Club Drupal

<?php

/**

 * @file

 * Contains menu item registration for the content tool.

 *

 * The menu items registered are AJAX callbacks for the things like

 * autocomplete and other tools needed by the content types.

 */

function ctools_content_menu(&$items) {

  $base = array(

    'access arguments' => array('access content'),

    'type' => MENU_CALLBACK,

    'file' => 'includes/content.menu.inc',

  );

  $items['ctools/autocomplete/%'] = array(

    'page callback' => 'ctools_content_autocomplete_entity',

    'page arguments' => array(2),

  ) + $base;

}

/**

 * Helper function for autocompletion of entity titles.

 */

function ctools_content_autocomplete_entity($entity_type, $string = '') {

  if ($string != '') {

    $entity_info = entity_get_info($entity_type);

    if (!module_exists('entity')) {

      module_load_include('inc', 'ctools', 'includes/entity-access');

      _ctools_entity_access($entity_info, $entity_type);

    }

    // We must query all ids, because if every one of the 10 don't have access

    // the user may never be able to autocomplete a node title.

    $preg_matches = array();

    $matches = array();

    $match = preg_match('/\[id: (\d+)\]/', $string, $preg_matches);

    if (!$match) {

      $match = preg_match('/^id: (\d+)/', $string, $preg_matches);

    }

    // If an ID match was found, use that ID rather than the whole string.

    if ($match) {

      $entity_id = $preg_matches[1];

      $results = _ctools_getReferencableEntities($entity_type, $entity_info, $entity_id, '=', 1);

    }

    else {

      // We cannot find results if the entity doesn't have a label to search.

      if (!isset($entity_info['entity keys']['label'])) {

        drupal_json_output(array("[id: NULL]" => '<span class="autocomplete_title">' . t('Entity Type !entity_type does not support autocomplete search.', array('!entity_type' => $entity_type)) . '</span>'));

        return;

      }

      $results = _ctools_getReferencableEntities($entity_type, $entity_info, $string, 'LIKE', 10);

    }

    foreach ($results as $entity_id => $result) {

      $matches[$result['label'] . " [id: $entity_id]"] = '<span class="autocomplete_title">' . check_plain($result['label']) . '</span>';

      $matches[$result['label'] . " [id: $entity_id]"] .= isset($result['bundle']) ? ' <span class="autocomplete_bundle">(' . check_plain($result['bundle']) . ')</span>' : '';

    }

    drupal_json_output($matches);

  }

}

/**

 * Use EntityReference_SelectionHandler_Generic class to build our search query.

 */

function _ctools_buildQuery($entity_type, $entity_info, $match = NULL, $match_operator = 'CONTAINS') {

  $base_table = $entity_info['base table'];

  $label_key = $entity_info['entity keys']['label'];

  $query = db_select($base_table)

    ->fields($base_table, array($entity_info['entity keys']['id']));

  if (isset($match)) {

    if (isset($label_key)) {

      $query->condition($base_table . '.' . $label_key, '%' . $match . '%', $match_operator);

    }

    // This should never happen, but double check just in case.

    else {

      return array();

    }

  }

  // Add a generic entity access tag to the query.

  $query->addTag('ctools');

  // We have to perform two checks. First check is a query alter (with tags)

  // in an attempt to only return results that have access. However, this is

  // not full-proof since entities many not implement hook_access query tag.

  // This is why we have a second check after entity load, before we display

  // the label of an entity.

  if ($entity_type == 'comment') {

    // Adding the 'comment_access' tag is sadly insufficient for comments: core


    // requires us to also know about the concept of 'published' and


    // 'unpublished'.


    if (!user_access('administer comments')) {

      $query->condition('comment.status', COMMENT_PUBLISHED);

    }

    // Join to a node if the user does not have node access bypass permissions


    // to obey node published permissions


    if (!user_access('bypass node access')) {

      $node_alias = $query->innerJoin('node', 'n', '%alias.nid = comment.nid');

      $query->condition($node_alias . '.status', NODE_PUBLISHED);

    }

    $query->addTag('node_access');

  }

  else {

    $query->addTag($entity_type . '_access');

  }

  // Add the sort option.

  if (isset($label_key)) {

    $query->orderBy($base_table . '.' . $label_key, 'ASC');

  }

  return $query;

}

/**

 * Private function to get referencable entities. Based on code from the

 * Entity Reference module.

 */

function _ctools_getReferencableEntities($entity_type, $entity_info, $match = NULL, $match_operator = 'LIKE', $limit = 0) {

  global $user;

  $account = $user;

  $options = array();

  // We're an entity ID, return the id.

  if (is_numeric($match) && $match_operator == '=') {

    if ($entity = array_shift(entity_load($entity_type, array($match)))) {

      if (isset($entity_info['access callback']) && function_exists($entity_info['access callback'])) {

        if ($entity_info['access callback']('view', $entity, $account, $entity_type)) {

          $label = entity_label($entity_type, $entity);

          return array(

            $match => array(

              'label' => !empty($label) ? $label : $entity->{$entity_info['entity keys']['id']},

              'bundle' => !empty($entity_info['entity keys']['bundle']) ? check_plain($entity->{$entity_info['entity keys']['bundle']}) : NULL,

            ),

          );

        }

      }

    }

    // If you don't have access, or an access callback or a valid entity, just

    // Return back the Entity ID.

    return array(

      $match => array(

        'label' => $match,

        'bundle' => NULL,

      ),

    );

  }

  // We have matches, build a query to fetch the result.

  if ($query = _ctools_buildQuery($entity_type, $entity_info, $match, $match_operator)) {

    if ($limit > 0) {

      $query->range(0, $limit);

    }

    $results = $query->execute();

    if (!empty($results)) {

      foreach ($results as $record) {

        $entities = entity_load($entity_type, array($record->{$entity_info['entity keys']['id']}));

        $entity = array_shift($entities);

        if (isset($entity_info['access callback']) && function_exists($entity_info['access callback'])) {

          if ($entity_info['access callback']('view', $entity, $account, $entity_type)) {

            $label = entity_label($entity_type, $entity);

            $options[$record->{$entity_info['entity keys']['id']}] = array(

              'label' => !empty($label) ? $label : $entity->{$entity_info['entity keys']['id']},

              'bundle' => !empty($entity_info['entity keys']['bundle']) ? check_plain($entity->{$entity_info['entity keys']['bundle']}) : NULL,

            );

          }

        }

      }

    }

    return $options;

  }

  return array();

}