Definition of views_handler_argument_null.
<?php /** * @file * Definition of views_handler_argument_null. */ /** * Argument handler that ignores the argument. * * @ingroup views_argument_handlers */ class views_handler_argument_null extends views_handler_argument { function option_definition() { $options = parent::option_definition(); $options['must_not_be'] = array('default' => FALSE, 'bool' => TRUE); return $options; } /** * Override options_form() so that only the relevant options * are displayed to the user. */ function options_form(&$form, &$form_state) { parent::options_form($form, $form_state); $form['must_not_be'] = array( '#type' => 'checkbox', '#title' => t('Fail basic validation if any argument is given'), '#default_value' => !empty($this->options['must_not_be']), '#description' => t('By checking this field, you can use this to make sure views with more arguments than necessary fail validation.'), '#fieldset' => 'more', ); unset($form['exception']); } /** * Override default_actions() to remove actions that don't * make sense for a null argument. */ function default_actions($which = NULL) { if ($which) { if (in_array($which, array('ignore', 'not found', 'empty', 'default', 'access denied'))) { return parent::default_actions($which); } return; } $actions = parent::default_actions(); unset($actions['summary asc']); unset($actions['summary desc']); return $actions; } function validate_argument_basic($arg) { if (!empty($this->options['must_not_be'])) { return !isset($arg); } return parent::validate_argument_basic($arg); } /** * Override the behavior of query() to prevent the query * from being changed in any way. */ function query($group_by = FALSE) {} }