News Feed
Sections




News Archive
Looking for more information on how to do PHP the right way? Check out PHP: The Right Way

Freek Lijten's Blog:
SOLID - The S is for Single responsibility
March 23, 2012 @ 11:23:59

Freek Lijten has written up a new post to his blog about a set of development principles that have been getting more press in the PHP community lately - SOLID. In his post he starts with a look at the "S" in the set - "Single Responsibility".

The single responsibility principle isn't all that hard to explain. It states that an object should do one thing, and one thing only. [...] A responsibility is a reason to change, and a class should only have one of those. Now all of this may sound abstract and since the objective of this series is to avoid just that we'll just dive into the why now.

He includes some sample code to illustrate, going with an active record implementation, some of the problems that come with a typical setup including issues with unit testing, bad practice of using the data store directly, etc. He shows a refactored code example that splits out the functionality previously all in the one class ("Bike") into three different ones - one is the normal Bike object, another compares the Bikes and the third works with the data store to handle the CRUD for the objects.

0 comments voice your opinion now!
solid development principles single responsibility


blog comments powered by Disqus

Similar Posts

Scott Mattocks: L is for Logging (LUCID)

PHPClasses.org: Book Review: PHP 5 CMS Framework Development

Anthony Ferrara: Our Failure As An Industry

Cal Evans: Let's be honest...

Aaron Wormus' Blog: WS02 at Zend Conf


Community Events





Don't see your event here?
Let us know!


install library series package podcast language interview introduction zendserver laravel opinion symfony tips community api deployment release list framework update

All content copyright, 2014 PHPDeveloper.org :: info@phpdeveloper.org - Powered by the Solar PHP Framework