/**
* Saves the model
*
* @param Model $obj
*/
public function save(Model $obj)
{
$table = $this->tableName();
$data = $obj->persistableData();
$columns = join(', ', array_keys($data));
$values = array_values($data);
$stm = $this->db->prepare("INSERT INTO {$table} ({$columns}) VALUES (" . trim(str_repeat('?, ', count($values)), ', ') . ')');
$stm->execute($values);
}
