text: from django.contrib import admin
  from cronjobs.models import CronLog
  
  class CronLogAdmin(admin.ModelAdmin):
      readonly_fields = ('timestamp', 'app_label', 'name', 'success', 'exception_message', 'duration',)
      list_display = ('timestamp', 'app_label', 'name', 'success',)
      list_filter = ('app_label', 'name', 'success',)
      
      def has_add_permission(self, *args, **kwargs):
          return False
      has_delete_permission = has_add_permission
      
  admin.site.register(CronLog, CronLogAdmin)