[Django] #35739: formset error

[Django]

#35739: formset error
-------------------------------+--------------------------------------
Reporter: hcjohnston | Type: Bug
Status: new | Component: Forms
Version: 5.0 | Severity: Normal
Keywords: model formset | Triage Stage: Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------+--------------------------------------
using djagno 5.0

I have an UpdateView which uses a ModelForm and two formsets
("item_formset" and "section_formset" below) to update a model. Both
formsets have extra=0 and no initial data.
I am getting an error when the item_formset.is_valid() is called. see
traceback below. no issues with the ModelForm or section_formset

{{{
class SiteVisitItemForm(forms.ModelForm):

class Meta:
model = models.SiteVisitItem
exclude = "report", "project", "action_for", "action_complete",
"number"

SiteVisitItemFormSet = forms.models.inlineformset_factory(
models.SiteVisitReport, models.SiteVisitItem,
form=SiteVisitItemForm,
can_delete=True,
extra=0,
can_order=True,
)

class SiteVisitSectionForm(forms.Form):
section_name = forms.CharField(max_length=128, required=False,
widget=forms.TextInput(attrs={"placeholder": "Section heading"}))
section_text = forms.CharField(max_length=1000, required=False,
widget=forms.Textarea(attrs={"placeholder": "Introduction", "style":
"height: 100px;"}))

def clean(self):
if self.cleaned_data["section_name"] == "" and
self.cleaned_data["section_text"] == "" and self.cleaned_data["DELETE"] ==
False:
self.add_error(None, "Please include either section name or
introduction text")

SiteVisitSectionFormset = forms.formset_factory(
form=SiteVisitSectionForm, can_delete=True, extra=0, can_order=True
)

}}}


Traceback (most recent call last):
File "python3.10/site-packages/django/core/handlers/exception.py", line
55, in inner
response = get_response(request)
File "python3.10/site-packages/django/core/handlers/base.py", line 197,
in _get_response
response = wrapped_callback(request, *callback_args,
**callback_kwargs)
File "python3.10/site-packages/django/views/generic/base.py", line 104,
in view
return self.dispatch(request, *args, **kwargs)
File "python3.10/site-packages/fivestar_app/quality/views.py", line 129,
in dispatch
return super().dispatch(request, *args, **kwargs)
File "python3.10/site-packages/django/contrib/auth/mixins.py", line 109,
in dispatch
return super().dispatch(request, *args, **kwargs)
File "python3.10/site-packages/django/views/generic/base.py", line 143,
in dispatch
return handler(request, *args, **kwargs)
File "python3.10/site-packages/fivestar_app/quality/views.py", line 222,
in post
if all([form.is_valid(), item_formset.is_valid(),
section_formset.is_valid()]):
File "python3.10/site-packages/django/forms/formsets.py", line 384, in
is_valid
self.errors
File "python3.10/site-packages/django/forms/formsets.py", line 366, in
errors
self.full_clean()
File python3.10/site-packages/django/forms/formsets.py", line 423, in
full_clean
for i, form in enumerate(self.forms):
File "python3.10/site-packages/django/utils/functional.py", line 47, in
__get__
res = instance.__dict__[self.name] = self.func(instance)
File "python3.10/site-packages/django/forms/formsets.py", line 205, in
forms
return [
File "python3.10/site-packages/django/forms/formsets.py", line 206, in
<listcomp>
self._construct_form(i, **self.get_form_kwargs(i))
File "python3.10/site-packages/django/forms/models.py", line 1120, in
_construct_form
form = super()._construct_form(i, **kwargs)
File "python3.10/site-packages/django/forms/models.py", line 737, in
_construct_form
kwargs["initial"] = self.initial_extra[i - self.initial_form_count()]

Exception Type: KeyError at /quality/sitevisitreports/24022/2/items/
Exception Value: 0


the traceback appears to refer to this part of model form:

{{{

elif self.initial_extra:
# Set initial values for extra forms
try:
kwargs["initial"] = self.initial_extra[i -
self.initial_form_count()]
except IndexError:
pass
}}}

given that self.initial_extra = initial and initial is a dictionary, is
IndexError the right exception here?
--
Ticket URL: <https://code.djangoproject.com/ticket/35739>
Django <https://code.djangoproject.com/>
The Web framework for perfectionists with deadlines.

[Django]

#35739: formset error
-------------------------------+--------------------------------------
Reporter: hcjohnston | Owner: (none)

Type: Bug | Status: new
Component: Forms | Version: 5.0

Severity: Normal | Resolution:

Keywords: model formset | Triage Stage: Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------+--------------------------------------

Description changed by hcjohnston:

Old description:

New description:

--
Ticket URL: <https://code.djangoproject.com/ticket/35739#comment:1>

[Django]

Ticket URL: <https://code.djangoproject.com/ticket/35739#comment:2>