configuring dynamic url's in router - codeigniter

Question

I'm using Codeigniter. Basically what I want is to remove the Controller name (Home) from the url.
Those urls look like:
http://localhost/mechanicly/Home
http://localhost/mechanicly/Home/about
http://localhost/mechanicly/Home/contactus
now there are two ways I can remove the Home controller:
static definition of every url inside route:
$route['about'] = "Home/about";
$route['contactus'] = "Home/contactus";
I can use call backs in routes in Codeigniter:
$route['(.+)'] = function ( $param ) {
if( strpos( $param, "Admin" ) !== false ) {
echo $param;
return "Admin/".$param;
}
else{
echo $param;
return "Home/".$param;
}
};
this logic is much better as it is generic and I don't have to create new routes every time for new method inside the controller.
It is working fine for the client controller which is Home but I have another controller named as Admin and I want to redirect Admin requests to the Admin controller and Home request to the Home Controller.
Why does above code work fine for the Home controller but returns
not found
when I validate for the Admin controller?
I am using CI version 3.x

Answer 1

If you really want to get crazy, you could parse the methods from the controller file and programatically create the "static" approach.
Pseudo code here
$controller_file_contents = file_get_contents('path/to/controller.php');
$controller_methods = function_that_parses_methods_from_file($controller_file_contents);
foreach ($controller_methods as $controller_method) {
$route[$controller_method] = "Home/" . $controller_method;
}
How function_that_parses_methods_from_file works is probably gonna involve a regex, something like function \w+. If you go with this approach, try to keep the controller as small as possible by offloading as much logic as possible into models, which is often a good idea anyways. That way the performance impact in the router is as small as possible.
Alternatively, you may be able to parse the controller using get_class_methods if you can figure out how to load the controller into memory inside the router without conflicting when you need to load the controller using the router or causing too much performance issues.
Pretty goofy, but every method you create in that controller will automatically create a route.

Answer 2

you can create your menu(url´s) from db like
tbl_menu tbl_level
---------- -------------
id id
fk_level level
name dateUP
dateUP active
active
In your controllers you need to call the correct menu by session or wherever you want
then you can has this in your route.php
$route['(.+)'] = 'int_rout/routing/' . json_encode($1);
in your controller Int_rout.php
public function routing ( $param ) {
$routing = json_decode($param);
$routing = explode('/', $routing);
//$menu -> get menu from model
foreach($menu as $item){
if($routing[0] === $item->name){
//$level -> get level from model
$redirect = $level->level;
}
}
//the final redirect will be like
//admin/user or admin/user/12
//public/us
$params = ( empty($routing[1])) ? '' : '/' . $routing[1];
redirect($redirect . '/' . $routing[0] . $params, 'refresh');
}