yiif的Behavior事例

<?phpclass AutoTimestampBehavior extends CActiveRecordBehavior {     /**    * The field that stores the creation time    */    public $created = 'created';    /**    * The field that stores the modification time    */    public $modified = 'modified';      public function beforeValidate($on) {        if ($this->Owner->isNewRecord)            $this->Owner->{$this->created} = new CDbExpression('NOW()');        else            $this->Owner->{$this->modified} = new CDbExpression('NOW()');         return true;        }}

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model：

public function behaviors(){    return array(        'AutoTimestampBehavior' => array(            'class' => 'application.components.AutoTimestampBehavior',            //You can optionally set the field name options here        )    );}

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