O Guia Definitivo do Yii 1.1

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Gerenciamento de URL
Complete URL management for a Web application involves two aspects. First, when a
user request comes in terms of a URL, the application needs to parse it into
understandable parameters. Second, the application needs to provide a way of creating
URLs so that the created URLs can be understood by the application. For a Yii application,
these are accomplished with the help of CUrlManager.
Creating URLs
Although URLs can be hardcoded in controller views, it is often more flexible to create
them dynamically:
$url=$this->createUrl($route,$params);
Where $this refers to the controller instance; $route specifies the route of the request; and
$params is a list of GET parameters to be appended to the URL.
By default, URLs created by createUrl is in the so-called get format. For example, given
$route='post/read' and $params=array('id'=>100), we would obtain the following URL:
/index.php?r=post/read&id=100
Where parameters appear in the query string as a list of Name=Value concatenated with
the ampersand characters, and the r parameter specifies the request route. This URL
format is not very user-friendly because it requires several non-word characters.
We could make the above URL look cleaner and more self-explanatory by using the socalled
path format which eliminates the query string and puts the GET parameters into the
path info part of URL:
/index.php/post/read/id/100
To change the URL format, we should configure the urlManager application component so
that createUrl can automatically switch to the new format and the application can properly
understand the new URLs: