Book Image

Ember.js Cookbook

By : Erik Hanchett
Book Image

Ember.js Cookbook

By: Erik Hanchett

Overview of this book

Ember.js is an open source JavaScript framework that will make you more productive. It uses common idioms and practices, making it simple to create amazing single-page applications. It also lets you create code in a modular way using the latest JavaScript features. Not only that, it has a great set of APIs to get any task done. The Ember.js community is welcoming newcomers and is ready to help you when needed. This book provides in-depth explanations on how to use the Ember.js framework to take you from beginner to expert. You’ll start with some basic topics and by the end of the book, you’ll know everything you need to know to build a fully operational Ember application. We’ll begin by explaining key points on how to use the Ember.js framework and the associated tools. You’ll learn how to effectively use Ember CLI and how to create and deploy your application. We’ll take a close look at the Ember object model and templates by examining bindings and observers. We’ll then move onto Ember components, models, and Ember Data. We’ll show you examples on how to connect to RESTful databases. Next we’ll get to grips with testing with integration and acceptance tests using QUnit. We will conclude by covering authentication, services, and Ember add-ons. We’ll explore advanced topics such as services and initializers, and how to use them together to build real-time applications.
Table of Contents (18 chapters)
Ember.js Cookbook
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Working with application initializers


Application initializers can be used to configure your application as it boots. It's the primary place to set up dependency injections in your application.

In this example, we'll examine when an application initializer is run.

How to do it...

  1. In a new application, create initializer:

    $ ember g initializer application
    

    This will create a new application initializer. This will be run as soon as the application boots.

  2. Add an alert box to the initializer:

    // app/initializers/application.js
    export function initialize( application ) {
        alert('loading application');
    }
    
    export default {
        name: 'application',
        initialize
    };

    This will load an alert box as soon as the application loads.

  3. Run ember server and you should see an alert box displayed before the application is loaded:

    Nothing else has loaded in the application before this alert box is shown.

  4. If needed, we can also register or inject services in the initializer. It may look as follows:

    // app/initializer...