#25980: Inconsistent error behaviour when providing a queryset as initial value
on
ModelMultipleChoiceField
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Reporter: karyon | Owner: nobody
Type: Uncategorized | Status: new
Component: Uncategorized | Version: 1.9
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
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So i provided a queryset as initial value for a non-required and disabled
ModelMultipleChoiceField. it seemed to work as i saw the correct values in
the rendered output.
but, when saving the form i got an error {{{ Enter a list of values.}}}
1. the error did not show up when the queryset i provided yielded no
results, which is inconsistent. the reason for that is that
[https://github.com/django/django/blob/d91cc25a2a43cb2526943dc2285ffe59e38fabfd/django/forms/models.py#L1250
this boolean expression] evaluates to true as soon as there are results in
the queryset.
2. something else appeared fishy to me: in one line this method returns a
queryset ({{{self.queryset.none()}}}), but in the next line it raises an
error if the value is neither a list nor a tuple.
if you folks tell me what the intended behaviour is / which types should
be used, i can try to create a fix if you want.
3. and the last (slightly unrelated) issue: since the field was disabled,
i was wondering why cleaning it doesn't take a shortcut and does nothing
at all... bumped into this a few times.
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Ticket URL: <https://code.djangoproject.com/ticket/25980>
Django <https://code.djangoproject.com/>
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