El viaje de Angular1 a Angular2
Antonio de la Torre
#DevFestAsturias 03/11/2016
@adelatorrefoss
Angular
“AngularJS is a structural framework for dynamic web apps. It lets you use HTML as your template language and lets you extend HTML's syntax to express your application's components clearly and succinctly. Angular's data binding and dependency injection eliminate much of the code you would otherwise have to write.
Angular teaches the browser new syntax through a construct we call directives.“
https://docs.angularjs.org/guide/introduction
Oyendo hablar de Angular2 desde el verano pasado (2015)y que Angular 1 está muerto.
Antonio de la TorreSoftware Developer
Me mudé en Julio tras 12 años en Madrid
#Movembermobro.co/tonodelatorre
¿Qué aporta Angular?
● Completo.● Te ahorra la fontanería.● Bien documentado.● Mucha comunidad.● Patrón reconocido MVC.● ES6.● Opinionado
(pero si no te gusta tengo otra)
Mundo viejuno
aka Angular < 1.5
Ejemplo de código: https://angularjs.org/#create-components
fromangular.module('directives')
.directive('pony', function(){
return {
scope: {
name: '='
},
controllerAs: 'vm',
controller: function($scope){
var vm = this;
vm.name = $scope.name;
// we have to add a watcher on $scope.name to make this work
$scope.$watch('name', function(newName){
vm.name = newName;
});
},
template: '<p>{{vm.name}}</p>'
}
});
toangular.module('directives')
.directive('pony', function(){
return {
bindToController: {
name: '='
},
controllerAs: 'vm',
scope: true,
controller: function(){},
template: '<p>{{vm.name}}</p>'
}
});
Componentes
React es lo que está de moda
Los COMPONENTES están de moda
ReduxFlux
https://facebook.github.io/flux/docs/overview.html#structure-and-data-flowFlux
https://egghead.io/series/getting-started-with-reduxRedux
Three Principles of ReduxSingle source of truth
The state of your whole application is stored in an object tree within a single store.
State is read-only
The only way to change the state is to emit an action, an object describing what happened.
Changes are made with pure functions
To specify how the state tree is transformed by actions, you write pure reducers.http://redux.js.org/docs/introduction/ThreePrinciples.html
https://css-tricks.com/learning-react-redux/
https://css-tricks.com/learning-react-redux/
Javascript Fatigue
“The Javascript pendulum has swung from restrictive, monolithic frameworks to
modular, boilerplate-hindered libraries.”
Eric Clemmons
https://medium.com/@ericclemmons/javascript-fatigue-48d4011b6fc4#.nzcp66xkh
Javascript Fatigue Fatigue
Don’t try to know everything – it’s impossible in modern web development.
I find it important to remain human. Don’t overdo discipline, don’t become a life improvement
machine. Periods of boredom and doing nothing are important for recuperating and inspiration.
Axel Rauschmayerhttp://www.2ality.com/2016/02/js-fatigue-fatigue.html
Guías de estilovienen en nuestra ayuda
Guías de estilo de John Papa y Todd Motto
para Angular 1.4 mejoró la situación
https://github.com/johnpapa/angular-styleguide/blob/master/a1/README.md
https://github.com/toddmotto/angular-styleguide
Y Angular crea
.component()
Aparece Angular 1.5 (febrero 2016)
última release 1.x => 2.0
Angular 1 Changelog1.3.0 superluminal-nudge (2014-10-13)
1.4.0 jaracimrman-existence (2015-05-26)
1.3.20 shallow-translucence (2015-09-29)
1.5.0 ennoblement-facilitation (2016-02-05)
1.2.30 patronal-resurrection (2016-07-21) only version branch that supports IE8
1.5.8 arbitrary-fallbacks (2016-07-22)
1.4.13 croaking-elderweed (2016-10-10)
1.6.0-rc.0 bracing-vortex (2016-10-26)https://github.com/angular/angular.js/blob/master/CHANGELOG.md
Angular 2 Changelog2.0.0-alpha.27 (2015-06-17)
2.0.0-alpha.55 (2015-12-15)
2.0.0-beta.17 (2016-04-28)
2.0.0-rc.0 (2016-05-02)
2.0.0-rc.7 (2016-09-13)
2.0.0 proprioception-reinforcement
(2016-09-14)
https://github.com/angular/angular/blob/master/CHANGELOG.md
2.1.0 incremental-metamorphosis
(2016-10-12)
2.2.0-beta.1 (2016-10-27)
2.1.2 (2016-10-27)
La arquitectura de componentes en Angular 1.5
La arquitectura de componentes
● Solo controlan su propia vista y datos● Tienen una API bien definida● Una aplicación es un árbol de componentes
● Eliminó la magia negra de las directivas● No hace falta conocer el ciclo de compilación a fondo● No es necesario acceder al $scope
ES6
Clases
Módulos
Arrow function
Array (y nuevos tipos)
...
Migrating from 1.4 to 1.5https://docs.angularjs.org/guide/migration
Angular 1.5 takes a big step towards preparing developers for a smoother transition to
Angular 2 in the future. Architecting your applications using components, multi-slot
transclusion, one-way bindings in isolate scopes, using lifecycle hooks in directive
controllers and relying on native ES6 features (such as classes and arrow functions) are
now all possible with Angular 1.5.
Ejemplo de código: https://docs.angularjs.org/guide/component
Guía de estilo Angular 1.5 de Todd MottoScope
- Stateful components
- Stateless components
Directives
- Directives should be used solely for decorating the DOM.
Eventos
- Comunicación con el padre por eventos. $event
Pasar datos de componentes hacia arriba:
About events
https://toddmotto.com/angular-1-5-lifecycle-hooks
Okay, bear with me, we’re in the final phase. This is where things get… interesting.
Instead of just passig back this.user into the function, we’re going to fake an $event
Object, which complies with how Angular 2 does this (using EventEmitter), and also
provides global consistency between your templates to fetch data back through the
$ctrl.updateUser($event); call we delegate down into the child component. The $event
argument is a real thing in Angular, you can use it with ng-submit and so on. If you
remember this function:
El lío del router
● ngRoute para v1.4● ngComponentRouter para v1.5● RouterModule para v2● ui-router (estándar de facto en todas)
Angular 2
Ventajas● Componentes● Independiente de la plataforma● Web workers● Server side rendering● Typescript ● Rx
http://slides.com/gruizdevilla/angular-2-workshop#/https://www.youtube.com/watch?v=7vSPfmHWIjA
tipos
anotaciones
RxJS
eventos
Event SourcingMartin Fowler (2005)
Ventajas● ES6 (Módulos y clases)● No ng-class, no ng-click, all are DOM native
attributes.
An Angular 2 Force Awakens - John PapaNg Conf 2016 4 May
some code...<html>
<head>
<title>Angular 2</title> </head>
<!-- ... -->
<body>
<my-app>Loading...</my-app>
</body>
</html>
https://angular.io/docs/ts/latest/tutorial/toh-pt1.html
some code...import { Component } from '@angular/core';
export class Hero {
id: number;
name: string;
}
@Component({
selector: 'my-app',
template: `
<h1>{{title}}</h1>
<h2>{{hero.name}} details!</h2>
<div><label>id: </label>{{hero.id}}</div>
<div>
<label>name: </label>
<input [(ngModel)]="hero.name"
placeholder="name">
</div>
`})
export class AppComponent {
title = 'Tour of Heroes';
hero: Hero = {
id: 1,
name: 'Windstorm'
};
}
some code...import { Component } from '@angular/core';
export class Hero {
id: number;
name: string;
}
const HEROES: Hero[] = [
{ id: 11, name: 'Mr. Nice' },...];
@Component({
selector: 'my-app',
template: `
<h1>{{title}}</h1>
<h2>My Heroes</h2>
<ul class="heroes">
<li *ngFor="let hero of heroes"
[class.selected]="hero === selectedHero"
(click)="onSelect(hero)">
<span class="badge">{{hero.id}}</span>
{{hero.name}}
</li>
</ul>
<div *ngIf="selectedHero">
<h2>{{selectedHero.name}} details!</h2>
<div><label>id: </label>{{selectedHero.id}}</div>
<div>
<label>name: </label>
<input [(ngModel)]="selectedHero.name"
placeholder="name"/>
</div>
</div>
`,
styles: [`...`]
})
export class AppComponent {
title = 'Tour of Heroes';
heroes = HEROES;
selectedHero: Hero;
onSelect(hero: Hero): void {
this.selectedHero = hero;
}
}
Guías de estilo (otra vez)
Angular 2 Style Guide by John Papa
The Angular 2 Style Guide
https://github.com/johnpapa/angular-styleguide/blob/master/a2/README.md
“The Angular 2 Style Guide has been moved
to the Official Angular 2 docs.”
Angular 2 migration guide by Todd Motto
“Convert your Angular 1 knowledge into Angular 2.
Select a topic and start learning!”
http://ngmigrate.telerik.com/
Formación!
CursosEgghead
https://egghead.io/technologies/angular2
John Papa
https://www.pluralsight.com/blog/software-development/john-papa-angular2
John's newest Pluralsight course: Angular 2: First Look
Conferenciashttps://github.com/mikedice/ngconf2016-slides/blob/master/ngconf-slides.md
Publicado el 4 may. 2016
http://angularconnect.com/2016/sessions/
Publicado el 27 sept. 2016
Combo!
Angular + ReduxManaging state with Redux and Angular 1
http://blog.rangle.io/managing-state-redux-angular/
Angular 1.x Redux: Introduction
https://egghead.io/courses/getting-started-with-redux
Build Redux Style Applications with Angular2, RxJS, and ngrx/store
https://egghead.io/courses/building-a-time-machine-with-angular-2-and-rxjs
¿Qué tal el viaje?
¿Tiene sentido?
gracias
@adelatorrefoss