You could perhaps subclass ChoiceField to allow for custom empty_labels.
This code is highly untested and written so casually it shouldn't be pasted
anywhere.
# your forms.py
from django.forms.fields import ChoiceField
class MyCustomChoiceField(ChoiceField):
def __init__(self, *args, **kwargs):
self.empty_label = kwargs.pop('empty_label', None)
super(MyCustomChoiceField, self).__init__(*args, **kwargs)
self.choices = self.custom_choices(choices)
def custom_choices(self, choices):
if self.empty_label is not None:
yield (u"", self.empty_label)
for choice in self.choices:
yield choice
# ----
I assume something like this would work? I actually believe it should even
come with django.
Cheers,
AT
On Thu, Dec 22, 2011 at 11:05 AM, Tom Evans <tevans...@googlemail.com>wrote:
> On Thu, Dec 22, 2011 at 12:37 PM, talbronstien <talbronst...@gmail.com>
> wrote:
> > Hi,
> >
> > I want to have a field in a form class which will render as select in
> > html. But, I want default text shown as "Select Blood Type". My
> > declaration is
> >
> > gender = forms.ChoiceField(required=False,choices =
> > USER_BLOOD_CHOICES).
> >
> > But, if I add an option value in html, as <option value="0">Select
> > Blood Type"</option>. I get an error, as this is not valid value (as
> > this is not required and user may not select an option). How can I
> > handle this?
> >
> > thanks
> >
>
> Don't add an option in HTML. Job done.
>
> The way I normally do this is to add the invalid choice into the list
> of choices, and then assert that their choice is not the invalid
> choice:
>
> class FooForm(forms.Form):
> INVALID_CHOICE = -1
> WIBBLE = 1
> FOO_CHOICES = (
> (INVALID_CHOICE, "Select..."),
> (WIBBLE, 'Wibble'), )
> fooselect = forms.ChoiceField(choices=FOO_CHOICES)
>
> def clean_fooselect(self):
> if self.cleaned_data.get('foochoice') == INVALID_CHOICE:
> raise forms.ValidationError('Your choice sucked')
>
> Cheers
>
> Tom
>
> --
> You received this message because you are subscribed to the Google Groups
> "Django users" group.
> To post to this group, send email to django-users@googlegroups.com.
> To unsubscribe from this group, send email to
> django-users+unsubscr...@googlegroups.com.
> For more options, visit this group at
> http://groups.google.com/group/django-users?hl=en.
>
>
--
You received this message because you are subscribed to the Google Groups
"Django users" group.
To post to this group, send email to django-users@googlegroups.com.
To unsubscribe from this group, send email to
django-users+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/django-users?hl=en.
