Routing - combing URL segments to form a method name?

[eluser]Prophet[/eluser]
Hello all

Is something like the following possible with CI's routing library?

Code:

$route['admin/product_required_details/(:any)/(:num)/(:any)'] = 'admin/product_required_details/$3_$1/$2';

For example, I would like:

admin/product_required_details/option/5/edit

...to route to:

admin/product_required_details/edit_option/5

(i.e. it should call the edit_option() method and pass 5 as the parameter.

Thanks in advance for any advice.

[eluser]KingSkippus[/eluser]
You could add somewhere close to the top of your option() function something like the code below. Note that I haven't tried it so there might be a syntax error or two, but it should work.

Code:

public function option($id, $subfunc) {
    // Check if $subfunc is a valid function name.
    if (isset($subfunc) && preg_match('/^[a-zA-Z_]\\w*$/', $subfunc)) {
        $redirect = $subfunc.'_'.__FUNCTION__;
        if (method_exists($this, $redirect)) {
            call_user_func(array($this, $redirect), $id);
        }
        else {
            // User specified a method that does not exist.
        }
    }
    else {
        // Subfunction not specified or was an invalid name.
    }
}

[eluser]mddd[/eluser]
I think prophet's own suggestion is fine by itself. In that example, the edit_option method would be called, no problem.
Routes are simply regular expressions, so if you rewrite the url that way, it will work just fine.

[eluser]Prophet[/eluser]
KingSkippus your solution worked perfectly, thank you. I tried my own solution and it didn't seem to work... If I can get CI's routing library to do the work for me that would be great, and much easier to maintain.

[eluser]KingSkippus[/eluser]
Per mddd's suggestion in another thread, you could also try the following:

Code:

$route['admin/product_required_details/([^/]+)/(:num)/([^/]+)'] =
    'admin/product_required_details/$3_$1/$2';