Zend_Form -> Nicely change setRequired() validate message

Question

Say I create a text element like this:

$firstName = new Zend_Form_Element_Text(\'firstName\');
$firstName->setRequired(true);

Whats

Answer 1

Try

->addValidator('Digits', false);

or

->addValidator('Digits');

You assume that to check Digits it has to have a string length anyway.

Also, I like to do some custom error messages like this:

$firstName->getValidator('NotEmpty')->setMessage('Please enter your first name');

This allows you to "get" the validator and then "set" properties of it.