Using Django auth UserAdmin for a custom user model

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After digging around the Django source code for a while, I found a working soultion. I am not totally happy with this solution, but it seems to work. Feel free to suggest better solutions!

Django uses UserAdmin to render the nice admin look for User model. By just using this in our admin.py-file, we can get the same look for our model.

from django.contrib.auth.admin import UserAdmin
admin.site.register(MyUser, UserAdmin)

However, this alone is probably not a good solution, since Django Admin will not display any of your special fields. There are two reasons for this:

  • UserAdmin uses UserChangeForm as the form to be used when modifying the object, which in its turn uses User as its model.
  • UserAdmin defines a formsets-property, later used by UserChangeForm, which does not include your special fields.

So, I created a special change-form which overloads the Meta inner-class so that the change form uses the correct model. I also had to overload UserAdmin to add my special fields to the fieldset, which is the part of this solution I dislike a bit, since it looks a bit ugly. Feel free to suggest improvements!

from django.contrib.auth.admin import UserAdmin
from django.contrib.auth.forms import UserChangeForm

class MyUserChangeForm(UserChangeForm):
    class Meta(UserChangeForm.Meta):
        model = MyUser

class MyUserAdmin(UserAdmin):
    form = MyUserChangeForm

    fieldsets = UserAdmin.fieldsets + (
            (None, {'fields': ('some_extra_data',)}),
    )


admin.site.register(MyUser, MyUserAdmin)

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