dashboard: issue 94 server-side

circle/dashboard/forms.py

@@ -487,6 +487,16 @@ class TemplateForm(forms.ModelForm):
             return User.objects.get(pk=self.instance.owner.pk)
         return self.user
 
+    def clean(self):
+        cleaned_data = self.cleaned_data
+        # if raw_data has changed and the user is not superuser
+        if "raw_data" in self.changed_data and not self.user.is_superuser:
+            old_raw_data = InstanceTemplate.objects.get(
+                pk=self.instance.pk).raw_data
+            cleaned_data['raw_data'] = old_raw_data
+
+        return cleaned_data
+
     def save(self, commit=True):
         data = self.cleaned_data
         self.instance.max_ram_size = data.get('ram_size')