old_contents: # -*- coding: utf-8 -*-
  from __future__ import absolute_import, unicode_literals
  from rest_framework import viewsets, serializers
  from physical import models
  
  
  class EnvironmentSerializer(serializers.HyperlinkedModelSerializer):
  
      class Meta:
          model = models.Environment
          fields = ('url', 'id', 'name',)
  
  
  class EnvironmentAPI(viewsets.ReadOnlyModelViewSet):
  
      """
      Environment API
      """
      serializer_class = EnvironmentSerializer
      queryset = models.Environment.objects.all()
  
new_contents: # -*- coding: utf-8 -*-
  from __future__ import absolute_import, unicode_literals
  from rest_framework import viewsets, serializers
  from physical.models import Environment
  
  
  class EnvironmentSerializer(serializers.HyperlinkedModelSerializer):
  
      class Meta:
          model = Environment
          fields = ('url', 'id', 'name', 'stage', 'provisioner')
  
  
  class EnvironmentAPI(viewsets.ReadOnlyModelViewSet):
  
      """
      Environment API
      """
      model = Environment
      serializer_class = EnvironmentSerializer
      queryset = Environment.objects.all()
      filter_fields = (
          'id',
          'name',
          'stage',
          'provisioner'
      )
  
      def get_queryset(self):
          params = self.request.GET.dict()
          filter_params = {}
          for k, v in params.iteritems():
              if k == 'get_provisioner_by_label':
                  if hasattr(self.model, v.upper()):
                      label_id = getattr(self.model, v.upper())
                      filter_params['provisioner'] = label_id
                  else:
                      return self.model.objects.none()
              elif k.split('__')[0] in self.filter_fields:
                  filter_params[k] = v
          return self.model.objects.filter(**filter_params)
  
subject: Add povisioner and stage on env API