duplicates - 错误 : [ngRepeat:dupes] what does this mean?

Question

重复指令从 api 输出葡萄酒记录。我有一个工厂函数来提供 wine API，然后在我的 Controller 中访问

app.factory("Wine", function ($http){
     var factory = {};

     //getWines 
     factory.getWines = function(){ 
      return $http.get("http://www.greatwines.9000.com")
     }

}

Controller :

    app.controller("winesCtrl", function($scope, $http, Wine){
        Wine.getWines()
         .success(function(wines){
           $scope.wines = wines;
        })
        .error(function(){
             alert("Error!");
         });
    });

VIEW:

<h2>Wine list</h2>
    <div class="row margin-top-20 wine-container" ng-repeat="wine in wines">
        <div class="col-sm-3">
            <img src="{{wine.picture}}" class="img-responsive" />
        </div>
        <div class="col-sm-9">
            <div class="margin-top-20">
                <span class="bold">Name: </span><span>{{wine.name}}</span>
            </div>
            <div>
                <span class="bold">Year: </span><span>{{wine.year}}</span>
            </div>
            <div>
                <span class="bold">Grapes: </span><span>{{wine.grapes}}</span>
            </div>
            <div>
                <span class="bold">Country: </span><span>{{wine.country}}</span>
            </div>
            <div>
                <span class="bold">Region: </span><span>{{wine.region}}</span>
            </div>
            <div>
                <span class="bold">Price: </span><span>{{wine.price}}</span>
            </div>
            <div>
                <span class="bold">{{wine.description}}</span>
            </div>
            <div class="margin-top-20">
                <a href="#/wines/{{wine.id}}" class="btn btn-default">Edit Wine</a>
            </div>
        </div>
    </div>

我点击了这个错误，并以典型的“模糊”angularjs 方式得到了这个:

Duplicates in a repeater are not allowed. Use 'track by' expression to specify unique keys. Repeater: wine in wines, Duplicate key: string:e, Duplicate value: e

这是什么意思？葡萄酒与“葡萄酒”不同，为什么它认为它是重复的？

Answer 1

在 ngRepeat 表达式中存在重复键时发生。禁止重复键，因为 AngularJS 使用键将 DOM 节点与项目相关联。

这意味着 $scope.wines 有一些重复的值。

你也可以引用这个帖子:Angular ng-repeat Error "Duplicates in a repeater are not allowed."