{"error": "Traceback (most recent call last):\n  File \"./utils/shortcuts.py\", line 181, in wrapper\n    response = func(request, *args, **kwargs)\n  File \"./shop/views_ajax.py\", line 35, in add_article\n    article = get_object_or_404(Article, id=article_id)\n  File \"/usr/lib/python2.6/dist-packages/django/shortcuts/__init__.py\", line 115, in get_object_or_404\n    raise Http404('No %s matches the given query.' % queryset.model._meta.object_name)\nHttp404: No Article matches the given query.\n"}