Question

我想从ng-repeat指令中获取数组中的特定索引。

现在它打印出所有索引的信息......我只是一个打印第二个索引的信息，例如......

这是我的main.js：

  app.controller('ProviderController', ['$http', '$scope', function($http, $scope) {
      var provider = this;

    //Get service from API
      $http({
        url: 'http://private-5d90c-kevinhiller.apiary-mock.com/angular_challenge/horror_movies',
        method: "GET",
      }).success(function(data) {
        //process received Data with the processMovie function
         var providers = processMovies(data);
        //process Data with the calculatePercentage function
         var percentages = calculatePercentage(providers, data.length);


         var providerKeys = [];
         for(key in providers) {
          providerKeys.push(key);
         }
         $scope.providerKeys = providerKeys;
         $scope.providers = providers;
         $scope.percentages = percentages;
      })
  }]);


  function processMovies(data) {

    var providers = [],
      movie,
      offer;
    var total = data.length;

    for(var i = 0; i < data.length; i++) {
      movie = data[i];
      var movie_id = movie.id;
      for(var j = 0; j < movie.offers.length; j++) {
        offer = movie.offers[j];
        //check if provider_id doesnt exist
        if (typeof providers[offer.provider_id] === 'undefined') {
            providers[offer.provider_id] = {};
            providers[offer.provider_id][movie_id] = movie;
        } else {
            if(!providers[offer.provider_id].hasOwnProperty(movie_id)) {
              providers[offer.provider_id][movie_id] = movie;

            }   
        }

      }  

    }
    return providers;
  }

我的Html：

               <div ng-controller="ProviderController as provider">
                <!-- Include provider controller from Angular-->      
                <div  ng-repeat="providerId in providerKeys">
                    <ul>
                        <li>Provider {{providerId}}: {{percentages[providerId]|number :0 }}%

                        </li>
                    </ul>
                </div>
                <div ng-repeat="(provider_id, value) in providers track by $index">
                    <div ng-repeat="movie in value">
                        <p>{{movie.title}} Belongs to provider number: {{provider_id}}</p><br>
                    </div>
                </div>
            </div>

结果我得到了所有电影的所有电影..我怎么说Angular指令只是从提供者2那里得到的？谢谢！

Answer 1

您可以设置ng-show或ng-if来检查$index。

<div ng-repeat="(provider_id, value) in providers track by $index" ng-if="$index==2">
  <div ng-repeat="movie in value">
    <p>{{movie.title}} Belongs to provider number: {{provider_id}}</p><br>
  </div>
</div>

如何从Angular ng-repeat指令中检索数组中的某些索引？

1 个答案: