Django - 指定Django管理员应该使用哪个模型管理员 [英] Django - specify which model manager Django admin should use

问题描述

我为Django模型创建了一个自定义管理器，该模型返回一个包含objects.all（）的子集的QuerySet。我需要这个作为模型的默认管理器，因为我还创建一个自定义标签，它将从任何模型（由参数指定）检索内容，并且需要使用指定模型的默认管理器。除了 - Django管理员还使用此特定模型的默认管理器，这意味着并不是所有的模型实例都显示在管理员中。

I've created a custom Manager for a Django model which returns a QuerySet holding a subset of objects.all(). I need this to be the model's default Manager, since I am also creating a custom tag which will retrieve content from any model (specified by an argument), and needs to use the default Manager for the specified model. All that works fine, except - Django Admin is ALSO using the default Manager for this particular model, which means that not all model instances appear in the admin.

Django文档不要帮助：

The Django docs don't help:

如果您使用自定义管理对象，请注意，第一个经理Django遇到（在
中的顺序它们在模型中定义）具有特殊状态。 Django将此类中定义的第一个管理器解释为默认管理器，并且Django的几个部分（，而不是管理应用程序）将专门为该模型使用该Manager。
（Django Managers文档）

If you use custom Manager objects, take note that the first Manager Django encounters (in the order in which they're defined in the model) has a special status. Django interprets this first Manager defined in a class as the "default" Manager, and several parts of Django (though not the admin application) will use that Manager exclusively for that model. (Django Managers documentation)

管理员不应该使用默认管理器，但似乎在我的情况。请注意，我还明确添加了默认管理器对象：

The admin isn't supposed to use the default Manager, but it seems to be in my case. Note that I have also explicitly add the default Manager objects:

subset = CustomManager() # the default manager
objects = models.Manager() # the one I want admin to use

如何指定管理员应该使用哪个管理员？

How can I specify which Manager the admin should use?

推荐答案

您可以通过覆盖

def get_queryset(self, request):
    # use our manager, rather than the default one
    qs = self.model.objects.get_queryset()

    # we need this from the superclass method
    ordering = self.ordering or () # otherwise we might try to *None, which is bad ;)
    if ordering:
        qs = qs.order_by(*ordering)
    return qs

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