We can pass values from views to controller 2 ways.

Method 1 :

        URI sement method.
In view,

<a href="controller/method/your values">Pass values</a>

In controller,

$value=$this->uri->segment(3);


Method 2 : 

        Normal get method.

 In view,

<a href="controller/method?id=10">Pass values</a>

In controller,

$value=$this->input->get("id");