dashboard: handle wrong inputs for vmforms

circle/dashboard/static/dashboard/vm-common.js

@@ -30,4 +30,40 @@ $(function() {
     });
     return false;
   });
+
+  /* if the operation fails show the modal again */
+  $("body").on("click", "#op-form-send", function() {
+    var url = $(this).closest("form").prop("action");
+    $.ajax({
+      url: url,
+      headers: {"X-CSRFToken": getCookie('csrftoken')},
+      type: 'POST',
+      data: $(this).closest('form').serialize(),
+      success: function(data, textStatus, xhr) {
+        var r = $('#confirmation-modal'); r.next('div').remove(); r.remove();
+
+        if(data.redirect) {
+            $('a[href="#activity"]').trigger("click");
+        }
+        else {
+            $('body').append(data);
+            $('#confirmation-modal').modal('show');
+            $('#confirmation-modal').on('hidden.bs.modal', function() {
+                $('#confirmation-modal').remove();
+            });
+        }
+      },
+      error: function(xhr, textStatus, error) {
+        var r = $('#create-modal'); r.next('div').remove(); r.remove();
+        
+        if (xhr.status == 500) {
+          addMessage("500 Internal Server Error", "danger");
+        } else {
+          addMessage(xhr.status + " Unknown Error", "danger");
+        }
+      }
+    });
+    return false;
+  });
+
 });

circle/dashboard/templates/dashboard/operate.html

@@ -19,6 +19,10 @@ Do you want to do the following operation on {{obj}}:
   <div class="pull-right">
     <a class="btn btn-default" href="{{object.get_absolute_url}}"
         data-dismiss="modal">{% trans "Cancel" %}</a>
-      <button class="btn btn-danger" type="submit">{% if op.icon %}<i class="icon-{{op.icon}}"></i> {% endif %}{{ op|capfirst }}</button>
+      <button class="btn btn-danger" type="submit"
+        {% if form %}id="op-form-send"{% endif %}
+        >
+        {% if op.icon %}<i class="icon-{{op.icon}}"></i> {% endif %}{{ op|capfirst }}
+      </button>
   </div>
 </form>

circle/dashboard/views.py

@@ -592,8 +592,15 @@ class FormOperationMixin(object):
         form = self.form_class(self.request.POST)
         if form.is_valid():
             extra.update(form.cleaned_data)
-            return super(FormOperationMixin, self).post(
+            resp = super(FormOperationMixin, self).post(
                 request, extra, *args, **kwargs)
+            if request.is_ajax():
+                return HttpResponse(
+                    json.dumps({'redirect': resp.url}),
+                    content_type="application=json"
+                )
+            else:
+                return resp
         else:
             return self.get(request)