Today when I read the articles in Yii forum, I found this nice website: http://www.stay.com, in fact that, i pay more attention with her url-friendly.
for example, under her home page, the urls of the citys are as: http://www.stay.com/london, that is to say, there is not controller name before the city’s name, I am so curority with this, and then i use Yii blog to test how to do it.
[size="5"]1. Set the urlManager of main.php[/size]
protected/config/main.php
'urlManager'=>array(
'class'=>'CUrlManager',
'urlFormat'=>'path',
//'urlSuffix'=>'.html',//Please note that, this value can NOT be used, i will descript the reason below.
'showScriptName'=>false,
'caseSensitive'=>false,//it makes route case-insensitive.
'rules'=>array(
'posts/<tag:.*?>'=>'post/index',
'<controller:\w+>'=>'<controller>',
'<controller:\w+>/<action:\w+>'=>'<controller>/<action>',
'<module:\w+>/<controller:\w+>/<action:\w+>'=>'<module>/<controller>/<action>',
'/'=>'post',
'<titile:.*?>'=>'post/view',
),
),
Ok, now there is a problem, in the rules, [color="#FF0000"]the orders of the values can NOT change![/color] (at least when i testing), because the order will take effect to other url-request!
[size="5"]2. Create a glocal controller[/size]
protected/components/MyController.php
<?php
class MyController extends Controller
{
public function init()
{
//That is why we can NOT set the 'urlSuffix'=>'.html' above in the route
$arrUrl = explode('/', Yii::app()->request->url);
$title = urldecode($arrUrl[count($arrUrl)-1]);
//As you can know, the code below will make slow to every request.
$criteria = new CDbCriteria;
$criteria->condition = "title = '".$title."'";
$criteria->limit = 1;
$model = Post::model()->find($criteria);
if (!empty($model))
{
$_GET['id'] = $model->id;
}
}
}
[size="5"]3. Modify PostController.php，let it to extend MyController[/size]
protected/controllers/PostController.php
<?php
class PostController extends MyController
[size="5"]4. Modify the posts model[/size]
protected/models/Post.php，find this function: getUrl(), change it to:
public function getUrl()
{
return Yii::app()->createUrl($this->title);
}
Now, all the options have been finished, when visiting http://127.0.0.1/blog, then the website runs well, and then check the url of the posts, for example the Welcome!, its url now is http://127.0.0.1/blog/Welcome!, click it, runs well! Going testing other urls, no problems found.
We turn back to see the setting of rules.
'rules'=>array(
'posts/<tag:.*?>'=>'post/index',
'<controller:\w+>'=>'<controller>',
'<controller:\w+>/<action:\w+>'=>'<controller>/<action>',
'<module:\w+>/<controller:\w+>/<action:\w+>'=>'<module>/<controller>/<action>',
'/'=>'post',
'<titile:.*?>'=>'post/view',
),
A. the value ‘<titile:.*?>’=>‘post/view’ has to be the last one, other wise, it will change other url request!
B. Without ‘/’=>‘post’, it will cause “The requested page does not exist.”, at the same time, this value has to been locate in the current place.
C. About ‘<module:\w+>/<controller:\w+>/<action:\w+>’=>’<module>/<controller>/<action>’, in fact that, I haven’t try to find whether or not there is <module:\+>, 
but after adding, the module can run without error (for example, the image of captcha can display or not in a module.)
But, is it really the way to use url-friendly? I think it is very strange in this method.
Please help me and give some ideas about how to use url-friendly, thank you. 
