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@Gaurav0
Last active May 27, 2020 17:40
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array recompute
import Controller from '@ember/controller';
import { action } from '@ember/object';
import { tracked } from '@glimmer/tracking';
export default class ApplicationController extends Controller {
appName = 'Ember Twiddle';
@tracked
fruits = [
'apples',
'oranges',
'cherries'
];
@tracked
fruit = '';
@action
updateFruit(ev) {
this.fruit = ev.target.value;
}
@action
addFruit() {
this.fruits.addObject(this.fruit);
}
}
import Helper from '@ember/component/helper';
import { observer } from '@ember/object';
import { tracked } from '@glimmer/tracking';
export default Helper.extend({
@tracked
param: null,
onMutation: observer('param.[]', function() {
this.param = [...this.param];
}),
compute([param]) {
this.param = param;
return param.length;
}
});
import Helper from '@ember/component/helper';
import { observer } from '@ember/object';
export default Helper.extend({
param: null,
onMutation: observer('param.[]', function() {
this.recompute();
}),
compute([param]) {
this.set('param', param);
return param.length;
}
});
<h1>Welcome to {{this.appName}}</h1>
<br>
<br>
{{#each fruits as |fruit|}}
{{fruit}}<br>
{{/each}}
<br>
<br>
<input type="text" id="fruitToAdd" value={{this.fruit}} {{on "input" this.updateFruit}} />
<button {{on "click" this.addFruit}}>Add</button><br>
<br>
{{len this.fruits}}<br>
{{len2 this.fruits}}<br>
{
"version": "0.17.1",
"EmberENV": {
"FEATURES": {},
"_TEMPLATE_ONLY_GLIMMER_COMPONENTS": false,
"_APPLICATION_TEMPLATE_WRAPPER": true,
"_JQUERY_INTEGRATION": true
},
"options": {
"use_pods": false,
"enable-testing": false
},
"dependencies": {
"jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.js",
"ember": "3.18.1",
"ember-template-compiler": "3.18.1",
"ember-testing": "3.18.1"
},
"addons": {
"@glimmer/component": "1.0.0",
"ember-data": "3.18.0"
}
}
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