Blank option in required ChoiceField

Question

I want my ChoiceField in ModelForm to have a blank option (------) but it\'s required.

I need to have blank option to prevent user from accidentally skipping the field t

Answer 1

You could validate the field with clean_FOO

CHOICES = (
    ('------------','-----------'), # first field is invalid.
    ('Foo', 'Foo')
)
class FooForm(forms.Form):
    foo = forms.ChoiceField(choices=CHOICES)

    def clean_foo(self):
        data = self.cleaned_data.get('foo')
        if data == self.fields['foo'].choices[0][0]:
            raise forms.ValidationError('This field is required')
        return data

---

If it's a ModelChoiceField, you can supply the empty_label argument.

foo = forms.ModelChoiceField(queryset=Foo.objects.all(), 
                    empty_label="-------------")

This will keep the form required, and if ----- is selected, will throw a validation error.