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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

Structuring Code in Modules


Let's dig a bit further into one of the Bounded Contexts. Take, for example, the Orders context and examine the structure details. As its name suggests, this Bounded Context is responsible for representing all the flows that an order passes — from its creation up to delivering to the customer who has purchased it. Furthermore, it's an independent Application, so it contains a source code folder and a tests folder. The source code folder contains all the code necessary for this Bounded Context to work: the Domain code, the Infrastructure code, and the Application layer.

The following diagram should illustrate the organization:   

                 

All the code is prefixed with a vendor namespace named in terms of the organization name (BuyIt, in this case), and contains two subfolders: Domain holds all the Domain code, and Infrastructure holds the Infrastructure layer, thereby isolating all the Domain logic from the details of the Infrastructure layer. Following this...

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