Question

我有2个模型Post和Comment。两者都有自己的路由：PostRoute和PostCommentsRoute，在第一种情况下，我只是使用@store.find来加载模型数据，但我对第二条路线有问题。当我尝试引用Post然后得到它的注释时，它们会加载但是在我添加新注释时不会更新。如果我使用@store.find 'comment'，它会保持更新，但会加载所有内容，所以这不是重点。如何只获得与帖子相关的评论并保持更新？

App.Post = DS.Model.extend
  comments: DS.hasMany 'comment', async: true

App.Comment = DS.Model.extend
  post: DS.belongsTo 'post'

  text: DS.attr 'string'

App.Router.map ()->
  @resource 'post', path: '/post/:post_id', ()->
    @route 'comments'

App.PostCommentsController = Em.ArrayController.extend
  newComment: ""

  needs: 'post'
  post: Em.computed.alias 'controllers.post'
  sortProperties: ['created'],
  sortAscending: false

  actions:
    addComment: ()->
      commentText = @get 'newComment'
      post = @get 'post'
      comment = @store.createRecord 'comment',
        text: commentText
        post: post.get 'content'

      @set 'newComment', ''

      comment.save()

App.PostRoute = Em.Route.extend
  model: (params)->
    @store.find 'post', params.post_id

App.PostCommentsRoute = Em.Route.extend
  model: (params)->
    # loads only comments to parent post but doesn't update
    post = @modelFor 'post'
    post.get 'comments' # /api/posts/1/comments

App.PostCommentsRoute = Em.Route.extend
  model: (params)->
    # updates but loads all comments
    @store.find 'comment' # /api/comments

Answer 1

保存comment后，您必须按post的评论推送它：

comment.save().then(function () {
  post.get('comments').push(comment);

  // or if that doesn't work you may need to resolve the promise:
  post.get('comments').then(function (comments) {
   comments.push(comment);
  });
});

如何在路线中正确获取hasMany模型

1 个答案: