How to route 2 parameters to a controller?

问题:

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.

回答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';

回答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

回答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 :)