public function savePicture($album_id, $filename, $path, $main_id = null, $style = 'full')
    {
        $this->create();

        # Save the record in database
        $picture = array(
            'Picture' => array(
                'album_id' => $album_id,
                'name' => $filename,
                'path' => $path,
                'main_id' => $main_id,
                'style' => $style
            )
        );

        $this->save($picture);

        return $this->id;
    }