old_contents: # -*- coding: utf-8 -*-
  #
  # Copyright 2014 - StackStorm, Inc.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  # http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  from django.utils.translation import ugettext_lazy as _
  
  from horizon import tables
  
  
  def tags_to_string(workbook):
      return ', '.join(workbook.tags) if workbook.tags else None
  
  
  class WorkbooksTable(tables.DataTable):
      name = tables.Column("name", verbose_name=_("Name"))
      description = tables.Column("description", verbose_name=_("Description"))
      tags = tables.Column(tags_to_string, verbose_name=_("Tags"))
  
      def get_object_id(self, datum):
          return datum.name
  
      class Meta:
          name = "workbooks"
          verbose_name = _("Workbooks")
  
new_contents: # -*- coding: utf-8 -*-
  #
  # Copyright 2014 - StackStorm, Inc.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  # http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  from django.utils.translation import ugettext_lazy as _
  
  from horizon import tables
  from horizon.utils import filters
  
  
  def tags_to_string(workbook):
      return ', '.join(workbook.tags) if workbook.tags else None
  
  
  class WorkbooksTable(tables.DataTable):
      name = tables.Column("name", verbose_name=_("Name"))
      tags = tables.Column(tags_to_string, verbose_name=_("Tags"))
      created = tables.Column(
          "created_at",
          verbose_name=_("Created"),
          filters=(
              filters.parse_isotime,
              filters.timesince_or_never
          )
      )
      updated = tables.Column(
          "updated_at",
          verbose_name=_("Updated"),
          filters=(
              filters.parse_isotime,
              filters.timesince_or_never
          )
      )
  
      def get_object_id(self, datum):
          return datum.name
  
      class Meta:
          name = "workbooks"
          verbose_name = _("Workbooks")
  
subject: Refactor workbook table fields