Question

要在管理add页中添加一个额外的字段，以下代码将起作用：

models.py：

class Parent(models.Model):
    pass


class Child(models.Model):
    parent = models.ForeignKey(Parent, on_delete=models.PROTECT)

forms.py：

class ChildForm(forms.ModelForm):
    extra_field = forms.CharField()

    class Meta:
        model = Child
        fields = '__all__'

admin.py：

@admin.register(models.Child)
class ChildAdmin(admin.ModelAdmin):
    form = forms.ChildForm

如何在Child Parent页中Parent是add的内联时添加相同的额外字段？

以下admin.py：

class ChildInline(admin.TabularInline):
    model = models.Child
    form = forms.ChildForm


@admin.register(models.Parent)
class ParentAdmin(admin.ModelAdmin):
    inlines = (ChildInline,)

导致：

Traceback (most recent call last):
  File "django/db/models/options.py", line 617, in get_field
    return self.fields_map[field_name]
KeyError: 'extra_field'

...

django.core.exceptions.FieldDoesNotExist: Child has no field named 'extra_field'

...

AttributeError: Unable to lookup 'extra_field' on Child or ChildInline

Answer 1

根据this answer，添加标签，可使内联按预期工作：

class ChildForm(forms.ModelForm):
    extra_field = forms.CharField(label='Extra Field')

    class Meta:
        model = Child
        fields = '__all__'

相关票证：https://code.djangoproject.com/ticket/30520#ticket

没有标签的ModelForm的额外字段，不会在InlineModelAdmin中呈现

1 个答案: