*self._args, **self._kwargs)
File "C:\Users\AMoha\AppData\Local\Programs\Python\Python37\lib\site-packages\django\utils\autoreload.py", line 54, in wrapper
fn(*args, **kwargs)
File "C:\Users\AMoha\AppData\Local\Programs\Python\Python37\lib\site-packages\django\core\management\commands\runserver.py", line 109, in inner_run
autoreload.raise_last_exception()
File "C:\Users\AMoha\AppData\Local\Programs\Python\Python37\lib\site-packages\django\utils\autoreload.py", line 77, in raise_last_exception
raise _exception[1]
File "C:\Users\AMoha\AppData\Local\Programs\Python\Python37\lib\site-packages\django\core\management\__init__.py", line 337, in execute
autoreload.check_errors(django.setup)()
File "C:\Users\AMoha\AppData\Local\Programs\Python\Python37\lib\site-packages\django\utils\autoreload.py", line 54, in wrapper
fn(*args, **kwargs)
File "C:\Users\AMoha\AppData\Local\Programs\Python\Python37\lib\site-packages\django\__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "C:\Users\AMoha\AppData\Local\Programs\Python\Python37\lib\site-packages\django\apps\registry.py", line 91, in populate
app_config = AppConfig.create(entry)
File "C:\Users\AMoha\AppData\Local\Programs\Python\Python37\lib\site-packages\django\apps\config.py", line 116, in create
mod = import_module(mod_path)
File "C:\Users\AMoha\AppData\Local\Programs\Python\Python37\lib\importlib\__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
File "<frozen importlib._bootstrap>", line 983, in _find_and_load
File "<frozen importlib._bootstrap>", line 953, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
File "<frozen importlib._bootstrap>", line 983, in _find_and_load
File "<frozen importlib._bootstrap>", line 965, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'sarox'
...
当我删除settings.py
的INSTALLED_APPS
类配置中包含'sarox.apps.SaroxConfig',
的新行时,一切都正常了。你知道吗
我的项目目录结构如下:
你知道吗?你知道吗
djrest
不是您的根目录,而是“project”目录(Django查找设置、根url等的目录),因此当前指向“sarox”包的python路径不是sarox
,而是djrest.sarox
。你知道吗这就是说,你的应用程序不应该存在于这个目录中,它们应该直接位于根目录中,与
djrest
和manage.py
处于同一级别,因此正确的解决方案是让你的settings.INSTALLED_APPS
单独存在,并将整个sarox目录向上移动一级。你知道吗此外,Django希望您的模型模块命名为“型号.py不是Sarox_型号.py,因此您也必须修复此问题(重命名模块并修复所有导入),才能使应用程序正常工作。你知道吗
正如其他人已经提到的,使用Django的
startapp
管理命令可以在正确的位置创建正确的应用程序目录结构,从而避免所有这些麻烦。你知道吗你没有用Django的
startapp
命令吗?不过,我确实认为您应该检查__init__.py
文件夹下是否有sarox
文件。你知道吗您可以使用python命令在django中启动一个新的应用程序管理.py开始输入你的应用程序名。之后,您就可以使用drf定义视图和序列化程序了。你知道吗
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