Max URL Levels in Controller Magento 2

Question

I have custom controller outputting JSON format which works well for the below URL level;

** Works
base url/module/folder/action
//equates to Vendor\Module\Controller\Folder\Index.php

However I would like some somewhat deeper nested URL endpoints as per below but I get 404 on controllers deeper that one folder;

**Hit with 404
base url/module/folder/anotherfolder/action
//equates to Vendor\Module\Controller\Folder\Anotherfolder\Index.php

/* or even deeper */

**Hit with 404 - not tested
base url/module/folder/anotherfolder/deeperfolder/action
//equates to Vendor\Module\Controller\Folder\Anotherfolder\Deeperfolder\Index.php

I'm guessing Magento2 doesn't allow deep nested URL types or controllers ...

For me, this deeper nesting would be ideal to have a more manageable controller development & access since we have lost the ability to have multiple actions/endpoints in the one controller (Magento 1.*) (advise if not the case)

Answer 1

For this path

Vendor\Module\Controller\Folder\Anotherfolder\Deeperfolder\Index.php

URL will be

url/module/folder_anotherfolder_deeperfolder/action

As per as magento URL format is

URL/frontenName/ActionFolder/Action

frontenName is defined at routes.xml

ActionFolder locates at Controller folder which can multiple folders path but path will connect via (_) Undescore

Action is the php class.

Answer 2

In Magento Catalog module has very nice and simple example by adding any product to compare.

Url Action Is :-

http://127.0.0.1/magento/catalog/product_compare/index/

Your Layout is :-

catalog_product_compare_index.xml

Folder structure is :-

/vendor/magento/module-catalog/Controller/Product/Compare/Index.php

It's very simple, magento has many examples.