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  • Book Overview & Buying Domain-Driven Design in PHP
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Domain-Driven Design in PHP

Domain-Driven Design in PHP

By : Keyvan Akbary, Carlos Buenosvinos, Christian Soronellas
4.3 (9)
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Domain-Driven Design in PHP

Domain-Driven Design in PHP

4.3 (9)
By: Keyvan Akbary, Carlos Buenosvinos, Christian Soronellas

Overview of this book

Domain-Driven Design (DDD) has arrived in the PHP community, but for all the talk, there is very little real code. Without being in a training session and with no PHP real examples, learning DDD can be challenging. This book changes all that. It details how to implement tactical DDD patterns and gives full examples of topics such as integrating Bounded Contexts with REST, and DDD messaging strategies. In this book, the authors show you, with tons of details and examples, how to properly design Entities, Value Objects, Services, Domain Events, Aggregates, Factories, Repositories, Services, and Application Services with PHP. They show how to apply Hexagonal Architecture within your application whether you use an open source framework or your own.
Table of Contents (16 chapters)
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14
Bibliography
15
The End

Testing Entities


It's relatively easy to test Entities, simply because they're plain old PHP classes with actions derived from the Domain concept they represent. The focus of the test should be the invariants that the Entity protects, because the behavior on the Entities will likely be modeled around those invariants.

For example, and for the sake of simplicity, suppose a Domain Model for a blog is needed. A possible one could be this:

class Post
{
    private $title;
    private $content;
    private $status;
    private $createdAt;
    private $publishedAt;

    public function __construct($aContent, $title)
    {
        $this->setContent($aContent);
        $this->setTitle($title);

        $this->unpublish();
        $this->createdAt(new DateTimeImmutable());
    }

    private function setContent($aContent)
    {
        $this->assertNotEmpty($aContent);

        $this->content = $aContent;
    }

    private function setTitle($aPostTitle)
    {
        $this->assertNotEmpty...
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