Ticket #12481: rofv1.diff

django/contrib/admin/validation.py

@@ -240 +240 @@
                 if type(fields) != tuple:
                     fields = (fields,)
                 for field in fields:
+                    if field in cls.readonly_fields:
+                        # Stuff can be put in fields that isn't actually a model field
+                        # if it's in readonly_fields, readonly_fields will handle the
+                        # validation of such things.
+                        continue
                     check_formfield(cls, model, opts, "fieldsets[%d][1]['fields']" % idx, field)
                     try:
                         f = opts.get_field(field)