如何在 Django Admin 中更改 ForeignKey 显示文本? [英] How to change ForeignKey display text in the Django Admin?

问题描述

如何在选择 ForeignKey 字段时更改 <select> 字段中的显示文本?

How can I change the display text in a <select> field while selecting a field which is a ForeignKey?

我不仅需要显示 ForeignKey 的名称，还需要显示其父项的名称.

I need to display not only the name of ForeignKey, but also the name of it's parent.

推荐答案

如果你希望它只在 admin 中生效，而不是全局生效，那么你可以创建一个自定义的 ModelChoiceField 子类，使用它在自定义 ModelForm 中，然后设置相关的管理类以使用您的自定义表单.使用一个示例，该示例具有 @Enrique 使用的 Person 模型的 ForeignKey:

If you want it to take effect only in admin, and not globally, then you could create a custom ModelChoiceField subclass, use that in a custom ModelForm and then set the relevant admin class to use your customized form. Using an example which has a ForeignKey to the Person model used by @Enrique:

class Invoice(models.Model):
      person = models.ForeignKey(Person)
      ....

class InvoiceAdmin(admin.ModelAdmin):
      form = MyInvoiceAdminForm


class MyInvoiceAdminForm(forms.ModelForm):
    person = CustomModelChoiceField(queryset=Person.objects.all()) 
    class Meta:
          model = Invoice
      
class CustomModelChoiceField(forms.ModelChoiceField):
     def label_from_instance(self, obj):
         return "%s %s" % (obj.first_name, obj.last_name)

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