[PHP]Yii2框架的坑.md—/Users/zjh/Documents/我的文章/[PHP]Yii2框架的坑

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/**
 * @property integer $id
 * @property string $name
 * @property string $detail
 * @property double $price
 * @property integer $area
 **/
class OcRoom extends ActivieRecord
{
    ...
}

$room = OcRoom::find()      //先取出一个对象。
    ->select(['id'])        //只取出'id'列
    ->where(['id'=>20])
    ->one();
$room->save();              //保存，会发现此行的其它字段都被写成默认值了。

/**
 * @property integer $id
 * @property string $name
 **/
class OcRoom extends ActiveRecord
{
    public function rules()
    {
        return [['name','string','min'=>2,'max'=>10]];
    }
    ...
}
class OcHouse extends ActiveRecord
{
    public function rules()
    {
        return [['name','string','max'=>10]];
    }
    ...
}

$a = new OcRoom();
$a->name = '';                //name为空字符串，不满足rules()条件。

$b = new OcHouse();
$b->name = '我的房间';         //name合法，可以保存。

$transaction = Yii::$app->db->beginTransaction();
try{
    $a->save();               //name字段不合法，无法验证通过，在validate()阶段已经返回false,不会进行数据库存储的步骤，所以也不会抛出异常。
    $b->save();               //name字段合法，可以正常保存。

    $transaction->commit();   //提交后，发现$a保存失败，而$b保存成功。
}
catch (Exception $e)
{
    Yii::error($e->getTraceAsString(),__METHOD__);
    $transaction->rollBack();
}

OcRenterBill extends ActiveRecord
{
    public function rules()
    {
        return [
            ['start_time','date','format'=>'Y-m-d'],
        ];
    }
}

$a = new OcRenterBill();
$a = '2015-09-12';
$a->save();                 //会报错，说格式不对。