Opened 7 years ago
Last modified 7 years ago
#28159 closed Bug
Fix issues with InlineFormset.save_as_new in Django 1.11 — at Initial Version
| Reported by: | Alexander Kavanaugh | Owned by: | nobody |
|---|---|---|---|
| Component: | Forms | Version: | 1.11 |
| Severity: | Release blocker | Keywords: | inlineformset, save_as_new |
| Cc: | Triage Stage: | Accepted | |
| Has patch: | yes | Needs documentation: | no |
| Needs tests: | no | Patch needs improvement: | no |
| Easy pickings: | no | UI/UX: | no |
Description
Django 1.11 now marks multipart POST data as immutable [(Release notes section)](https://docs.djangoproject.com/en/1.11/releases/1.11/#miscellaneous). This causes an issue with the private save_as_new feature in InlineFormsets: the set code in the conditional block [here](https://github.com/django/django/blob/master/django/forms/models.py#L886) now throws an AttributeError because the data it's attempting to change is marked as immutable.
To restore previous behavior, this pull request turns off the immutability flag on the form data while the save_as_new functionality runs and turns immutability back on when the mutation code is complete.
Note that the mutable flag isn't set if there is no data, hence the hasattr code.