Question

所以我尝试使用ajax向我的服务器发送自定义操作，并在回调中更新emberJS模型。我的控制器代码如下所示：

PlatformUI.CampaignItemController = Ember.ObjectController.extend({
  actions: {
    deleteCampaign: function(){
      var campaign = this.get('model');
      campaign.deleteRecord();
      campaign.save();
    },
    startCampaign: function(){
      var campaign = this.get('model');
      $.ajax({
        url: '/campaigns/' + campaign.get('id') + '/campaign_start.json',
        type: 'GET',
        success: function(data, textStatus, xhr) {
          campaign.set('status', data.started);
          //campaign.save();
        },
        error: function(xhr, textStatus, errorThrown) {
          console.log(xhr);
          alert('start campaign failed');
        }
      });
    }
  }
});

我的模型看起来像这样：

PlatformUI.Campaign = DS.Model.extend({

  name: DS.attr('string'),
  status: DS.attr('string'),
  updated_at: DS.attr('date'),
  user_id: DS.attr('number'),
  created_at: DS.attr('date'),
  started: function(){
    return this.get('status') == 'true';
  }.property()
});

编辑：添加模板：

<div class="page-header">
  <h1> Campaigns
    List
    <a role="button" class="btn btn-primary" href="/campaigns/new">Create New</a>
  </h1>
</div>
<div class="table-responsive">
  <table class="table table-striped table-bordered table-hover">
    <thead>
    <tr>
      <th>ID</th>
      <th>Name</th>
      <th>Status</th>
      <th>Last updated</th>
      <th>Actions</th>
    </tr>
    </thead>
    <tbody>
     {{#each campaign in model itemController="CampaignItem"}}
        <tr>
          <td>{{campaign.id}}</td>
          <td>{{campaign.name}}</td>
          <td>{{ternary campaign.status "Started" "Stopped"}}</td>
          <td>{{campaign.updated_at}}</td>
          <td>
            <a class="btn btn-primary" {{bind-attr href=campaign.edit_url}}>Edit</a>
            <a class="btn btn-danger" {{action "deleteCampaign"}}>Delete</a>
            {{#if campaign.started}}
              <a class="btn btn-primary" {{bind-attr href=campaign.stop_url}}>Stop</a>
            {{else}}
              <a class="btn btn-primary" {{action "startCampaign"}}>Start</a>
            {{/if}}
          </td>
        </tr>
     {{/each}}
    </tbody>
  </table>
</div>

问题是我执行该操作时没有刷新视图。我是emberJS的新手，所以我不知道模型是否真的更新过。

Answer 1

您需要让started知道它是由status计算出来的，因此它知道在status发生更改时会重新计算。

您可以通过在依赖项列表中包含status来完成此操作。

started: function(){
    return this.get('status') == 'true';
  }.property('status')

在ajax请求之后更新emberJS视图

1 个答案: