user bulk import through Excel and close #20

apps/common/mixins.py

@@ -1,6 +1,7 @@
 # coding: utf-8
 
 from django.db import models
+from django.http import JsonResponse
 from django.utils.timezone import now
 from django.utils.translation import ugettext_lazy as _
 
@@ -36,3 +37,11 @@ class NoDeleteModelMixin(models.Model):
         self.is_discard = True
         self.discard_time = now()
         return self.save()
+
+
+class JSONResponseMixin(object):
+
+    """JSON mixin"""
+
+    def render_json_response(self, context):
+        return JsonResponse(context)