如何使用 Ember ArrayController 获取对象的集合

Question

我无法用我目前正在做的事情获取奖项集合，我在获取此集合时做错了什么？

我不断收到以下错误：

错误：处理路由时出错：奖励断言失败：ArrayController 期望model实现 Ember.Array mixin。这通常可以通过用"Ember.A（） "包装模型来修复

---

路由器.咖啡

---

...
Router.map ->
  # Contests
  @resource 'contests'
  @resource 'contest', { path: '/contests/:contest_id' }
  # Awards
  @resource 'awards', { path: '/contests/:contest_id/awards' }
  @resource 'award', { path: '/contests/:contest_id/awards/:award_id' }
  # Ads
  @resource 'ads', { path: '/contests/:contest_id/ads' }
  @resource 'ad', { path: '/contests/:contest_id/ads/:ad_id' }
...

奖项.咖啡模型

---

`import DS from 'ember-data'`
AwardModel = DS.Model.extend
  # Attributes
  description: DS.attr 'string'
  amount: DS.attr 'string'
  adId: DS.attr 'string'
  adType: DS.attr 'string'
  state: DS.attr 'string'
  thumbnail: "http://placehold.it/290x218"
  # Relationships
  ad: DS.belongsTo 'ad', async: true
  contest: DS.belongsTo 'contest', async: true
`export default AwardModel`

比赛.咖啡模型

---

`import DS from 'ember-data'`
ContestModel = DS.Model.extend
  # Attributes
  title:          DS.attr 'string'
  truncatedTitle: DS.attr 'string'
  state:          DS.attr 'string'
  totalAwards:    DS.attr 'string'
  totalAds:       DS.attr 'string'
  startsOn:       DS.attr 'date'
  endsOn:         DS.attr 'string'
  daysLeft:       DS.attr 'string'
  thumbnail:      DS.attr 'string'
  createdAt:      DS.attr 'date'
  # Relationships
  ads:    DS.hasMany 'ad',    async: true
  awards: DS.hasMany 'award', async: true
`export default ContestModel`

奖项.咖啡控制器

---

`import Ember from 'ember'`
AwardsController = Ember.ArrayController.extend
  videoAwards: '',
  printAwards: '',
  setAwards: (type) ->
    awards = @filter((award) ->
      award.get('adType') == type.capitalize()
    )
    @set(type + 'Awards', awards)
  actions:
    sortAwardsByType: ->
      @setAwards('video')
      @setAwards('print')
      # TODO: find out why this is not working
      # ['video', 'print'].forEach (type) ->
        # @setAwards(type)
`export default AwardsController`

奖项.咖啡路线文件

---

`import Ember from 'ember'`
`import AuthenticatedRouteMixin from 'simple-auth/mixins/authenticated-route-mixin'`
AwardsRoute = Ember.Route.extend AuthenticatedRouteMixin,
  model: ->
    # How to fetch the awards of the given contest here with ember data
  setupController: (controller, model) ->
    controller.set('model', model)
    controller.send('sortAwardsbyType')
`export default AwardsRoute`

Answer 1

这将起作用：

// awards route
model: (params) ->
  @store.find('contest', params.contest_id).then((contest) ->
     contest.get('awards')
  )

更多关于承诺链的信息 这里.

然后，您可以在奖励控制器中对模型实施筛选。