Maybe because I have a list of values that I want the user to be able
to select between. A list of 4 or so things that I want the user to
be able to choose one or more of. Is there some better way to get
this accomplished?
On Feb 19, 11:43 am, Karen Tracey <kmtra...@gmail.com> wrote:
> On Thu, Feb 19, 2009 at 11:56 AM, Mark Jones <mark0...@gmail.com> wrote:
>
> > forms.IntegerField(widget=forms.CheckboxInput(attrs={'value':1}),
> > required=False)
>
> > won't work because
>
> > def value_from_datadict(self, data, files, name):
> > if name not in data:
> > # A missing value means False because HTML form submission
> > does not
> > # send results for unselected checkboxes.
> > return False
> > return super(CheckboxInput, self).value_from_datadict(data,
> > files, name)
>
> > returns False when the box is unchecked, and False is not one of the
> > EMPTY_FIELDS so you end up with required=True even when you specify
> > required=False
>
> Huh? The field doesn't become required. Rather the IntegerField is unable
> to validate the value returned in the case where the check box is unchecked:
>
> Python 2.5.1 (r251:54863, Jul 31 2008, 23:17:40)
> [GCC 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2)] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
> (InteractiveConsole)>>> from django import forms
> >>> class OBF(forms.Form):
>
> ... x = forms.IntegerField(widget=forms.CheckboxInput(attrs={'value':1}),
> required=False)
> ...>>> f = OBF({})
> >>> f.is_valid()
> False
> >>> f.errors
>
> {'x': [u'Enter a whole number.']}
>
> The error is not that the field is required, but that the value returned by
> the widget cannot be interpreted by the IntegerField.
>
> > Not sure how to fix this for real, I've created a CheckboxInteger that
> > returns None instead of False....
>
> > Any better ideas?
>
> Don't try to marry a widget that returns one sort of data to a field that is
> expecting something else? Seriously, why are you trying to hammer in your
> nail with this screwdriver?
>
> Karen
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