/**
* Returns a JSON feed of gallery items.
*
* @param string $id The gallery id or URL
* @return string The gallery in JSON format
*/
public function feed($id = null)
{
$response = array('success' => true);
if (empty($id)) {
$response['success'] = false;
}
// Check to ensure that JSON was used to make the POST request
if (!$this->request->is('json')) {
$response['success'] = false;
}
if (preg_match('/[0-9a-f]{24}/', $id)) {
$field = '_id';
} else {
$field = 'url';
}
if ($response['success'] === true) {
// Find the gallery document itself (by _id or url)
$document = Page::find('first', array('conditions' => array($field => $id, 'published' => true)));
if (empty($document)) {
$response['success'] = false;
}
if ($response['success'] === true) {
// Find all items for the current gallery
$gallery_items = Item::find('all', array('conditions' => array('_galleries' => (string) $document->_id)));
// Order those gallery items based on the gallery document's gallery_item_order field (if set)
if (isset($document->gallery_item_order) && !empty($document->gallery_item_order)) {
// This sort() method is the awesome.
$ordering = $document->gallery_item_order->data();
// data() must be called so that the iterator loads up all the documents...
// Something that has to be fixed I guess. Then data() doesn't need to be called.
$gallery_items->data();
$gallery_items->sort(function ($a, $b) use($ordering) {
if ($a['_id'] == $b['_id']) {
return strcmp($a['_id'], $b['_id']);
}
$cmpa = array_search($a['_id'], $ordering);
$cmpb = array_search($b['_id'], $ordering);
return $cmpa > $cmpb ? 1 : -1;
});
}
$response['gallery'] = $document->data();
$response['items'] = $gallery_items->data();
}
}
$this->render(array('json' => $response));
}
