带有动态列表的离子选项卡

时间:2014-12-18 17:04:03

标签: javascript angularjs http ionic

我创建了一个带有选项卡的离子项目,这些选项卡使用services.js中的代码显示动态列表:

.factory('Interventions', function($http) {
   var interventions = {};
   $http({
     method: 'POST',
     url: 'http://172.20.1.1/list.php'
   }).success(function(data, status, headers, config) {
     interventions = data;
   });
   return {
     all: function() {
       return interventions;
     },
     get: function(iid) {
       return interventions[iid];
   }}
})

问题是我的应用程序在我加载页面时没有首先显示列表,但只有当我刷新它(使用doRefresh)或者当我转到其他选项卡并返回到第一个时。 有解决方案可以解决这个问题吗?

提前谢谢

我的代码i ncontroller.js:

.controller('InterventionCtrl', function($scope, $http, Interventions) {
$scope.interventions = Interventions.all();

$scope.doRefresh = function() {
    $http.get('http://172.20.1.1/list.php')
    .success(function(newItems) {
        $scope.interventions = newItems;
    })
    .finally(function() {
        // Stop the ion-refresher from spinning
        $scope.$broadcast('scroll.refreshComplete');
    });
};
})
 .controller('InterventionDetailCtrl', function($scope, $stateParams, Interventions) {
   $scope.intervention = Interventions.get($stateParams.iid);
 });

和我的观点:

<ion-view title="Interventions">
      <ion-content>
        <ion-list>
          <ion-item ng-repeat="intervention in interventions" type="item-text-wrap" href="#/tab/interventions/{{intervention.ID}}">
            <h3>{{intervention.Nom}}</h3>
          </ion-item>
        </ion-list>
      </ion-content>
    </ion-view>

1 个答案:

答案 0 :(得分:0)

Interventions.all()发出一个异步的http请求。调用all()时,您无法保证数据可用。 所以all()都不能返回数据。你必须传递一个类似的回调(未经测试):

   var interventions = {};
   var doRequest = function(callback) {
     $http({
       method: 'POST',
       url: 'http://172.20.1.1/list.php'
     }).success(function(data, status, headers, config) {
       interventions = data;
       callback(data);
     });
   })
   return {
      all: function(callback) {
        if (interventions) {
          callback(interventions)
        } else {
          doRequest(callback)
        }
      },
      get: function(iid,callback) {
        if (interventions) {
          callback(interventions[iid])
        } else {
          doRequest(function(data){
             callback(data[iid])
          })
        }
      }
   }

在你的控制器中:

Interventions.all(function(interventions) {
  $scope.interventions = interventions;
}

Interventions.get(iid,function(intervention) {
  $scope.intervention = intervention;
}

您可以在此处找到有关异步的更多信息:How do I return the response from an asynchronous call?