rut

This module defines a new element for RUN or RUT, these are unique numbers
assigned to natural or legal persons of Chile.

RUT like a Field.

This module has a submodule to implements the RUT like a field!.
Also this have integration with the devel generator, feeds* and migrate*.

*from 7.x-1.1 version.

Example

You can use it on your custom forms like this:

...
  $form['rut_client'] = array(
    '#type' => 'rut_field',
    '#title' => t('RUT'),
    '#required' => TRUE,
  );
...

That was easy. With this you can forget validate the RUT because this element will do it for you!.
Can also validate the RUT on the client side like this:

  $form['rut_client'] = array(
    '#type' => 'rut_field',
    '#title' => t('Rut'),
    '#required' => TRUE,
    '#validate_js' => TRUE,
  );

For this, the module uses the jQuery Rut Plugin.

Related projects

• Webform Rut: This module add the Rut element for webform.