php - Codeigniter URI routing and security -

in codeigniter or restful structure, page can route through uri

for example, if @ item list of id: 1 , need create path that:

domain.com/item/view/1 

and in controller

function view() {    $id = $this->uri->segment(3);    //database data , return view... }  

this should standard way implement restful structure. however, when in member system, , item id dependent user, how can protect link?

so other user can not brute force try different id , read other member item.

one approach compare user_id , item_id in each function. if system large means need compare in each function , lot of coding , checking .

are there smarter way reduce overhead / coding ?

thanks

in domain.com/item/view/1, stands base_url/controller/method

so if create controller (item), function (view).

class item extends ci_controller {     public function  __construct()     {         parent::__construct();      }      public function view($id)     {         //so in $id assign 3rd value it.         $new_id = $id;         echo $new_id;     }