Django admin -如何添加request.user作为内联模型的默认值？

from django.contrib import admin
from django.contrib.auth.models import User
from django.contrib.auth.admin import UserAdmin
from django.contrib.auth.admin import UserAdmin as BaseUserAdmin
from django.contrib.auth.forms import UserChangeForm, UserCreationForm
from django.contrib.auth.admin import UserAdmin as BaseUserAdmin
from django.contrib.auth.models import User
from django.contrib.auth.admin import UserAdmin as BaseUserAdmin
from django.contrib.auth.forms import UserChangeForm, UserCreationForm
from django import forms
from django.contrib.auth.admin import UserAdmin as BaseUserAdmin
from django.contrib.auth.models import User
from django.contrib.auth.admin import UserAdmin as BaseUserAdmin
from django.contrib.auth.forms import UserChangeForm, UserCreationForm
from django import forms

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

    def __init__(self, *args, **kwargs):
        super(MyUserChangeForm, self).__init__(*args, **kwargs)
        self.fields['request_user'] = forms.CharField(required=False, widget=forms.HiddenInput())

class MyUserAdmin(BaseUserAdmin):
    form = MyUserChangeForm

    def get_form(self, request, obj=None, **kwargs):
        form = super(MyUserAdmin, self).get_form(request, obj, **kwargs)
        form.request_user = request.user
        return form

admin.site.unregister(User)
admin.site.register(User, MyUserAdmin)