text: # -*- coding: utf-8 -*-
  
  # Copyright 2017,  Digital Reasoning
  #
  # 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 __future__ import unicode_literals
  
  from stackdio.api.stacks import models
  from stackdio.core.mixins import ParentRelatedMixin
  from stackdio.core.permissions import StackdioPermissionsPermissions
  
  
  class StackRelatedMixin(ParentRelatedMixin):
      parent_queryset = models.Stack.objects.all()
  
      def get_stack(self):
          return self.get_parent_object()
  
  
  class StackPermissionsMixin(StackRelatedMixin):
      permission_classes = (StackdioPermissionsPermissions,)
  
      def get_permissioned_object(self):
          return self.get_parent_object()
  