Pony.fm/app/models/Commands/DeleteAlbumCommand.php

<?php

	namespace Commands;

	use Entities\Album;
	use Entities\Track;
	use Illuminate\Support\Facades\Auth;

	class DeleteAlbumCommand extends CommandBase {
		private $_albumId;
		private $_album;

		function __construct($albumId) {
			$this->_albumId = $albumId;
			$this->_album = ALbum::find($albumId);
		}

		/**
		 * @return bool
		 */
		public function authorize() {
			$user = Auth::user();
			return $this->_album && $user != null && $this->_album->user_id == $user->id;
		}

		/**
		 * @throws \Exception
		 * @return CommandResponse
		 */
		public function execute() {
			foreach ($this->_album->tracks as $track) {
				$track->album_id = null;
				$track->track_number = null;
				$track->updateTags();
				$track->save();
			}

			$this->_album->delete();
			return CommandResponse::succeed();
		}
	}