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The road to EmberJs 2.0Lucio Grenzi
ROME 18-19 MARCH 2016
The road to EmberJs 2.0
Who is this guy
FreelanceFront end web developerOver 10 years of
programming experienceOpen source addictedGithub.com/dogwolf
The road to EmberJs 2.0
“A framework for creating ambitous web application”- Emberjs homepage -
Latest version: v 2.4Date of birth: 2011Origin: SproutCore forkMIT LicenseMantained by the Ember.Js CommunityDepends on handlebar.js and jQueryMore than 15000 GitHub stars
The road to EmberJs 2.0
What is Ember.js?
A Javascript framework Based on MVC pattern Client side Single Page App Declarative Two ways data binding*
The road to EmberJs 2.0
AngularJs vs EmberJsAngularJS is a toolset for building the framework most suited to your application development- AngularJs homepage-
A framework for creating ambitous web application”
- Emberjs homepage -
The road to EmberJs 2.0
Philosophy on AngularJsWeb application development needs first class support for data binding, dependency injection and testabilityUse this primitives to build your own high level abstractions specific to your particular application's needs
The road to EmberJs 2.0
Quality of a framework
1. It should be clear where code belongs and where to find it
2. You should have to write and mantain the least code amount of code necessary
3. Change in one area of your app should not affect others areas
The road to EmberJs 2.0
EmberJs Philosophy
Stability without stagnation Big bang releases App rewrites (every new release) Long-lived (custom) branches
The road to EmberJs 2.0
EmberJs release cycleSix weeks release cycleAdd new featuresDeprecates nasty parts of the code
Ember 2.0 only removes features that were deprecated as of Ember 1.13
The road to EmberJs 2.0
What’s new in EmberJs 2.0• Ember CLI• Shift to Components• Glimmer, the new rendering engine• ES6 modules at the core• One-way values by default• Simplification of many Ember concepts:
– New attribute binding syntax– HTML syntax (angle brackets) for
Components– More consistent scoping– much more…
The road to EmberJs 2.0
Ember-cli
The road to EmberJs 2.0
Ember-cli support Handlebars HTMLBars Emblem LESS Sass Compass Stylus CoffeeScript EmberScript Minified JS & CSS
The road to EmberJs 2.0
Ember-cli (cont.)Require Node.js and npmRequire Bower in order to keep your front-end
dependencies up-to-date $npm install -g bower Reccomended PhantomJs in order to use the
automated test runner $npm install -g phantomjs-prebuilt
The road to EmberJs 2.0
Create a new project$ember new my-app Launch a project $cd my-app$ember server Navigate to http://localhost:4200 to see the new
app
The road to EmberJs 2.0
Other usefull commands$ember build Builds the application into the dist/ directory $ember testRun tests with Testem in CI mode. $ember install <addon-name>Installs addon-name into your project and saves it
to the package.json file
The road to EmberJs 2.0
Ember-cli addon systemProvides a way to create reusable units of code Extend the build tool Found all the addons at emberaddons.com
The road to EmberJs 2.0
Emberaddons
The road to EmberJs 2.0
Handlebars 2.xA superset of the Mustache template engine First added to EmberJ 1.9 The focus is keeping the logic out of the template
The road to EmberJs 2.0
<body><script type="text/x-handlebars" id="ember-template" data-
template-name="index"> </b>My videos</b><ul>{{#each video in videos}} <li>{{#link-to 'videos.edit' video}}{{video.title}}{{/link-
to}}</li>{{/each}}</ul></script></body>
The road to EmberJs 2.0
var source = $("#ember-template").html();var template = Handlebars.compile(source);
App.Router.map(function() { this.resource("videos", function(){ this.route("edit", { path: "/:video_id" }); });});
Result:
<ul> <li><a href="/videos/1">My first video</a></li> <li><a href="/videos/2">My second video</a></li> <li><a href="/videos/3">My third video</a></li></ul>
The road to EmberJs 2.0
GlimmerThe render engine, since version 1.13
Takes advantage of the groundwork laid by HTMLBars to dramatically improve re-rendering performance.
Compatible with the full public API of Ember 1.x
The road to EmberJs 2.0
Glimmer (cont.)
Takes advantage of the React-inspired improvements to the Ember programming model
Value-diffing strategy by using a virtual tree of
the dynamic areas of the DOM Supporting efficient re-renders of entire data
structures. Explicit mutation (via set) when it is used
The road to EmberJs 2.0
One-Way BindingsOn Ember 1.x component properties used to be bound two ways.
Property of a component as well as its data source are both mutable.
{{#my-component compName=model.name }}{{/my-component}}
<my-component compName=model.name ></my-component>
The road to EmberJs 2.0
Explicitly a two-way bindingThere is a new mut keyword to explicit the old
behaviour <my-component compName={{mut
model.name}} ></my-component>
The road to EmberJs 2.0
Manage a mutable component
Set the value of the property
this.attrs.compName.update("newcompName");
Show the actual value of the property
this.attrs.firstName.value;
The road to EmberJs 2.0
Ember-dataLibrary for robustly managing model data in your Ember.js applications
Is designed to be agnostic to the underlying persistence mechanism
Uses Promises/A+-compatible promises to manage loading and saving records
The road to EmberJs 2.0
Getting started with Ember-dataVersion >= 2.3 ember-data is a proper Ember-CLI
$ember install ember-data Version < 2.3, add the npm package and add the
dependency via bower:npm install ember-data@v2.2.2 --save-devbower install ember-data --save
The road to EmberJs 2.0
Ember-data flowApplication
Store
Adapter
Cloud
Promise (with records)
Promise (json)
find()
find()
XHR() XHR() returns
The road to EmberJs 2.0
The Store
The store is responsible for managing the lifecycle of your models.
By loading the Ember Data library in your app, all of the routes and controllers in will get a new store property
The road to EmberJs 2.0
The Adapter
The adapter is responsible for translating requests from Ember-data into requests on your server.
The road to EmberJs 2.0
How it woks// app/models/news.jsimport DS from 'ember-data'; export default DS.Model.extend({ title: DS.attr('string'), createdBy: DS.attr('string'), createdAt: DS.attr('date'), comments: DS.hasMany('comment')}); // app/models/comment.jsimport DS from 'ember-data'; export default DS.Model.extend({ message: DS.attr('string'), sentAt: DS.attr('date'), nickname: DS.attr('string'), post: DS.belongsTo('news')});
Retrieve multiple recordsvar newses = this.store.findAll('news'); // => GET /postsvar newses = this.store.peekAll('news'); // => no network
request Query for multiple recordsthis.store.query('news', { filter:
{ createdBy:'Lucio' } }).then(function(param_1) {});
The road to EmberJs 2.0
More intuitive attribute bindings
Ember 1.x (deprecated)
<a {{bind-attr href=url}}>Click here</a>
Ember 2.x
<a href="{{url}}">Click here</a>
The road to EmberJs 2.0
ComponentsBased on of the W3C Web Components specification
The specification is comprised of four smaller specifications; templates, decorators, shadow DOM, and custom elements.
The road to EmberJs 2.0
Ember Components vs. Ember Views EmberJs is a MVC .. V doesn't stand for view? Components are a subclass of Ember.View Views are generally found in the context of a
controller. Views sit behind a template and turn input into a
semantic action in a controller or route.
The road to EmberJs 2.0
Ember Components vs. Ember Views EmberJs component do not have a context, they
only know about the interface that they define Components can be rendered into any context,
making it decoupled and reusable. In order to render properly a component you must
supply it with data that it's expecting
The road to EmberJs 2.0
Anatomy of an Ember Components
An Ember component consists of a Handlebars template file and an accompanying Ember class (if needed extra interactivity with the component).
The road to EmberJs 2.0
Generate an Ember Component $ ember generate component multitabs
This will create three new files a Handlebars file for our HTML app/templates/components/multitabs.hbs a JavaScript file for our component class
app/components/multitabs.js a test file tests/integration/components/multitabs-test.js
The road to EmberJs 2.0
Using the Component
Open the application templateapp/templates/application.hbs Add in the following after the h3 tag to use the
component.
{{multitabs}}
The road to EmberJs 2.0
Add dynamic data
$ ember generate route application
This will generate app/routes/application.js. Open this up and add a model property:
export default Ember.Route.extend({ model: function(){ });});
The road to EmberJs 2.0
Add Polymer to Ember project
$ ember new PolymerProject$ bower install polymer --save
The road to EmberJs 2.0// Brocfile.js ...var EmberApp = require('ember-cli/lib/broccoli/ember-app');...var app = new EmberApp();...var polymer = pickFiles('bower_components/', { srcDir: '', files: [ 'webcomponentsjs/webcomponents.js', 'polymer/polymer.html'// 'polymer/polymer.js' ], destDir: '/assets'}); module.exports = mergeTrees([ polymer, app.toTree()]);
// Index.html...<script src="assets/webcomponentsjs/webcomponents.js"></script>...
The road to EmberJs 2.0
Resources and Referenceshttps://github.com/emberjs/datahttps://github.com/emberjs/rfcs/pull/15http://ember-cli.com/http://code.tutsplus.com/tutorials/ember-
components-a-deep-dive--net-35551http://www.sitepoint.com/understanding-
components-in-ember-2/
The road to EmberJs 2.0
Questions?
https://www.flickr.com/photos/derek_b/3046770021/
Thanks!
ROME 18-19 MARCH 2016
l.grenzi@gmail.comDogwolflucio.grenzi
All pictures belongto their respective authors
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