python - RemovedInDjango19警告：模型未声明显式 app_label

Question

经历过

Django 1.9 弃用警告 app_label

但答案无法解决我的问题，所以再次询问。

我有一个在设置中添加到 INSTALLED_APPS 的应用程序。

每当我跑步时manage.py runserver，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):

我的应用程序中的代码，

信号.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

应用程序.py

from django.apps import AppConfig

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

初始化文件

import signals

default_app_config = 'catalog.apps.WhosConfig'

Python 2.7.8上的 Django 版本 1.8.2

Answer 1

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

Answer 2

您在应用配置运行之前导入models.py 。

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

像这样：

信号.py

def someSignal(sender, **kwargs):
    pass

应用程序.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')
        )

您可能需要检查文档中的就绪方法