Created
August 20, 2016 20:22
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Aurelia Observer Issue
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| <template> | |
| <div> | |
| <label>id</label> | |
| <label>rate</label> | |
| <label>qty</label> | |
| <span>amt</label> | |
| </div> | |
| <div repeat.for="order of orders"> | |
| <label>${order.id}</label> | |
| <label>${order.rate}</label> | |
| <label>${order.qty}</label> | |
| <span>${order.amount}</label> | |
| </div> | |
| <button type="button" click.delegate="addOrder()">Add new person</button> | |
| </template> |
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| import {inject, BindingEngine, TaskQueue} from 'aurelia-framework'; | |
| @inject(BindingEngine, TaskQueue) | |
| export class App { | |
| constructor(bindingEngine, taskQueue) { | |
| this.bindingEngine = bindingEngine; | |
| this.taskQueue = taskQueue; | |
| this.orders = [ | |
| {id: 1, rate: 10, qty: 1, amount: 10}, | |
| {id: 2, rate: 15, qty: 2, amount: 30}, | |
| {id: 3, rate: 20, qty: 3, amount: 60}, | |
| ]; | |
| this.orders.forEach(o => this.bindingEngine.propertyObserver(o, "qty").subscribe((mew, old) => { | |
| this.qtyChanged(o, mew, old); | |
| })); | |
| this.bindingEngine.collectionObserver(this.orders).subscribe((changeRecords: any[]) => { | |
| changeRecords.forEach(cr => { | |
| this.orders.slice(cr.index, cr.index + cr.addedCount).forEach(order => { | |
| this.bindingEngine.propertyObserver(order, "qty").subscribe((mew, old) => { | |
| this.qtyChanged(order, mew, old); | |
| }); | |
| }); | |
| }); | |
| }); | |
| } | |
| addOrder() { | |
| var newOrder = {id: 4, rate: 25, qty: null}; | |
| this.orders.splice(this.orders.length, 0, newOrder); | |
| //this.taskQueue.flushMicroTaskQueue(); | |
| newOrder.qty = 4; | |
| } | |
| qtyChanged(item, mew, old) { | |
| if (mew != old) { | |
| debugger; | |
| item.amount = item.rate * item.qty; | |
| } | |
| } | |
| } |
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| <!doctype html> | |
| <html> | |
| <head> | |
| <title>Aurelia</title> | |
| <meta name="viewport" content="width=device-width, initial-scale=1"> | |
| <style> | |
| label { | |
| display: inline-block; | |
| width: 50px; | |
| } | |
| </style> | |
| </head> | |
| <body aurelia-app> | |
| <h1>Loading...</h1> | |
| <script src="https://jdanyow.github.io/rjs-bundle/node_modules/requirejs/require.js"></script> | |
| <script src="https://jdanyow.github.io/rjs-bundle/config.js"></script> | |
| <script src="https://jdanyow.github.io/rjs-bundle/bundles/aurelia.js"></script> | |
| <script src="https://jdanyow.github.io/rjs-bundle/bundles/babel.js"></script> | |
| <script> | |
| require(['aurelia-bootstrapper']); | |
| </script> | |
| </body> | |
| </html> |
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