Question

I’m having a heck of a time validating a 6-digit number:

# forms.py
class TheForm(forms.Form):
    code = forms.RegexField(regex=r'^\d{6}$')

# tests.py
class TheFormTestCase(TestCase):
    def test_the_form(self):
        form = TheForm(initial={'code': '123456'})
        self.assertTrue(form.is_valid(),
            'Form should accept a string of 6 characters '
            'that are digits')

My test case is returning invalid. Can someone please point out what I’m doing wrong?

Answer 1

As mentioned in the Django documentation:

initial values are not used as “fallback” data in validation if a
particular field’s value is not given. initial values are only
intended for initial form display

You should use data argument:

form = TheForm(data={'code': '123456'})