In a form when I have a non mandatory date that isn't filled, the error "Date expected!" is returned for that field! Using [ ], the error isn't displayed but the form doesn't submit.

The only way I found to submit the form without any errors is to check if that field as a null date, and if it has, then set the form widget to valid and clear the error message.

Is there any other way?

Thks

Couldn't you set the input field's type to Text?