old_contents: from django.contrib import admin
  from .models import FunContent
  
  
  class FunContentAdmin(admin.ModelAdmin):
      list_display = ('message_type', 'message', 'author')
      search_fields = ['message', 'author', ]
      list_filter = ('message_type', )
  
  admin.site.register(FunContent, FunContentAdmin)
  
new_contents: from django.contrib import admin
  from .models import FunContent
  
  
  class FunContentAdmin(admin.ModelAdmin):
      list_display = ('message_type', 'message', 'author')
      search_fields = ['message', 'author', ]
      list_filter = ('message_type', 'author',)
  
  admin.site.register(FunContent, FunContentAdmin)
  
subject: include autors in the admin list_filter