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This gist belongs to Clean Code Cookbook http://cleancodecookbook.com By Maximiliano Contieri http://maximilianocontieri.com
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| <? | |
| final class SocialNetworkProfile { | |
| private $userName; | |
| private $friends; | |
| // friends is a reference to a large collection | |
| private $feed; | |
| // feed references the whole user feed | |
| public function __construct( | |
| $userName, | |
| $friends, | |
| UserFeed $feed) { | |
| $this->assertUsernameIsValid($userName); | |
| $this->assertNoFriendDuplicates($friends); | |
| $this->userName = $userName; | |
| $this->friends = $friends; | |
| $this->feed = $feed; | |
| $this->assertNoFriendOfMyself($friends); | |
| } | |
| // Lots of protocol | |
| } | |
| // If you need to transfer | |
| // to an external system you need | |
| // to duplicate (and maintain) the structure | |
| final class SocialNetworkProfileDTO { | |
| private $userName; // duplicated to be synchronized | |
| private $friends; // duplicated to be synchronized | |
| private $feed; // duplicated to be synchronized | |
| public function __construct() { | |
| // Empty constructor without validations | |
| } | |
| // No protocol, just serializers | |
| } | |
| // If you need to transfer to an external system | |
| // you create an anemic DTO | |
| $janesProfileToTransfer = new SocialNetworkProfileDTO(); |
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