Design Patterns in PHP and Laravel

© Kelt Dockins 2017

Kelt Dockins, Design Patterns in PHP and Laravel, 10.1007/978-1-4842-2451-9_16

16. Chain of Responsibility

Kelt Dockins¹ 

(1)Dolph, Arkansas, USA

$> git checkout chain_of_responsibility

Intent

Avoid coupling the sender of a request to its receiver by giving more than one object a chance to handle the request. Chain the receiving objects and pass the request along the chain until an object handles it.¹

Applications

Many things in life follow the Chain of Responsibility pattern: the military, businesses, and even casino slot machines. Take, for example, a call to your cell phone company’s customer support. It usually starts with the automated voice system . If that doesn’t satisfy you, then you are transferred to basic tier 1 support, ...