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javascriptangularjsangularjs-ng-repeatng-optionsangularjs-ng-options

Remove/hide the item from the ng-option if the item is selected by another select box inside ng-repeat

How to remove/hide the item from ng-option inside ng-repeat if item is selected by another ng-option?

    <table class="table table-bordered table-condensed">
      <tr>
        <th>Column Name</th>
        <th>Map to field</th>
      </tr>
      <tr ng-repeat="head in headers">
        <td>{{ head }}</td>
        <td>
          <select ng-model="selectedColumn[head]" 
            ng-change="selectColumn(selectedColumn[head])" 
            ng-options="row for row in data">
            <option value="">select</option>
          </select>
        </td>
      </tr>
    </table>

    $scope.headers = ["foo", "bar", "baz"]; 
    $scope.data =["alpha", "beta", "gamma"]; 
    $scope.selectedColumn = {};

    $scope.selectColumn = function(selectedhead) { 
      // $scope.fileData.headers.splice(selectedhead); 
      $scope.data = $scope.data.filter(function(item){ 
        return !selectedhead || !angular.equals(item, selectedhead); 
      }); 
    }

from above code the item get removed from data, however the shows select.kindly advise, thanks in advance

Solution

  • sindex.html

        <!DOCTYPE html>
    <html>
    <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css">
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"></script>

    <link rel="stylesheet" href="style.css"></style>
    <body>
        <div ng-app="App"  ng-controller="selectController">
            <div class="container">
                <div class="row">
                    <div class="col-12">
                        <table class="table table-bordered table-condensed">
                            <tr>
                            <th>Column Name</th>
                            <th>Map to field</th>
                            </tr>
                            <tr ng-repeat="head in headers">
                            <td>{{ head }}</td>
                            <td>
                                <select ng-model="selectedColumn[head]" 
                                    class="form-control"
                               ng-options="opt for opt in filterRow(head)">
                                <option value="">select</option>
                                </select>
                            </td>
                            </tr>
                        </table>
                    </div>
                </div>
            </div>

        </div>  
    <script>
    var app = angular.module('App', []);

    app.controller('selectController', function($scope) {
        $scope.headers = ["foo", "bar", "baz"]; 
        $scope.data =["alpha", "beta", "gamma"]; 
        $scope.selectedColumn = {};

        // use this insted
        $scope.filterRow = function(head) { 
            return $scope.data.filter(function(d) {
                return !(Object.values($scope.selectedColumn)).includes(d) || $scope.selectedColumn[head] === d;
            })
        }
    });
    </script>

    </body>
    </html>