#32013: TypeError: Field 'id' expected a number but got
<django.forms.models.ModelChoiceIteratorValue object at 0xdeadbeef>
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Reporter: Jaap Roes | Owner: nobody
Type: Bug | Status: new
Component: Forms | Version: 3.1
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 |
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I'm upgrading a project from Django 3.0 to Django 3.1. Running the tests
shows 3 unexpected errors. All are the same `TypeError: Field 'id'
expected a number but got <django.forms.models.ModelChoiceIteratorValue
object at 0xdeadbeef>`
I can trace this back to this code in the `__init__` of a `ModelForm`.
{{{
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
field = self.fields["some_fk_field"]
new_choices = []
for k, v in field.choices:
do_add = True
if not k:
new_choices.append((k, v))
continue
obj = SomeModel.objects.get(pk=k) # *CRASH*
[...snip a bunch logic...]
if do_add:
new_choices.append((k, v))
field.choices = new_choices
}}}
We've recently inherited this code, added tests and upgraded all the way
from 1.4 to 3.0. This bit of code worked in all previous versions but has
started raising errors in 3.1.
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Ticket URL: <https://code.djangoproject.com/ticket/32013>
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