cakephp表单/日期助手

检验日期 在数据库中以mysql格式。我使用的是日、月和年的cakephp表单帮手。这个我就是这么做的

$this->data['Cabinet']['date_of_inspection'] =
    $this->data['Cabinet']['date_of_inspection']['year'].'-'.
    $this->data['Cabinet']['date_of_inspection']['month'].'-'.
    $this->data['Cabinet']['date_of_inspection']['day'];