old_contents: """Django admin configuration for days models."""
  from django.contrib import admin
  
  from days.apps.days.models import Event
  
  
  @admin.register(Event)
  class EventAdmin(admin.ModelAdmin):
      """Admin config for the Event model."""
      list_display = ('date', 'description', 'created', 'modified')
      search_fields = ('description',)
      show_full_result_count = False
  
      fields = ('date', 'description', 'created', 'modified')
      readonly_fields = ('created', 'modified')
  
new_contents: """Django admin configuration for days models."""
  from django.contrib import admin
  
  from days.apps.days.models import Event, Subscriber
  
  
  @admin.register(Event)
  class EventAdmin(admin.ModelAdmin):
      """Admin config for the Event model."""
      list_display = ('date', 'description', 'created', 'modified')
      search_fields = ('description',)
      show_full_result_count = False
  
      fields = ('date', 'description', 'created', 'modified')
      readonly_fields = ('created', 'modified')
  
  
  @admin.register(Subscriber)
  class SubscriberAdmin(admin.ModelAdmin):
      """Admin config for the Subscriber model."""
      list_display = ('email', 'created', 'modified')
      search_fields = ('email',)
      show_full_result_count = False
  
      fields = ('email', 'created', 'modified')
      readonly_fields = ('created', 'modified')
  
subject: Add Subscriber admin