Replace space with underscore in links to uploaded files

Where does the space to underscore conversion come from?
- Not slugify, as that is not used
- Not default_storage, as the url method there only replaces dos-slashes

Just using simple string replacement until this is better understood.

Author: sigurdga

fileupload/views.py

@@ -19,7 +19,7 @@ class PictureCreateView(CreateView):
     def form_valid(self, form):
         self.object = form.save()
         f = self.request.FILES.get('file')
-        data = [{'name': f.name, 'url': settings.MEDIA_URL + "pictures/" + f.name, 'thumbnail_url': settings.MEDIA_URL + "pictures/" + f.name, 'delete_url': reverse('upload-delete', args=[self.object.id]), 'delete_type': "DELETE"}]
+        data = [{'name': f.name, 'url': settings.MEDIA_URL + "pictures/" + f.name.replace(" ", "_"), 'thumbnail_url': settings.MEDIA_URL + "pictures/" + f.name.replace(" ", "_"), 'delete_url': reverse('upload-delete', args=[self.object.id]), 'delete_type': "DELETE"}]
         response = JSONResponse(data, {}, response_mimetype(self.request))
         response['Content-Disposition'] = 'inline; filename=files.json'
         return response