ng不允許重複重複

我想從一個返回的JSON對象中填充一個具有一個值的下拉列表。ng不允許重複重複

我得到一個錯誤：

Duplicates in a repeater are not allowed. Use 'track by' expression to specify unique keys. Repeater: issue in $ctrl.series track by issue.IssueID, Duplicate key: undefined, Duplicate value: {"id":2,"name":"#2"}

我的GET請求返回的JSON對象，其中由我只想填充來自該對象的seriesNumber下拉：

$ctrl.series = []; 

      $ctrl.populateSeriesNumber = function() { 

       $http.get("../api/issues/issueSeries") 
        .then(function(response) { 
         $ctrl.series = response.SeriesNumber; 

         } 
        ); 
      } 



    <select class="form-control" name="series" id="series" ng-model="$ctrl.selectedSeries" required ng-click="$ctrl.populateSeriesNumber()"> 
          <option ng-repeat="issue in $ctrl.series track by issue.IssueID" value="{{issue.SeriesNumber}}">{{issue.SeriesNumber}}</option> 
         </select>

來源

2017-02-16 SEED

可能與http://stackoverflow.com/questions/16296670/angular-ng-repeat-error-duplicates-in-a-repeater-are-notallowable重複 – digit

變化

<option ng-repeat="issue in $ctrl.series track by issue.IssueID" value="{{issue.SeriesNumber}}">{{issue.SeriesNumber}}</option>

到

<option ng-repeat="issue in $ctrl.series track by $index" value="{{issue.SeriesNumber}}">{{issue.SeriesNumber}}</option>

來源

2017-02-16 16:18:39

ng不允許重複重複

回答

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