/**
* Updates the collections an item is in
*
* @param array $newCollections Array of new collection keys to set
*/
public function setCollections($collectionKeys=[]) {
if (!$this->loaded['collections']) {
$this->loadCollections();
}
if ((!$this->collections && !$collectionKeys) ||
(!Zotero_Utilities::arrayDiffFast($this->collections, $collectionKeys) &&
!Zotero_Utilities::arrayDiffFast($collectionKeys, $this->collections))) {
Z_Core::debug("Collections have not changed for item $this->id");
return;
}
$this->storePreviousData('collections');
$this->collections = array_unique($collectionKeys);
$this->changed['collections'] = true;
}