Set a Custom Layout in CakePHP 3 & 4

Setting a different layout in CakePHP is very easy.  In your function, simply specify the new layout:

Note: These are the same for CakePHP3 and CakePHP4.

$this->viewBuilder()->setLayout('template-2');

Note: you must have a corresponding file in your \templates\layout folder.  For CakePHP3, the folder is \src\Template\layout\.