codeigniter how to set routes to default controller according to the no of uri segments

问题

I am using codeigniter as a module in my project to display information as categories and its items.

I want the url's like the following

sitename.com/module/ will display all items in random order.
sitename.com/moduel/categoryname/ will display all items in that specific category
sitename.com/module/categoryname/title-of-the-item/ this will display the details of that specific item

here sitename.com/module/ is the root of the codeigniter and the default controller is home.

my question is how to set routes for one segment or uri and two segments of uri like

sitename.com/module/ should load default controller(home in my case)
sitename.com/module/categoryname/ should load home/category/categoryname
sitename.com/module/categoryname/title-of-the-item should load index/title/title-of-the-item

i will have defined my functions as follows

funciton index() ...
function category($categoryname) ....
function title($title)....

so, either i want to create a route according to the num of segments or if there is any other alternate to accomplish this with routing then that is fine.

I want to do it using the routing and not by passing the 2 segments as arguments to Index function.

so, ?

回答1:

Set the base url of the site to sitename.com/module.

You could try database driven routing.
This works by using a database table to write your routes for you.

Example database table;

CREATE TABLE IF NOT EXISTS `app_routes` (
  `id` bigint(20) NOT NULL auto_increment,
  `category` varchar(192) collate utf8_unicode_ci NOT NULL,
  `controller` varchar(64) collate utf8_unicode_ci NOT NULL,
  PRIMARY KEY  (`id`),
  KEY `category` (`category`)
) ENGINE=MyISAM  DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci AUTO_INCREMENT=1;

Example routes;

$route[ 'default_controller' ]  = 'home';
$route[ '404_override' ]        = 'error404';

require_once( BASEPATH .'database/DB'. EXT );
$db =& DB();
$query = $db->get( 'app_routes' );
$result = $query->result();
foreach( $result as $row )
{
    $route[ $row->slug ]                 = 'home/category_lookup/'.$row->slug;
    $route[ $row->slug.'/:any' ]         = 'home/item_lookup/'$row->slug/$1;
    $route[ $row->controller ]           = 'error404';
    $route[ $row->controller.'/:any' ]   = 'error404';
}

This link will give you full details (it is not my work - Google is just my friend).

回答2:

$route['page/(:any)'] = "home/page/$1";
$route['page'] = "home/index";
$route['(:any)/page/(:any)'] = "home/category/$1/page/$2";
$route['(:any)/page'] = "home/category/$1";
$route['page'] = "home/index";

$route['(:any)/(:any)'] = "home/title/$2";
$route['(:any)'] = "home/category/$1";

the last two lines (7 and 8) is what i needed... and that served my purpose

the lines before the last two(1,2,3,4,5) is how i use pagination for the last two lines(7 and 8)

only home/category and home/ has pagination and not home/title which is the end page.

meanwhile, if anybody found the code could be buggy or need perfection then please add an answer so that i can update.

来源：https://stackoverflow.com/questions/14157423/codeigniter-how-to-set-routes-to-default-controller-according-to-the-no-of-uri-s

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codeigniter

url-routing