Book Image

Zend Framework 2 Application Development

By : Christopher Valles
Book Image

Zend Framework 2 Application Development

By: Christopher Valles

Overview of this book

<p>Zend Framework 2 has a flexible architecture that lets us build modern web applications and web services easily. It also provides an easy-to-use, high quality component library that is designed to be used the way you want. It's easy to get started and produce a powerful and professional looking website with Zend Framework 2 Application Development. Exploring real life applications, we will explore the Zend Framework 2 components, as well as throwing some light on best practices and design concerns faced when building complex MVC applications.Zend Framework 2 Application Development is a hands-on guide to building your application. We will explore the components of this new version of the framework and discover how to use each component, the options available, and how to get the most from each component. Whilst learning everything you need to know, we’ll even create our own social network. We will also learn to engineer an application using an API-centric approach, broadly used today to build applications that work seamlessly on desktops, mobiles and tablets. We will learn how to filter and validate data, interact with databases to retrieve and store data, handle and manipulate file uploads, interact with other websites, deal with spam, and also protect your APIs using OAuth authentication whilst allowing people from all over the world to interact with your application. Zend Framework 2 Application Development is your guide to everything you need to know to build applications of any size for big and small companies alike, whilst using the right components for the job.</p>
Table of Contents (21 chapters)
Zend Framework 2 Application Development
Credits
About the Author
Acknowledgments
About the Reviewers
www.PacktPub.com
Preface
4
The First Request/Response – Building the User Wall
5
Handling Text Content – Posting Text
6
Working with Images – Publishing Pictures
8
Dealing with Spam – Akismet to the Rescue
Index

DispatchListener


One of the big changes on this new version of the framework is that everything is built around events. That's why the dispatchers in just an event listener waiting for the EVENT_DISPATCH event.

When this event is triggered, it will be captured by DispatchListener and this will lead to a few things. Let us see the following code snippet step-by-step to fully understand the dispatch flow:

$routeMatch = $e->getRouteMatch();
$controllerName = $routeMatch->getParam('controller', 'not-found');
$application = $e->getApplication();
$events = $application->getEventManager();
$controllerLoader = $application->getServiceManager()->get('ControllerLoader');

First the listener will retrieve information from the event itself, such as controller, route matched, and the application, and will try to load the controller. Notice that we are passing a second parameter to the $routeMatch->getParam() method; if for any reason the parameter does not exists on the route, this...