function views_atom_element_validate_integer_positive_or_zero in Views Atom 6

Helper form element validator: integer >= 0.

This is a backport, and slight modification, of Drupal 7's _element_validate_integer_positive(). This function allows zero.

1 string reference to 'views_atom_element_validate_integer_positive_or_zero'

views_atom_rules_action_add_nids_to_feed_form in ./views_atom.rules.inc

Form callback for the viws_atom_rules_action_add_to_feed action.

File

./views_atom.rules.inc, line 127

Code

function views_atom_element_validate_integer_positive_or_zero($element, &$form_state) {
  $value = $element['#value'];
  if ($value !== '' && (!is_numeric($value) || intval($value) != $value || $value < 0)) {
    form_error($element, t('%name must be a positive integer or 0.', array(
      '%name' => $element['#title'],
    )));
  }
}