text: from django.contrib import admin
  from django.contrib.auth.admin import UserAdmin as DjangoUserAdmin
  from django.utils.translation import gettext_lazy as _
  
  from .models import User, Product, Campaign, Transaction, Card
  
  
  @admin.register(User)
  class UserAdmin(DjangoUserAdmin):
      fieldsets = (
          (None, {'fields': ('email', 'password')}),
          (_('Personal info'), {'fields': ('first_name', 'last_name')}),
          (_('Permissions'), {'fields': ('is_active', 'is_staff', 'is_superuser', 'groups', 'user_permissions')}),
          (_('Important dates'), {'fields': ('last_login', 'date_joined')}),
      )
      add_fieldsets = (
          (None, {
              'classes': ('wide',),
              'fields': ('email', 'password1', 'password2'),
          }),
      )
      list_display = ('email', 'first_name', 'last_name', 'date_joined', 'is_staff')
      list_filter = ('date_joined', 'is_staff', 'is_superuser', 'is_active', 'groups')
      search_fields = ('first_name', 'last_name', 'email')
      ordering = ('email',)
  
  
  admin.site.register(Product)
  admin.site.register(Card)
  admin.site.register(Campaign)
  admin.site.register(Transaction)
  