function webform_checkbox_value in Webform 6.3

Helper function to determine the value for a checkbox form element.

Drupal core cannot decern the difference between an unchecked checkbox and a checked checkbox that has a value of '0'. This value callback will return NULL instead of an integer 0 for checkboxes that are not checked.

See also

form_type_checkbox_value()

1 string reference to 'webform_checkbox_value'

webform_expand_checkboxes in components/select.inc

Drupal 6 hack that properly *renders* checkboxes in multistep forms. This is different than the value hack needed in Drupal 5, which is no longer needed.

File

components/select.inc, line 488

Webform module multiple select component.

Code

function webform_checkbox_value($form, $edit = FALSE) {
  if ($edit !== FALSE) {
    if (empty($form['#disabled'])) {
      return $edit !== NULL ? $form['#return_value'] : NULL;

      // 0 in core.
    }
    else {
      return $form['#default_value'];
    }
  }
}