Creating Migration Tasks * * To create your own migration task all you need to do is define your own subclass of MigrationTask and define the * following functions * * mysite/code/MyMigrationTask.php * * * class MyMigrationTask extends BuildTask { * * protected $title = "My Database Migrations"; // title of the script * protected $description = "Description"; // description of what it does * * public function run($request) { * if ($request->getVar('Direction') == 'down') { * $this->down(); * } else { * $this->up(); * } * } * * public function up() { * // do something when going from old -> new * } * * public function down() { * // do something when going from new -> old * } * } * * * Running Migration Tasks * To run any tasks you can find them under the dev/ namespace. To run the above script you would need to run * the following and note - Either the site has to be in [devmode](debugging) or you need to add ?isDev=1 to the URL * * * // url to visit if in dev mode. * http://www.yoursite.com/dev/tasks/MyMigrationTask * * // url if you are in live mode but need to run this * http://www.yoursite.com/dev/tasks/MyMigrationTask?isDev=1 * * * @package framework * @subpackage dev */ class MigrationTask extends BuildTask { protected $title = "Database Migrations"; protected $description = "Provide atomic database changes (not implemented yet)"; public function run($request) { if ($request->param('Direction') == 'down') { $this->down(); } else { $this->up(); } } public function up() {} public function down() {} }