There is a CheckBoxSelectMultiple widget in django.forms, suitable
for use with a forms.ModelMultipeChoiceField, and probably with
other stuff. Doesn't it do what you need? Or are you just reinventing
the wheel.
And, of course, your code as shown doesn't work because Cat and
Category are not based on django.db.models.Model .
On Fri, Aug 6, 2010 at 2:41 PM, lingrlongr <keith.ebe...@gmail.com> wrote:
> Forgo the most important part. I want to be prompted with a
> checkboxes that show which categories are selected, as well as the
> ones that aren't.
>
> On Aug 6, 2:13 pm, lingrlongr <keith.ebe...@gmail.com> wrote:
>> Having difficulty getting the check_test to work. Can't find any
>> examples out there that help. I'll probably have to give a little
>> background. I simplified where able to...
>>
>> class Cat:
>> name = CharField
>>
>> class Category:
>> name = ForeignKey(Cat)
>> weight = DecimalField
>> item = ForeignKey('Item')
>>
>> class Item:
>> name = CharField
>>
>> Basically Cat is a model of all categories and Category is a model of
>> which Cat's are assigned to an item. I did it this way because I want
>> to have a "master list" of categories, then have the mapping done in
>> other models.
>>
>> So now I want to build a form at run-time.
>>
>> def get_form(item):
>> fields = dict()
>> cat_choices = [(c.id, c.name) for c in Cat.objects.all()]
>> for c in cat_choices:
>> id, name = c
>> checked = bool(item.categoty_set.filter(pk=id).count())
>>
>> fields['item_cat_%d' % id] = forms.ChoiceField(
>> label = name,
>> required = False,
>> choices = cat_choices,
>> widget = forms.CheckboxInput(
>> attrs={'value': checked},
>> check_test = lambda a: a == checked
>> )
>> )
>> return type('CatSelectForm', (forms.BaseForm,), {'base_fields':
>> fields})
>>
>> So how can I get the correct checkboxes checked at runtime when the
>> template is rendered?
>>
>> Thx.
>
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