public static function migrate($fromVersion, $toVersion, $tableName)
{
if (!is_object($fromVersion)) {
$fromVersion = new VersionItem($fromVersion);
}
if (!is_object($toVersion)) {
$toVersion = new VersionItem($toVersion);
}
if ($fromVersion->getStamp() == $toVersion->getStamp()) {
return;
// nothing to do
}
if ($fromVersion->getStamp() < $toVersion->getStamp()) {
$toMigration = self::createClass($toVersion, $tableName);
if (!is_null($toMigration)) {
// morph the table structure
if (method_exists($toMigration, 'morph')) {
$toMigration->morph();
}
// modify the datasets
if (method_exists($toMigration, 'up')) {
$toMigration->up();
// we don't need the afterUp function anymore!
//if (method_exists($toMigration, 'afterUp')) {
// $toMigration->afterUp();
//}
}
}
} else {
// rollback!
// reset the data modifications
$fromMigration = self::createClass($fromVersion, $tableName);
if (!is_null($fromMigration) && method_exists($fromMigration, 'down')) {
$fromMigration->down();
}
// call the last morph function in the previous migration files
$toMigration = self::createPrevClassWithMorphMethod($toVersion, $tableName);
if (!is_null($toMigration)) {
if (method_exists($toMigration, 'morph')) {
$toMigration->morph();
}
} else {
self::$_connection->dropTable($tableName);
}
}
}