text: # -*- coding: utf-8 -*-
  from __future__ import absolute_import, unicode_literals
  from django.utils.html import format_html
  from .database_maintenance_task import DatabaseMaintenanceTaskAdmin
  
  
  class DatabaseChangeParameterAdmin(DatabaseMaintenanceTaskAdmin):
  
      def maintenance_action(self, maintenance_task):
          if (not maintenance_task.is_status_error or
                  not maintenance_task.can_do_retry):
              return 'N/A'
  
          url = maintenance_task.database.get_change_parameters_retry_url()
          html = ("<a title='Retry' class='btn btn-info' "
                  "href='{}'>Retry</a>").format(url)
          return format_html(html)
  