emberjs getEach方法无法按预期工作 [英] emberjs getEach method does not work as expected

问题描述

我有以下代码，希望返回[1000]，但返回[undefined]：

I have the following code which I expect to return [1000] but returns [undefined]:

this.get('details').getEach('gross_total')

但是

this.get('details')[0].get('gross_total')

起作用并返回1000。

does work and returns 1000.

我现在正在使用rc3。

I am using rc3 right now. The same code in rc1 worked fine.

我的持久层取自于话语。相关模型如下。发票有很多详细信息

My persistence layer is taken from discourse. The relevant models are below. Invoice has_many details

App.Invoice = App.Model.extend App.Commentable,
  invoice_number: App.Attr('string')
  description: App.Attr('string')
  issue_date: App.Attr('date')
  due_date: App.Attr('date')
  contact: App.BelongsTo('App.Contact', "contacts")
  details: App.HasMany('App.InvoiceDetail', "detail_ids")
  payments: App.HasMany('App.Payment', "payment_ids")
  invoice_status: App.Attr('string')
  comments: App.HasMany('App.Comment', "comment_ids")

App.InvoiceDetail = App.Model.extend App.DestroyableChild,
  detail_no: App.Attr('int') 
  description: App.Attr('string') 
  quantity: App.Attr('float') 
  unit_price: App.Attr('currency') 
  consumption_tax_rate: App.Attr('float')
  vat_rate: App.Attr('float')
  discount_type: App.Attr('string')
  discount_value: App.Attr('currency')
  product: App.BelongsTo('App.Product', 'products')

推荐答案

在原型require.js用于加载我的应用程序时，我已经看到了这个问题。使用ember.js 1.0.0-rc.1。

I have seen this issue when prototyping require.js use for loading my app. Using ember.js 1.0.0-rc.1.

我将其追溯到拥有两个ember.js脚本实例（每个脚本实例包含其自己的不同Ember.META_KEY） ），这暗示了不合逻辑的行为。

I traced it down to having two ember.js script instances (each of which contains its own different Ember.META_KEY) which implied the illogical behavior.

所以答案似乎是确保在浏览器中仅加载单个ember.js副本窗口上下文。

So the answer seems to be to make sure only a single ember.js copy is loaded within the browser window context.

这篇关于emberjs getEach方法无法按预期工作的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！