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

Using Ember validations


Data form validation is a very common use case in web development. The end user will know immediately if they've made a mistake when you create validation rules in your application.

In this recipe, we'll take a look at two examples on validation. In the first example, we'll use a component and check data based on a few simple validation rules. In the second example, we'll use a popular Ember add-on to make things easier.

How to do it...

  1. In a new application, create two components and install the validation add-on:

    $ ember g component val-example
    $ ember g component val-example2
    $ ember install ember-cp-validations
    

    The val-example component will be the first example. The val-example2 component will be the second example using the ember-cp-validations add-on.

  2. Update the val-example.hbs component template file:

    // app/templates/components/val-example.hbs
    Enter Age:<br>
    {{input value=num}}
    <button {{action 'check'}}>Check</button><br>
    {{error}}&lt...