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Observer on hasMany
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| import Ember from 'ember'; | |
| export default Ember.Controller.extend({ | |
| appName: 'Ember Twiddle' | |
| }); |
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| import Model from "ember-data/model"; | |
| import attr from "ember-data/attr"; | |
| import { belongsTo, hasMany } from "ember-data/relationships"; | |
| export default Model.extend({ | |
| title: attr('string') | |
| }); |
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| import Ember from 'ember'; | |
| import Model from "ember-data/model"; | |
| import attr from "ember-data/attr"; | |
| import { belongsTo, hasMany } from "ember-data/relationships"; | |
| export default Model.extend({ | |
| name: attr('string'), | |
| tasks: hasMany('task'), | |
| otherTasks: Ember.computed(() => []) | |
| }); |
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| export default Ember.Route.extend({ | |
| model() { | |
| const tasks = []; | |
| for (let i = 0; i < 20; i++) { | |
| tasks.push(this.store.createRecord('task', { title: `Task ${i}` })); | |
| } | |
| const user = this.store.createRecord('user', {name: 'John' }); | |
| return {user, tasks}; | |
| }, | |
| setupController(ctrl, model) { | |
| this._super(...arguments); | |
| ctrl.set('counter1', 0); | |
| ctrl.set('counter2', 0); | |
| ctrl.set('counter3', 0); | |
| ctrl.set('counter4', 0); | |
| ctrl.set('counter5', 0); | |
| model.user.addObserver('tasks', () => { ctrl.set('counter1', ctrl.get('counter1') + 1) }); | |
| model.user.addObserver('tasks.[]', () => { ctrl.set('counter2', ctrl.get('counter2') + 1) }); | |
| model.user.addObserver('otherTasks', () => { ctrl.set('counter3', ctrl.get('counter3') + 1)}); | |
| model.user.get('tasks').addArrayObserver(this, { | |
| willChange: () => ctrl.set('counter4', ctrl.get('counter4') + 1), | |
| didChange: () => ctrl.set('counter5', ctrl.get('counter5') + 1) | |
| }); | |
| }, | |
| actions: { | |
| setMoreTasks(user, tasks) { | |
| user.set('tasks', tasks.slice(0, user.get('tasks').toArray().length + 1)); | |
| user.set('otherTasks', tasks.slice(0, user.get('otherTasks.length') + 1)); | |
| } | |
| } | |
| }); |
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| { | |
| "version": "0.10.1", | |
| "EmberENV": { | |
| "FEATURES": {} | |
| }, | |
| "options": { | |
| "use_pods": false, | |
| "enable-testing": false | |
| }, | |
| "dependencies": { | |
| "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js", | |
| "ember": "2.6.0", | |
| "ember-data": "2.6.1", | |
| "ember-template-compiler": "2.6.0" | |
| }, | |
| "addons": {} | |
| } |
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