Persistence in PHP with Doctrine ORM

Kevin Dunglas

• Publisher: Packt Publishing
• Year: 2013
• ISBN:
  9781782164104
• Edition: 1
• Topic: Computer Science
• Subtopic: Programming in PHP
• Index: Computer Science

In Detail

Doctrine 2 has become the most popular modern persistence system for PHP. It can either be used as a standalone system or can be distributed with Symfony 2, and it also integrates very well with popular frameworks. It allows you to easily retrieve PHP object graphs, provides a powerful object-oriented query language called DQL, a database schema generator tool, and supports database migration. It is efficient, abstracts popular DBMS, and supports PHP 5.3 features.

Doctrine is a must-have for modern PHP applications.

Persistence in PHP with Doctrine ORM is a practical, hands-on guide that describes the full creation process of a web application powered by Doctrine. Core features of the ORM are explained in depth and illustrated by useful, explicit, and reusable code samples.

Persistence in PHP with Doctrine ORM explains everything you need to know to get started with Doctrine in a clear and detailed manner.

From installing the ORM through Composer to mastering advanced features such as native queries, this book is a full overview of the power of Doctrine. You will also learn a bunch of mapping annotations, create associations, and generate database schemas from PHP classes. You will also see how to write data fixtures, create custom entity repositories, and issue advanced DQL queries. Finally it will teach you to play with inheritance, write native queries, and use built-in lifecycle events. If you want to use a powerful persistence system for your PHP application, Persistence in PHP with Doctrine ORM is the book you.

Approach

Persistence in PHP with Doctrine ORM is a concise, fast, and focused guide to build a blog engine with advanced features such as native queries and lifecycle callbacks.

Who this book is for

This book is primarily intended for PHP developers and architects who want to increase their skills in the field of Persistence and ORM to map the data they are working on to objects they are using in programming. Basic knowledge of databases and PDO and working knowledge of PHP namespaces is a prerequisite.

Persistence in PHP with Doctrine ORM

---

Table of Contents

Persistence in PHP with Doctrine ORM

Credits

About the Author

About the Reviewers

www.PacktPub.com

Support files, eBooks, discount offers and more

Why Subscribe?

Free Access for Packt account holders

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Downloading the example code

Errata

Piracy

Questions

1. Getting Started with Doctrine 2

Prerequisites

Understanding the concepts behind Doctrine

Creating a project structure

Installing Composer

Installing Doctrine

Bootstrapping the app

Using Doctrine's Entity Manager

Configuring Doctrine command-line tools

Summary

2. Entities and Mapping Information

Creating the Entity class

Generating getters and setters

Mapping with Doctrine annotations

Knowing about the @Entity annotation

Understanding the @Table, @Index, and @UniqueConstraint annotations

Diving into the @Column annotation

Knowing about the @Id and @GeneratedValue annotations

Using other annotations

Understanding Doctrine Mapping Types

Creating the database schema

Installing Data fixtures

Creating a simple UI

Listing posts

Creating and editing posts

Deleting posts

Summary

3. Associations

Getting started with the Doctrine associations

Understanding the @ManyToOne and @OneToMany annotations with the comment system

Creating the Comment entity class (owning side)

Adding the inverse side to the Post entity class

Updating the database schema

Adding fixtures for the comments

Listing and creating comments

Updating the index

Understanding the @ManyToMany annotation with tags

Creating the Tag entity class (inverse side)

Updating the Post entity class (owning side)

Updating the schema again

Creating tag fixtures

Managing the tags of a post

Summary

4. Building Queries

Understanding DQL

Using the entity repositories

Creating custom entity repositories

Getting started with Query Builder

Filtering by tag

Counting comments

Summary

5. Going Further

Implementing inheritance

Using Mapped Superclasses

Using Single Table Inheritance

Using Class Table Inheritance

Getting started with events

Lifecycle callbacks

Knowing about event listeners and event subscribers

Writing native queries

The NativeQuery class

Doctrine DBAL

Summary

Index

Persistence in PHP with Doctrine ORM

Copyright © 2013 Packt Publishing

All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews.

Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the author, nor Packt Publishing, and its dealers and distributors will be held liable for any damages caused or alleged to be caused directly or indirectly by this book.

Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information.

First published: December 2013

Production Reference: 1111213

Published by Packt Publishing Ltd.

Livery Place

35 Livery Street

Birmingham B3 2PB, UK.

ISBN 978-1-78216-410-4

www.packtpub.com

Cover Image by Gagandeep Sharma (<[email protected]>)

Credits

Author

Kévin Dunglas

Reviewers

Kirill Chebunin

Stefan Kleff

Adam Prager

Chris Woodford

Acquisition Editor

Harsha Bharwani

Lead Technical Editor

Vaibhav Pawar

Technical Editors

Nadeem N. Bagban

Venu Manthena

Sebastian Rodrigues

Copy Editors

Alisha Aranha

Sarang Chari

Deepa Nambiar

Gladson Monteiro

Shambhavi Pai

Kirti Pai

Project Coordinator

Ankita Goenka

Proofreader

Bernadette Watkins

Indexer

Tejal Daruwale

Graphics

Sheetal Aute

Abhinash Sahu

Production Coordinator

Arvindkumar Gupta

Cover Work

Arvindkumar Gupta

About the Author

Kévin Dunglas is the co-founder and CEO of La Coopérative des Tilleuls, a French IT company specializing in e-commerce, owned and managed by its workers themselves. He is also a software architect who works for a lot of companies, including Ubisoft and SensioLabs (creator of Symfony), as an external contractor. He contributes to open source software (especially Symfony, JavaScript, and Ubuntu ecosystems) and has been writing a technical blog for more than 10 years.

About the Reviewers

Kirill Chebunin is a software engineer specializing in server-side web development. His main interests lie in the field of systems with complex background logic. He has been working as the head of a PHP development department, building different enterprises, and billing and analytics systems for the last two years. But his real passion is for open source projects and their communities. Kirill's talks can be found in Russian and Ukrainian PHP conferences, and his commits are presented in Composer, Doctrine, and Symfony projects. You can always see his current interests at Github (https://github.com/chebba) and SlideShare (http://www.slideshare.net/chebba).

Stefan Kleff has been developing web applications for over 12 years at various positions in various companies. He holds degrees from the University of Appli...

Table of contents

• Persistence in PHP with Doctrine ORM