[Deprecated] DMZ 1.6.2 (DataMapper OverZealous Edition)

[eluser]Alface[/eluser]
I had been facing a problem for a long time with "HTML Form Generation Methods (htmlform) Extension".
The code is:

Code:

class Company extends DataMapper {
    var $has_many = array(
            'telephone' => array(
                'class' => 'telephone',
                   'other_field' => 'user'
            )
    );
    var $validation = array(
        'cname' => array(
            'label' => 'Company name',
            'type' => 'mult'
        ),
        'user' => array(
            'label' => 'Users'
        )
        );
[...]
}

Code:

class User extends DataMapper {
    var $has_one = array(
            'user' => array(
                'class' => 'user',
                   'other_field' => 'telephone'
            )
    );
    var $validation = array(
        'name' => array(
            'label' => 'Name',
            'rules' => array('trim')
        ),
        'email' => array(
            'label' => 'Email',
            'rules' => array('trim')
        )
    );

[...]
}

The problem:
I would like for it to instead of showing a drowdown for the itens from the database, show an input for the User 'name' and a button "More user", and include another row of inputs.
I know I will need a JS script, and I already have it. But I think I could use the render functions of htmlform Extension.

Has anyone one been through this before?