一旦用户注册，如何通过django-admin面板批准或拒绝用户？

from django.contrib import admin
from django.contrib.auth.admin import UserAdmin
from django.contrib.auth.models import User
from django.urls import reverse
from django.utils.html import format_html

class CustomUserAdmin(UserAdmin):
    list_display = ('username', 'email', 'is_active', 'approve_or_reject')

    def approve_or_reject(self, obj):
        if obj.is_active:
            return format_html('<a href="{}">Reject</a>', reverse('admin:reject_user', args=[obj.id]))
        else:
            return format_html('<a href="{}">Approve</a>', reverse('admin:approve_user', args=[obj.id]))

    approve_or_reject.short_description = 'Approve/Reject'

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

from django.urls import path
from . import views

urlpatterns = [
    # ...
    path('admin/approve/<int:user_id>/', views.approve_user, name='approve_user'),
    path('admin/reject/<int:user_id>/', views.reject_user, name='reject_user'),
]

from django.shortcuts import redirect, get_object_or_404
from django.contrib.auth.models import User

def approve_user(request, user_id):
    user = get_object_or_404(User, id=user_id)
    user.is_active = True
    user.save()
    return redirect('admin:auth_user_changelist')

def reject_user(request, user_id):
    user = get_object_or_404(User, id=user_id)
    user.delete()
    return redirect('admin:auth_user_changelist')