Yii-Framework: Need Help On Url Rewriting

Hi,
I have developed an entire website in Yii-Framework. I am using Yii Url Rewrite.
http://www.example.com/popular
http://www.example.com/signup
http://www.example.com/wallpaper/108/sexy-babes-1920x1200
etc.

My client asked that he wants url look like
http://www.example.com/popular/
http://www.example.com/signup/
http://www.example.com/wallpaper/108/sexy-babes-1920x1200/

(added slash in the end)

Also he wants that if someone opens
http://www.example.com/popular he/she should redirected to http://www.example.com/popular/

http://www.example.com/wallpaper/108/sexy-babes-1920x1200 he/she should redirected to
http://www.example.com/wallpaper/108/sexy-babes-1920x1200/

He also wants to add this tag on every page of site:
<link rel="canonical" href="http://www.example.com/popular/" />

How to do this?
Please help. I have to deliver this project ASAP.

 

What does your .htaccess file look like now?

 

Hi,

I ended up with this solution:

I placed this code in global controller class constructor(i.e. the class from which all controller classes extend)

$slash = substr($this->request->url, -1);
$url = $this->request->hostInfo.$this->request->url;
if($slash != "/"){
$this->redirect($this->request->url."/",true,301);
$url = $this->request->hostInfo.$this->request->url."/";
}
Yii::app()->getClientScript()->registerLinkTag("canonical",null,$url);