old_contents: from django.contrib import admin
  
  from comics.core import models
  
  class ComicAdmin(admin.ModelAdmin):
      list_display = ('name', 'language', 'slug', 'url', 'time_zone', 'rights')
      prepopulated_fields = {
          'slug': ('name',)
      }
  
  class ReleaseAdmin(admin.ModelAdmin):
      list_display = ('comic', 'pub_date')
      list_filter = ['comic', 'pub_date']
      date_hierarchy = 'pub_date'
  
  class StripAdmin(admin.ModelAdmin):
      list_display = ('comic', 'title', 'fetched')
      list_filter = ['comic', 'fetched']
  
  admin.site.register(models.Comic, ComicAdmin)
  admin.site.register(models.Release, ReleaseAdmin)
  admin.site.register(models.Strip, StripAdmin)
  
new_contents: from django.contrib import admin
  
  from comics.core import models
  
  class ComicAdmin(admin.ModelAdmin):
      list_display = ('name', 'language', 'slug', 'url', 'time_zone', 'rights')
      prepopulated_fields = {
          'slug': ('name',)
      }
  
  class ReleaseAdmin(admin.ModelAdmin):
      list_display = ('comic', 'pub_date')
      list_filter = ['comic', 'pub_date']
      date_hierarchy = 'pub_date'
  
  class StripAdmin(admin.ModelAdmin):
      list_display = ('comic', 'title', 'fetched')
      list_filter = ['comic', 'fetched']
  
      date_hierarchy = 'fetched'
  
  admin.site.register(models.Comic, ComicAdmin)
  admin.site.register(models.Release, ReleaseAdmin)
  admin.site.register(models.Strip, StripAdmin)
  
subject: Update admin with date_hierarchy