function book_copy_update_internal_links in Book Copy 7.2

Update the internal links in body fields of new nodes that have just been cloned.

1 string reference to 'book_copy_update_internal_links'

book_copy_process_copy in ./book_copy.module

Execute a batch process.

File

./book_copy.module, line 261

Book copy, copy book outlines

Code

function book_copy_update_internal_links($queue_id, &$context) {
  $nid_map = array();

  // We are using the batch api for this.
  if (!isset($context['sandbox']['progress'])) {
    $context['sandbox']['progress'] = 0;

    // load the nid_map queue
    $queue = DrupalQueue::get($queue_id);

    // assemble the queue into the nid_map array
    while ($queue
      ->numberOfItems() > 0) {

      // load the item from the queue
      $item = $queue
        ->claimItem();

      // remove the item from the queue
      $queue
        ->deleteItem($item);

      // add the item to the nid_map array
      foreach ($item->data as $old_nid => $new_nid) {
        $context['sandbox']['nid_map'][$old_nid] = $new_nid;
      }
    }

    // Set the max, and the unprocessed pointer as well as create a pattern array and a replacement array.
    $context['sandbox']['max'] = count($context['sandbox']['nid_map']);
    $context['sandbox']['unprocessed'] = $context['sandbox']['nid_map'];
    $context['sandbox']['patterns'] = array();
    $context['sandbox']['replacements'] = array();

    // Build the patterns and replacements from the nid map.
    foreach ($context['sandbox']['nid_map'] as $old_nid => $new_nid) {

      // This pattern finds the exact old node nid followed by a ".
      // This way it will never be anything longer than the actual node id, for instance 300 when it should be 30
      $context['sandbox']['patterns'][] = '/node\\/' . $old_nid . '(?=\\")/';
      $context['sandbox']['replacements'][] = 'node/' . $new_nid;
    }
  }

  // Set a limit on how many nodes will process in each batch as well as initialize the counter.
  $limit = BOOK_COPY_PROCESSING_LIMIT;
  $count = 0;

  // loop over the newly created nids and attempt to update the internal links
  foreach ($context['sandbox']['unprocessed'] as $key => $new_nid) {
    $count++;

    // Start with a clean slate.
    $updated_node_body = NULL;

    // load the newly created node
    $new_node = node_load($new_nid);

    // see if we have a body field
    $node_body = isset($new_node->body['und'][0]['value']) ? $new_node->body['und'][0]['value'] : NULL;

    // if there is a body, attempt to replace old_nids with new_nids
    if ($node_body) {
      $updated_node_body = preg_replace($context['sandbox']['patterns'], $context['sandbox']['replacements'], $node_body);
    }

    // save the node with the updated nids
    if ($updated_node_body) {
      $new_node->body['und'][0]['value'] = $updated_node_body;
      node_save($new_node);
    }

    // Repeat the process on the next batch
    unset($context['sandbox']['unprocessed'][$key]);
    $context['sandbox']['progress']++;

    // exit early if we have reached execution limit
    if ($count == $limit) {
      break;
    }
  }

  // Are we there yet... if not keep going if so call finished.
  if ($context['sandbox']['progress'] != $context['sandbox']['max']) {
    $context['finished'] = $context['sandbox']['progress'] / $context['sandbox']['max'];
  }
}