How to route 2 parameters to a controller? - codeigniter

Question

This seems really basic but i can't get the hang of it.
I'm trying to send more then one parameter to a method in the controller, like this :
http://localhost/ci/index.php/subjects/3/state
This is the routings i've tried :
$route['subjects/(:num)'] = 'subjects/view/$1';
$route['subjects/(:num)/{:any}'] = 'subjects/view/$1/$2';
the method accepted 2 paremeters :
public function view($slug, $id = null){
}
but i seem to get a 404. How can i get this to work? i need the view method to always accept 1 parameter and optional other parameters.
NOTE : I am including the url helper.

Answer 1

you have problem with your route brackets just change it from {} to () brackets will work
from
$route['subjects/(:num)/{:any}'] = 'subjects/view/$1/$2';
to
$route['subjects/(:num)/(:any)'] = 'subjects/view/$1/$2';

Answer 2

Always maintain your routing rules
like
$route['subjects/(:num)/(:any)/(:any)/(:any)'] = 'subjects/view/$1/$2/$3/$4';
$route['subjects/(:num)/(:any)/(:any)'] = 'subjects/view/$1/$2/$3';
$route['subjects/(:num)/(:any)'] = 'subjects/view/$1/$2';
always follow this pattern for routing
if you add like this
$route['subjects/(:num)/(:any)'] = 'subjects/view/$1/$2';
$route['subjects/(:num)/(:any)/(:any)/(:any)'] = 'subjects/view/$1/$2/$3/$4';
$route['subjects/(:num)/(:any)/(:any)'] = 'subjects/view/$1/$2/$3';
then always first condition will be true every time.
also refer this link --> codeigniter routing rules

Answer 3

I once tried this URI pattern
$route['(:any)'] = 'welcome/list1/$1';
$route['(:any)/(:num)'] = 'welcome/list1/$1/$2';
$route['(:any)/(:any)'] = 'welcome/list2/$1/$2';
$route['(:any)/(:any)/(:num)'] = 'welcome/list2/$1/$2/$3';
$route['(:any)/(:any)/(:any)'] = 'welcome/list3/$1/$2/$3';
but it didnt worked ... so I replaced it with regular expression
([a-z 0-9 -]+) replaced (:any)
and
([0-9]+) replaced (:num)
so it became
$route['([a-z 0-9 -]+)'] = 'welcome/list1/$1';
$route['([a-z 0-9 -]+)/([0-9]+)'] = 'welcome/list1/$1/$2';
$route['([a-z 0-9 -]+)/([a-z 0-9 -]+)'] = 'welcome/list2/$1/$2';
$route['([a-z 0-9 -]+)/([a-z 0-9 -]+)/([0-9]+)'] = 'welcome/list2/$1/$2/$3';
$route['([a-z 0-9 -]+)/([a-z 0-9 -]+)/([a-z 0-9 -]+)'] = 'welcome/list3/$1/$2/$3';
And it worked for me :)
In order to access the variables in your controllers, you can assign any parameter in the function.
class Welcome extends CI_Controller {
public function list($first, $second)
{
var_dump($first);
var_dump($second);
}
}