반복 반복 허용 안 함

Question

반환 된 JSON 개체의 값 하나를 드롭 다운 목록에 채우려고합니다.

$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> 

Answer 1

변화

:

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"}

내 GET 요청은 내가 해당 개체에서 seriesNumber와 드롭 다운을 채우려로 JSON 객체를 반환

나는 오류를 얻고있다

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

to

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