How to set default controller inside n subfolder in codeigniter 3 - php

Question

-Myproject
-application
-controllers
-subfolder1
-subfolder2
-subfolder3
-subfolder(..n)
Controller.php
And need to set routes.php
$route['default_controller'] = 'subfolder1/subfolder2/subfolder3/subfolder(..n)/controller';

Answer 1

According to the examples in the docs it does not appear that you can put a Controller more than one level deep inside a subdirectory.
example.com/index.php/subdirectory/controller/function
I also don't think your route looks correct. You would not have home/ at the start of the route unless "home" is a controller or subdirectory name. See examples here.
$route['default_controller'] = 'subdirectory/controller';

Answer 2

I have researched and found in codeigniter 3 system/core/Router.php library file's method _set_default_controller() can not support default controller in subfolder. So i have overrided/ customized this method _set_default_controller() and now it supports n level subfolders and working fine for me.
I have created application/core/MY_Router.php with the below code to override this method _set_default_controller()
<?php
/**
* Override Set default controller
*
* #author : amit
*
* #return void
*/
protected function _set_default_controller()
{
if (empty($this->default_controller))
{
show_error('Unable to determine what should be displayed. A default route has not been specified in the routing file.');
}
// Is the method being specified?
$x = explode('/', $this->default_controller);
$dir = APPPATH.'controllers'; // set the controllers directrory path
$dir_arr = array();
foreach($x as $key => $val){
if(!is_dir($dir.'/'.$val)){
// find out class i.e. controller
if(file_exists($dir.'/'.ucfirst($val).'.php')){
$class = $val;
if(array_key_exists(($key+1), $x)){
$method = $x[$key+1]; // find out method i.e. action
}else{
$method = 'index'; // default method i.e. action
}
}else{
// show error message if the specified controller not found
show_error('Not found specified default controller : '. $this->default_controller);
}
break;
}
$dir_arr[] = $val;
$dir = $dir.'/'.$val;
}
//set directory
$this->set_directory(implode('/', $dir_arr));
$this->set_class($class);
$this->set_method($method);
// Assign routed segments, index starting from 1
$this->uri->rsegments = array(
1 => $class,
2 => $method
);
log_message('debug', 'No URI present. Default controller set.');
}
?>
Now we can set default controller in application/config/routes.php like below
// without action method name
$route['default_controller'] = 'subfoler1/subfoler2/subfolder3/subfolder(..n)/controller';
OR
// with action method name
$route['default_controller'] = 'subfoler1/subfoler2/subfolder3/subfolder(..n)/controller/action';
If we will pass the action method name it will detect that method as action and if we will not pass action name then it will assume index as a action.