old_contents: from django.contrib import admin
  
  from django_monitor.admin import MonitorAdmin
  
  from .models import StewardNotification, StewardProject
  
  
  class StewardNotificationAdmin(MonitorAdmin):
      list_display = ('pk', 'name',)
  
  
  class StewardProjectAdmin(admin.ModelAdmin):
      list_display = ('pk', 'name', 'organizer', 'use',)
  
  
  admin.site.register(StewardNotification, StewardNotificationAdmin)
  admin.site.register(StewardProject, StewardProjectAdmin)
  
new_contents: from django.contrib import admin
  
  from django_monitor.admin import MonitorAdmin
  
  from .models import StewardNotification, StewardProject
  
  
  class StewardNotificationAdmin(MonitorAdmin):
      list_display = ('pk', 'name',)
  
  
  class StewardProjectAdmin(admin.ModelAdmin):
      list_display = ('pk', 'name', 'address', 'organizer', 'use',)
  
      def address(self, obj):
          try:
              return obj.content_object.address_line1
          except Exception:
              return ''
  
  
  admin.site.register(StewardNotification, StewardNotificationAdmin)
  admin.site.register(StewardProject, StewardProjectAdmin)
  
subject: Address in admin