RemovedInDjango19Warning：模型未声明显式 app_label

Question

已经历

但是答案无法解决我的问题，所以再问一次。

我有一个应用已添加到 INSTALLED_APPS 的设置中。

每当我运行 manage.py runserver，我都会收到此警告，

[trimmed path to project]/catalog/models.py:9: RemovedInDjango19Warning: Model class catalog.models.Category doesn't declare an explicit app_label and either isn't in an application in INSTALLED_APPS or else was imported before its application was loaded. This will no longer be supported in Django 1.9.
  class Category(models.Model):

来自我的应用程序的代码，

signals.py

from django.db.models.signals import post_save
from django.dispatch import receiver
from models import Category

@receiver(post_save, sender=Category)
def someSignal(sender, **kwargs):
    pass

apps.py

from django.apps import AppConfig

class CatalogConfig(AppConfig):
    name = 'catalog'
    verbose_name = 'Catalogue'

init.py

import signals

default_app_config = 'catalog.apps.WhosConfig'

Django 版本 1.8.2 Python 2.7.8

Answer 1

您正在导入 models.py，然后再配置应用运行。

要修复它，您可以在 CatalogConfig.ready 方法中导入和配置信号。

像这样：

signals.py

def someSignal(sender, **kwargs):
    pass

apps.py

from django.apps import AppConfig
from django.db.models.signals import post_save


class CatalogConfig(AppConfig):
    name = 'catalog'
    verbose_name = 'Catalogue'

    def ready(self):
        from .signals import someSignal
        post_save.connect(
            receiver=someSignal,
            sender=self.get_model('Category')
        )

您可能需要检查准备方法 in documentation

Answer 2

我在运行测试时遇到了这个问题，这只是一个改变的问题：

from .models import MyModel

至

from apps.myapp.models import MyModel

RemovedInDjango19Warning：模型未声明显式 app_label

RemovedInDjango19Warning: Model doesn't declare an explicit app_label

python

django

django-signals

django-apps

deprecation-warning