dashboard: fix wrong content type for ajax requests

closes #435

circle/dashboard/views/util.py

@@ -30,7 +30,9 @@ from django.core.urlresolvers import reverse
 from django.contrib import messages
 from django.contrib.auth.views import redirect_to_login
 from django.db.models import Q
-from django.http import HttpResponse, Http404, HttpResponseRedirect
+from django.http import (
+    HttpResponse, Http404, HttpResponseRedirect, JsonResponse
+)
 from django.shortcuts import redirect, render
 from django.utils.translation import ugettext_lazy as _, ugettext_noop
 from django.views.generic import DetailView, View, DeleteView
@@ -343,12 +345,9 @@ class AjaxOperationMixin(object):
                 store.used = True
             else:
                 store = []
-            return HttpResponse(
-                json.dumps({'success': True,
-                            'with_reload': self.with_reload,
-                            'messages': [unicode(m) for m in store]}),
-                content_type="application=json"
-            )
+            return JsonResponse({'success': True,
+                                 'with_reload': self.with_reload,
+                                 'messages': [unicode(m) for m in store]})
         else:
             return resp
 
@@ -378,11 +377,8 @@ class FormOperationMixin(object):
             resp = super(FormOperationMixin, self).post(
                 request, extra, *args, **kwargs)
             if request.is_ajax():
-                return HttpResponse(
-                    json.dumps({
-                        'success': True,
-                        'with_reload': self.with_reload}),
-                    content_type="application=json")
+                return JsonResponse({'success': True,
+                                     'with_reload': self.with_reload})
             else:
                 return resp
         else:

circle/dashboard/views/vm.py

@@ -28,7 +28,9 @@ from django.contrib.auth.decorators import login_required
 from django.core import signing
 from django.core.exceptions import PermissionDenied, SuspiciousOperation
 from django.core.urlresolvers import reverse, reverse_lazy
-from django.http import HttpResponse, Http404, HttpResponseRedirect
+from django.http import (
+    HttpResponse, Http404, HttpResponseRedirect, JsonResponse
+)
 from django.shortcuts import redirect, get_object_or_404
 from django.template import RequestContext
 from django.template.loader import render_to_string
@@ -274,10 +276,7 @@ class VmDetailView(GraphMixin, CheckedDetailView):
             message = u"Not success"
 
         if request.is_ajax():
-            return HttpResponse(
-                json.dumps({'message': message}),
-                content_type="application=json"
-            )
+            return JsonResponse({'message': message})
         else:
             return redirect(reverse_lazy("dashboard.views.detail",
                             kwargs={'pk': self.object.pk}))
@@ -563,11 +562,8 @@ class VmResourcesChangeView(VmOperationView):
             if request.is_ajax():  # this is not too nice
                 store = messages.get_messages(request)
                 store.used = True
-                return HttpResponse(
-                    json.dumps({'success': False,
-                                'messages': [unicode(m) for m in store]}),
-                    content_type="application=json"
-                )
+                return JsonResponse({'success': False,
+                                     'messages': [unicode(m) for m in store]})
             else:
                 return HttpResponseRedirect(instance.get_absolute_url() +
                                             "#resources")