Obter o last insert id.

Eis a forma de obter o last_insert_id quando estamos a usar as querys Propel em raw sql.

$this->conn = Propel::getConnection();
$query = "INSERT INTO something (something, something)";
$statement = $this->conn->prepare(query);
$result = $statement->execute();

$new_created_id = $this->conn->LastInsertId();