old_contents: """Admin classes for the ``multilingual_event`` app."""
  from django.contrib import admin
  from django.utils.translation import ugettext_lazy as _
  
  from hvad.admin import TranslatableAdmin
  
  from .models import Event, EventCategory
  
  
  class EventCategoryAdmin(TranslatableAdmin):
      """Admin class for the ``EventCategory`` model."""
      list_display = ['get_title', 'all_translations', ]
  
      def get_title(self, obj):
          return obj.title
      get_title.short_description = _('Title')
  
  
  class EventAdmin(TranslatableAdmin):
      """Admin class for the ``Event`` model."""
      list_display = ['get_title', 'start_date', 'user', 'all_translations',
                      'get_is_published']
  
      def get_title(self, obj):
          return obj.title
      get_title.short_description = _('Title')
  
      def get_is_published(self, obj):
          return obj.is_published
      get_is_published.short_description = _('Is published')
      get_is_published.boolean = True
  
  
  admin.site.register(Event, EventAdmin)
  admin.site.register(EventCategory, EventCategoryAdmin)
  
new_contents: """Admin classes for the ``multilingual_event`` app."""
  from django.contrib import admin
  from django.utils.translation import ugettext_lazy as _
  
  from hvad.admin import TranslatableAdmin
  
  from .models import Event, EventCategory
  
  
  class EventCategoryAdmin(TranslatableAdmin):
      """Admin class for the ``EventCategory`` model."""
      list_display = ['get_title', 'all_translations', ]
      list_select_related = []
  
      def get_title(self, obj):
          return obj.title
      get_title.short_description = _('Title')
  
  
  class EventAdmin(TranslatableAdmin):
      """Admin class for the ``Event`` model."""
      list_display = ['get_title', 'start_date', 'user', 'all_translations',
                      'get_is_published']
      list_select_related = []
  
      def get_title(self, obj):
          return obj.title
      get_title.short_description = _('Title')
  
      def get_is_published(self, obj):
          return obj.is_published
      get_is_published.short_description = _('Is published')
      get_is_published.boolean = True
  
  
  admin.site.register(Event, EventAdmin)
  admin.site.register(EventCategory, EventCategoryAdmin)
  
subject: Update admin.py