function node_gallery_get_image_nids_sorted_by in Node Gallery 6.3

Get image nids sorted by a custom field, such as title or filepath.

Parameters

object $gallery The node object of a gallery.:

string $op The entry to sort after; one of title, created, changed, filepath, weight or current.:

boolean $reverse If the order should be reversed; defaults to FALSE.:

Return value

array Array of image nids.

1 call to node_gallery_get_image_nids_sorted_by()

node_gallery_json_get_sorted_images in ./node_gallery.pages.inc

Page callback for the sort image page, when it retrieves image nids ordered by a specified field.

File

./node_gallery.inc, line 460

Shared functions for node_gallery

Code

function node_gallery_get_image_nids_sorted_by(&$gallery, $op = '', $reverse = FALSE) {

  // get detailed image infos to be able to sort by arbitrary fields
  $images = node_gallery_get_images($gallery, TRUE, FALSE);
  $sort_function = NULL;
  switch ($op) {
    case 'title':
      $sort_function = create_function('$a,$b', 'return strnatcasecmp($a->title, $b->title);');
      break;
    case 'filename':
      $sort_function = create_function('$a,$b', 'return strnatcasecmp(basename($a->filepath), basename($b->filepath));');
      break;
    case 'created':
    case 'changed':
    case 'weight':
      $sort_function = create_function('$a,$b', 'return ($a->' . $op . ' <= $b->' . $op . ') ? -1 : 1;');
      break;
    case 'current':
    default:
  }
  if ($sort_function && uasort($images, $sort_function) === FALSE) {
    $image_nids = FALSE;
  }
  else {
    $image_nids = array();
    foreach ($images as $image) {
      $image_nids[] = $image->nid;
    }
    if ($reverse && $op != 'current') {
      $image_nids = array_reverse($image_nids);
    }
  }
  return $image_nids;
}