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Drupal example source code file (nodereference.rules.inc)

This example Drupal source code file (nodereference.rules.inc) is included in the DevDaily.com "Drupal Source Code Warehouse" project. The intent of this project is to help you "Learn Drupal by Example".

PHP - Drupal tags/keywords

array, content, empty, function, info, label, nid, node, options, php, return, settings, the, type

The nodereference.rules.inc Drupal example source code

<?php
// $Id: nodereference.rules.inc,v 1.1.2.2 2008/10/06 15:02:03 karens Exp $

/**
 * @file
 * Provides additional rules support for nodereference fields.
 */

/**
 * Implementation of hook_rules_action_info().
 */
function nodereference_rules_action_info() {
  $info = array();
  $info['nodereference_rules_action_load'] = array(
    'label' => t('Load a referenced node'),
    'arguments' => array(
      'node' => array(
        'type' => 'node',
        'label' => t('Content containing the node reference field'),
      ),
    ),
    'new variables' => array(
      'referenced_node' => array(
        'type' => 'node',
        'label' => t('Referenced content'),
      ),
    ),
    'module' => 'CCK',
    'help' => t('Note that if the field has multiple values, only the first content node will be loaded.'),
  );
  return $info;
}

function nodereference_rules_action_load($node, $settings) {
  if ($nid = $node->{$settings['field']}[0]['nid']) {
    return array('referenced_node' => node_load(array('nid' => $nid)));
  }
}

function nodereference_rules_action_load_form($settings, &$form) {
  $settings += array('field' => '');
  $options = content_rules_get_field_names_by_type('nodereference');
  $form['settings']['field'] = array(
    '#type' => 'select',
    '#title' => t('Field'),
    '#default_value' => $settings['field'],
    '#options' => $options,
    '#required' => TRUE,
    '#disabled' => empty($options),
    '#description' => empty($options) ? t('There are no nodereference fields defined.') : '',
  );
}

/**
 * Helps upgrading from the workflow-ng action
 * "workflow_ng_action_load_referenced_node" to the equivalent rules action.
 */
function workflow_ng_action_load_referenced_node_upgrade(&$element) {
  $element['#name'] = 'nodereference_rules_action_load';
}

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