Organizing URI segments in codeigniter - codeigniter

Question

function orders(){
$order_id = $this->uri->segment(3);
if($order_id){
$data['main_content'] = "admin-order-page";
$data['order_id'] = $order_id;
$this->load->view("includes/cp-template",$data);
}else{
$data['main_content'] = "admin-orders";
$this->load->view("includes/cp-template",$data);
}
}
Above is my orders method in my controller, so www.myexample.com/orders
I'm wondering what is the proper way of handling information passed in the url. In my example, you have just /orders going to a particular view, and if a id is appended, /orders/23, it will go to a product page.
I now want to add pagination on my /orders view, and will want to pass the page number in the url, like /orders/page/2. Should I just add some more logic looking for the uri of "page"?
Is there a better way of organizing all of this?

Answer 1

If you have an url like www.myexample.com/orders/page/2/4 you can read the arguments as example below:
class Orders extends CI_Controller{
public function __contruct()
{
parent::__contruct();
}
public function page($page_number, $limit)
{
echo 'page number ' . $page_number . ' with limit of ' . $limit;
//the above line prints: "page number 2 with limit of 4"
}
}
Remember that the URI patter is builded according to:
domain.com/{controller}/{function}/{parameter 1} ... , {parameter N}