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   1  <?php
   2  // $Id: nodereference.rules.inc,v 1.1.2.2 2008/10/06 15:02:03 karens Exp $
   3  
   4  /**
   5   * @file
   6   * Provides additional rules support for nodereference fields.
   7   */
   8  
   9  /**
  10   * Implementation of hook_rules_action_info().
  11   */
  12  function nodereference_rules_action_info() {
  13    $info = array();
  14    $info['nodereference_rules_action_load'] = array(
  15      'label' => t('Load a referenced node'),
  16      'arguments' => array(
  17        'node' => array(
  18          'type' => 'node',
  19          'label' => t('Content containing the node reference field'),
  20        ),
  21      ),
  22      'new variables' => array(
  23        'referenced_node' => array(
  24          'type' => 'node',
  25          'label' => t('Referenced content'),
  26        ),
  27      ),
  28      'module' => 'CCK',
  29      'help' => t('Note that if the field has multiple values, only the first content node will be loaded.'),
  30    );
  31    return $info;
  32  }
  33  
  34  function nodereference_rules_action_load($node, $settings) {
  35    if ($nid = $node->{$settings['field']}[0]['nid']) {
  36      return array('referenced_node' => node_load(array('nid' => $nid)));
  37    }
  38  }
  39  
  40  function nodereference_rules_action_load_form($settings, &$form) {
  41    $settings += array('field' => '');
  42    $options = content_rules_get_field_names_by_type('nodereference');
  43    $form['settings']['field'] = array(
  44      '#type' => 'select',
  45      '#title' => t('Field'),
  46      '#default_value' => $settings['field'],
  47      '#options' => $options,
  48      '#required' => TRUE,
  49      '#disabled' => empty($options),
  50      '#description' => empty($options) ? t('There are no nodereference fields defined.') : '',
  51    );
  52  }
  53  
  54  /**
  55   * Helps upgrading from the workflow-ng action
  56   * "workflow_ng_action_load_referenced_node" to the equivalent rules action.
  57   */
  58  function workflow_ng_action_load_referenced_node_upgrade(&$element) {
  59    $element['#name'] = 'nodereference_rules_action_load';
  60  }