Method clean_username

tests/admin_views/forms.py:13–17

(self)

        css = {"all": ("path/to/media.css",)}

    def clean_username(self):
        username = self.cleaned_data.get("username")
        if username == "customform":
            raise ValidationError("custom form error")
        return username


class CustomAdminPasswordChangeForm(AdminPasswordChangeForm):