Question

我们正在尝试将此Stackoverflow示例合并到我们的AngularJS脚本中，并且似乎无法弄清楚它为何无法正常运行。

我们希望在呈现JSON数据之前显示加载图标，一旦JSON准备好，我们就希望图标隐藏。

这些是我们在示例中使用的主要代码段：＆＃39; $ scope.dataLoaded = false;＆＃39; ＆＃39;纳克隐藏=＆＃34; dataLoaded＆＃34;＆＃39; ＆＃39; $ scope.dataLoaded = true;＆＃39; ＆＃39;纳克放映=＆＃34; dataLoaded＆＃34;＆＃39;

如果有人能够看到我们错过的或我们做错了什么，请告诉我们。谢谢。

Plunker

HTML

<div class="page-header col-md-12">
  <h4><i class="fa fa-tasks"></i> Warranty Job</h4>
</div>
<div class="col-md-12"> 
  <p class="text-center" ng-hide="dataLoaded">
    <i class="fa fa-circle-o-notch fa-spin"></i>
  </p>

  <div class="panel panel-info" ng-controller="warrantySingleController" ng-show="dataLoaded">
    <div class="panel-heading">
      <h3 class="panel-title"><i class="fa fa-tasks"></i> {{warrantySingleData[0].Title}}</h3>
    </div>
    <div class="panel-body">
      <div class="bs-component">
       <table class="table table-striped table-hover" >
          <tbody>
            <tr><td>JobID: {{warrantySingleData[0].JobID}}</td></tr>
            <tr><td>Model: {{warrantySingleData[0].Model}}</td></tr>
            <tr><td>Title: {{warrantySingleData[0].Title}}</td></tr>
            <tr><td>Date: {{warrantySingleData[0].ReminderDate}}</td></tr>
          </tbody>
        </table> 
      </div>
    </div>
  </div>
</div>

CONTROLLER

.controller('warrantySingleController', function($scope, $http, $stateParams) {
  $scope.params = $stateParams.jobID[0];
  $scope.dataLoaded = false;
  $http({
    url: 'http://jsonstub.com/warranty/'+$scope.params,
    method: 'GET',
    dataType: 'json', 
    data: '',         
    headers: {
        'Content-Type': 'application/json',
        'Access-Control-Allow-Origin': 'http://run.plnkr.co',
        'JsonStub-User-Key': '1357f082-ea56-46f0-adc5-3e5c273f6f87',
        'JsonStub-Project-Key': 'e4f971a2-db30-45a0-80f9-bfa41b922c64'
    }
  }).success(function (data, status, headers, config) {
    $scope.warrantySingleData = data;
    $scope.dataLoaded = true;
  }).error(function(data,status,error,config){
    $scope.warrantySingleData =  [{heading:"Error",description:"Could not load json data"}];
    $scope.dataLoaded = false;
  });
})

ANWSER

<div ng-controller="warrantySingleController">
  <div class="page-header col-md-12">
    <h4><i class="fa fa-tasks"></i> Warranty Job</h4>
  </div>
  <div class="col-md-12"> 
    <p class="text-center" ng-hide="dataLoaded">
      <i class="fa fa-circle-o-notch fa-spin"></i>
    </p>

    <div class="panel panel-info"  ng-show="dataLoaded">
      <div class="panel-heading">
        <h3 class="panel-title"><i class="fa fa-tasks"></i> {{warrantySingleData[0].Title}}</h3>
      </div>
      <div class="panel-body">
        <div class="bs-component">
         <table class="table table-striped table-hover" >
            <tbody>
              <tr><td>JobID: {{warrantySingleData[0].JobID}}</td></tr>
              <tr><td>Model: {{warrantySingleData[0].Model}}</td></tr>
              <tr><td>Title: {{warrantySingleData[0].Title}}</td></tr>
              <tr><td>Date: {{warrantySingleData[0].ReminderDate}}</td></tr>
            </tbody>
          </table> 
        </div>
      </div>
    </div>
  </div>
</div>

Answer 1

<div ng-controller="warrantySingleController">
  <div class="page-header col-md-12">
    <h4><i class="fa fa-tasks"></i> Warranty Job</h4>
  </div>
  <div class="col-md-12"> 
    <p class="text-center" ng-hide="dataLoaded">
      <i class="fa fa-circle-o-notch fa-spin"></i>
    </p>

    <div class="panel panel-info"  ng-show="dataLoaded">
      <div class="panel-heading">
        <h3 class="panel-title"><i class="fa fa-tasks"></i> {{warrantySingleData[0].Title}}</h3>
      </div>
      <div class="panel-body">
        <div class="bs-component">
         <table class="table table-striped table-hover" >
            <tbody>
              <tr><td>JobID: {{warrantySingleData[0].JobID}}</td></tr>
              <tr><td>Model: {{warrantySingleData[0].Model}}</td></tr>
              <tr><td>Title: {{warrantySingleData[0].Title}}</td></tr>
              <tr><td>Date: {{warrantySingleData[0].ReminderDate}}</td></tr>
            </tbody>
          </table> 
        </div>
      </div>
    </div>
  </div>
</div>

Answer 2

正如@Pzyon所说，属性dataLoaded超出范围并由warrantyListController控制器管理。以下是处理此问题的两种方法，除非有令人信服的理由，否则我会选择＃1。

将文件warranty/single.html的内容包含在div中，让整个内容由warrantySingleController控制器管理。
使用$emit和/或$broadcast向warrantySingleController发送已加载数据的warrantyListController消息

Answer 3

这可能是原型继承问题。尝试将范围包装在某个对象中，例如：

$scope.wrapper = {
   dataLoaded: false
}

并通过{{wrapper.dataLoaded}}

引用它

阅读本文：https://github.com/angular/angular.js/wiki/Understanding-Scopes#javascript-prototypal-inheritance

AngularJS ng-show / ng-hide

3 个答案: