django: how to change values for nullbooleanfield in a modelform?

Question

In the docs, the nullbooleanfield is represented as a <select> box with "Unknown", "Yes" and "No" choices. How can I change the values of select to some other more meaningful texts and map it back to the yes,no and unknown values in my modelform?

For example I have yes_no_required = models.NullBooleanField() and I would like to have 'yes I acknowledge this', 'no, I do not like this' and 'I do not know now' mapping to yes, no and required accordingly.

Answer 1

I spent half an hour putting together a demo just to prove to myself this works:

CHOICES = (
    (None, "I do not know now"),
    (True, "Yes I acknowledge this"),
    (False, "No, I do not like this")
)

class Demo(models.Model):
    yes_no_required = models.NullBooleanField(choices = CHOICES)

class DemoForm(forms.ModelForm):
    class Meta:
        model = Demo

I looked in the Django source code. Everything can accept a choices array. Obviously, for some of those that doesn't make sense, but it's possible.