#29474: BaseInlineFormset.save_new() more complicated than it needs to be? ------------------------------------------------+------------------------ Reporter: ljsjl | Owner: nobody Type: Cleanup/optimization | Status: new Component: Forms | Version: master Severity: Normal | Keywords: Triage Stage: Unreviewed | Has patch: 0 Needs documentation: 0 | Needs tests: 0 Patch needs improvement: 0 | Easy pickings: 0 UI/UX: 0 | ------------------------------------------------+------------------------ Looking at save_new() in BaseInlineFormset it seems it can be replaced with e.g. {{{ --- a/django/forms/models.py +++ b/django/forms/models.py @@ -940,17 +940,7 @@ class BaseInlineFormSet(BaseModelFormSet): # form (it may have been saved after the formset was originally # instantiated). setattr(form.instance, self.fk.name, self.instance) - # Use commit=False so we can assign the parent key afterwards, then - # save the object. - obj = form.save(commit=False) - pk_value = getattr(self.instance, self.fk.remote_field.field_name) - setattr(obj, self.fk.get_attname(), getattr(pk_value, 'pk', pk_value)) - if commit: - obj.save() - # form.save_m2m() can be called via the formset later on if commit=False - if commit and hasattr(form, 'save_m2m'): - form.save_m2m() - return obj + return super().save_new(form, commit=commit)
def add_fields(self, form, index): super().add_fields(form, index) }}} This passes the existing test suite so suggests yes, or that the test suite is missing important cases. From my shaky grasp of model field internals the extra lines set the value of the field attname (e.g. user_id) attribute, but this is already set by the earlier setattr call updating form.instance. I feel like I'm missing something here but it seems to work so...? Cheers LJS -- Ticket URL: <https://code.djangoproject.com/ticket/29474> Django <https://code.djangoproject.com/> The Web framework for perfectionists with deadlines. -- You received this message because you are subscribed to the Google Groups "Django updates" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-updates+unsubscr...@googlegroups.com. To post to this group, send email to django-updates@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/django-updates/048.dbb937615feb509bd76df133f85205a6%40djangoproject.com. For more options, visit https://groups.google.com/d/optout.