Ticket #17417: 17417__fixed_implementation.patch

django/contrib/admin/options.py

@@ -1190 +1190 @@
         if obj is None:
             raise Http404(_('%(name)s object with primary key %(key)r does not exist.') % {'name': force_text(opts.verbose_name), 'key': escape(object_id)})
 
-        if request.method == 'POST' and "_saveasnew" in request.POST:
-            return self.add_view(request, form_url=reverse('admin:%s_%s_add' %
-                                    (opts.app_label, opts.model_name),
-                                    current_app=self.admin_site.name))
-
         ModelForm = self.get_form(request, obj)
         formsets = []
         inline_instances = self.get_inline_instances(request, obj)
         if request.method == 'POST':
             form = ModelForm(request.POST, request.FILES, instance=obj)
             if form.is_valid():
+                if "_saveasnew" in request.POST:
+                    return self.add_view(request, form_url=reverse('admin:%s_%s_add' %
+                                    (opts.app_label, opts.model_name),
+                                    current_app=self.admin_site.name))
+
                 form_validated = True
                 new_object = self.save_form(request, form, change=True)
             else: