Collections\Controller\Api::save PHP Method

    public function save()
    {
        $collection = $this->param("collection", null);
        if ($collection) {
            $collection["modified"] = time();
            $collection["_uid"] = @$this->user["_id"];
            if (!isset($collection["_id"])) {
                $collection["created"] = $collection["modified"];
            }
            $this->app->db->save("common/collections", $collection);
        }
        return $collection ? json_encode($collection) : '{}';
    }