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@mike-north
Last active September 11, 2018 17:45
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cp-key
import Ember from 'ember';
// items: [{price: 3.40, qty: 3.134}, {price: 1.39, qty: 2.2}],
function totalWithRoundedValue(itemsPropName) {
return Ember.computed(`${itemsPropName}.@each.{price,qty}`, function(key) {
// Calculate the new total
let newTotal = this[itemsPropName]
.reduce((tot, item) => tot + (item.price * item.qty), 0);
// Create a rounded value as another property
Ember.set(this, `${key}Rounded`, Math.round(newTotal * 100) / 100);
return newTotal;
})
}
export default Ember.Controller.extend({
appName: 'Ember Twiddle',
items: [{price: 3.40, qty: 3.134}, {price: 1.39, qty: 2.2}],
total: totalWithRoundedValue('items')
});
<h1>Welcome to {{appName}}</h1>
<p>Unrounded: {{total}}</p>
<p>Rounded: {{totalRounded}}</p>
<br>
<br>
{{outlet}}
<br>
<br>
{
"version": "0.15.0",
"EmberENV": {
"FEATURES": {}
},
"options": {
"use_pods": false,
"enable-testing": false
},
"dependencies": {
"jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
"ember": "3.2.2",
"ember-template-compiler": "3.2.2",
"ember-testing": "3.2.2"
},
"addons": {
"ember-data": "3.2.0"
}
}
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