I did a bit of playing around and found the same as you did.
I think the bottom line is that a boolean field of any type can only
realistically hold two values. The NullBoolean must only be a workaround
to support various form logic.
If you truly need a third value then an IntegerField is probably your
best bet.
Mike
On 18/03/2012 8:10am, Ben Racine wrote:
yes.
On Mar 16, 2012 8:07 PM, "Mike Dewhirst" <mi...@dewhirst.com.au
<mailto:mi...@dewhirst.com.au>> wrote:
On 17/03/2012 11:02am, Ben wrote:
I have a NullBooleanField that I would like to show up in my admin
interface as radio buttons with unknown selected by default.
# I have the following simplified files
## models.py ##
class Value(models.Model):
presence = models.NullBooleanField(default=False)
Have you tried
presence = models.NullBooleanField(default=None)
??
## admin.py ##
PRESENCE_CHOICES = ((True, 'True'), (False, 'False'), (None,
'None') )
class ValueAdmin(admin.ModelAdmin):
formfield_overrides = {
models.NullBooleanField: {'widget':
RadioSelect(choices=PRESENCE_CHOICES)}
}
admin.site.register(Value, ValueAdmin)
This behaves very closely to what I desire, but I don't know
what I
could replace the False with in:
presence = models.NullBooleanField(default=False)
in order to make it behave as I would like.
Thanks so much for your time,
Ben R.
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