Added Conflict APIException

Author: jsenecal

rest_framework_json_api/exceptions.py

@@ -1,6 +1,9 @@
-
-from django.utils import six, encoding
+from django.utils import encoding
+from django.utils.translation import ugettext_lazy as _
+from rest_framework import status
+from rest_framework.exceptions import APIException
 from rest_framework.views import exception_handler as drf_exception_handler
+
 from rest_framework_json_api.utils import format_value
 
 
@@ -39,3 +42,8 @@ def exception_handler(exc, context):
     context['view'].resource_name = 'errors'
     response.data = errors
     return response
+
+
+class Conflict(APIException):
+    status_code = status.HTTP_409_CONFLICT
+    default_detail = _('Conflict.')