yii框架中的Url生产问题

<?php echo CHtml::link('错误链接','user/register')?>

<?php echo CHtml::link('正确链接',array('user/register'))?>

假定设定了UrlManager的配置为Path模式,用yii默认的配置:

        'urlManager'=>array(
'urlFormat'=>'path',
'rules'=>array(
'<controller:\w+>/<id:\d+>'=>'<controller>/view',
'<controller:\w+>/<action:\w+>/<id:\d+>'=>'<controller>/<action>',
'<controller:\w+>/<action:\w+>'=>'<controller>/<action>',
),
),

上面两行代码会生产什么样的链接地址?

http://<site-addr>/user/register  //错误链接

http://<site-addr>/index.php/user/register  //正确链接

 第一个链接是错误的,浏览器会返回404错误。第二个链接会访问UserController的Register方法。区别就在于第二个链接在生成的时候我们传入的参数是一个array数组,而第一个方法是一个简单字符串。Yii在处理Url的时候,遇到简单字符串会直接使用该字符串作为最终的Url,而当遇到数组的时候会调用Controller的CreateUrl来生成Url.

说到简单字符串,这两个链接中其实有一个非常本质的区别。虽然同样都是字符串'user/register',但是在第一个字符串中就代表一个13个字符的相对路径,而第二个链接中则代表UserController的registerAction,是有着特俗意义的。

附上Yii处理Url的方法NormalizeUrl的源代码:

/**
* Normalizes the input parameter to be a valid URL.
*
* If the input parameter is an empty string, the currently requested URL will be returned.
*
* If the input parameter is a non-empty string, it is treated as a valid URL and will
* be returned without any change.
*
* If the input parameter is an array, it is treated as a controller route and a list of
* GET parameters, and the {@link CController::createUrl} method will be invoked to
* create a URL. In this case, the first array element refers to the controller route,
* and the rest key-value pairs refer to the additional GET parameters for the URL.
* For example, <code>array('post/list', 'page'=>3)</code> may be used to generate the URL
* <code>/index.php?r=post/list&page=3</code>.
*
* @param mixed $url the parameter to be used to generate a valid URL
* @return string the normalized URL
*/
public static function normalizeUrl($url)
{
if(is_array($url))
{
if(isset($url[0]))
{
if(($c=Yii::app()->getController())!==null)
$url=$c->createUrl($url[0],array_splice($url,1));
else
$url=Yii::app()->createUrl($url[0],array_splice($url,1));
}
else
$url='';
}
return $url==='' ? Yii::app()->getRequest()->getUrl() : $url;
}

 

 

你可能感兴趣的:(yii框架)