AngularJS：表内动态下拉列表中的ng-model不起作用

Question

I am trying to create dynamic rows based on button click. The rows have drop down boxes. The issue is when I add new row and select an option in the new row the options which I selected in previous rows are also changing, I mean the previous rows options are not binding properly.

My HTML code :

<div id="features" ng-controller="featuresCtrl">
    <br>
    <div class="row">
        <div class="form-group col-md-6">
            <table  cellpadding="15" cellspacing="10">
                <thead>
                <tr>
                    <th style="text-align: center;">Feature</th>
                    <th style="text-align: center;">Type</th>
                    <th style="text-align: center;">Value</th>
                    <th></th>
                    <th></th>
                </tr>
                </thead>
                <tbody>

                <tr></tr>
                <tr ng-repeat="r in rows">
                <td>
                    <select ng-model="r.data.model" ng-options="option.name for option in data.availableOptions"
                            ng-change="getValues(r.data.model.name)">
                        <option value="">Select Feature</option>
                    </select>

                    </td>
                    <td>
                        <select ng-model="r.updateData.model" ng-options="option.name for option in updateData.availableOptions"
                                ng-change="getBinSet(r.updateData.model.name)">
                            <option value="">Select Type</option>
                        </select>
                    </td>
                    <td>
                        <select ng-model="r.binData.model" ng-options="option.name for option in binData.availableOptions">
                            <option value="">Select Value</option>
                        </select>
                    </td>
                    <td  ng-if="showAdd">
                        <div class="text-center">
                            <button ng-click="addRow()">Add</button>
                        </div>
                    </td>
                    <td  ng-if="showAdd">
                        <div class="text-center">
                            <button ng-click="remove($index)">Remove</button>
                        </div>
                    </td>
                </tr>
                <tr>
                    <td></td>
                    <td style="align-self: center;">
                        <button style="align-self: center" ng-click="submitForm(rows)">Submit</button>
                    </td>
                    <td></td>
                </tr>

                </tbody>
            </table>
            <br>
        </div>

My angular JS code :

'use strict';

var testControllers = angular.module('testControllers');

testControllers.controller('featuresCtrl', ['$scope','$route','$filter', '$http', '$location','$window','$timeout', 'NgTableParams',
    function($scope, $route, $filter, $http, $location, $window, $timeout, NgTableParams) {

        $scope.rows = [{}];
        $scope.nrows = [];
        $scope.showAdd = false;


        $scope.addRow = function() {
            $scope.rows.push({

            });

        };

        $scope.remove = function(index) {
                $scope.rows.splice(index, 1);
        };

        $scope.submitForm = function(rows) {
            console.log("rows", rows);
        };

        $scope.data = {
            model: null,
            availableOptions: [
                { name: 'TestA'},
                { name: 'TestB'},
                { name: 'TestC'},
                { name: 'TestD'}

            ]
        };

        $scope.getValues = function (featureType) {
            console.log("getValues", featureType);

            $scope.showAdd = false;


            if (featureType != null) {

                $http.get('/getPropensityValues.do', {params: {'featureType': featureType}}).success(function (data) {
                    var test = [];
                    angular.forEach(data, function (item) {
                        test.push({name: item});
                    });
                    $scope.updateData = {
                        model: null,
                        availableOptions : test
                    };
                });
            }
        };

        $scope.getBinSet = function (featureType) {
            console.log("getBinSet", featureType);

            $scope.showAdd = true;

            if (featureType != null) {
                $scope.binData = {
                    model: null,
                    availableOptions: [
                        {name: '1'},
                        {name: '2'},
                        {name: '3'},
                        {name: '4'},
                        {name: '5'},
                        {name: '6_10'},
                        {name: '10_15'},
                        {name: '16_20'},
                        {name: '21_25'},
                        {name: '26_30'},
                        {name: '31_35'},
                        {name: '36_40'},
                        {name: '41_45'},
                        {name: '46_50'},
                        {name: '>50'}
                    ]
                };

            }
        };

    }]);

Can some one tell me what I am doing wrong here ?

Answer 1

It should be like to this.

 var app = angular.module("app",[]); app.controller('MainCtrl', function($scope) { $scope.updatedData ={ selections:[{ row : [{ name:""}] } ] }; $scope.addRow = function(index){ $scope.index = 0; var row = []; var name = {name:""}; row.push(name); if($scope.updatedData.selections.length <= index+1){ $scope.updatedData.selections.splice(index+1,0,{ row : [{ name:""}] }); } }; $scope.getValues = function(val){ if(val=== 'TestB') { $scope.data1 = { model: null, availableOptions: [ { name: 'TestA'}, { name: 'TestC'}, { name: 'TestD'} ] }; } else if(val=== 'TestA') { $scope.data1 = { model: null, availableOptions: [ { name: 'TestB'}, { name: 'TestC'}, { name: 'TestD'} ] }; } else if(val=== 'TestC') { $scope.data1 = { model: null, availableOptions: [ { name: 'TestA'}, { name: 'TestB'}, { name: 'TestD'} ] }; } else { $scope.data1 = { model: null, availableOptions: [ { name: 'TestA'}, { name: 'TestB'}, { name: 'TestC'} ] }; } }; $scope.deleteRow = function($event,index){ if($event.which == 1) $scope.updatedData.selections.splice(index,1); if($event.which == 1) $scope.updatedData1.selections.splice(index,1); } $scope.data = { model: null, availableOptions: [ { name: 'TestA'}, { name: 'TestB'}, { name: 'TestC'}, { name: 'TestD'} ], availableOptions2: [ { name: 'Test2A'}, { name: 'Test2B'}, { name: 'Test2C'}, { name: 'Test2D'} ] }; }); 

 <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script> <div ng-app="app" ng-controller="MainCtrl"> <table> <tr ng-repeat="d in updatedData.selections track by $index"> <td> <select ng-model="updatedData.selections[$index].row[0].name" ng-options="option.name as option.name for option in data.availableOptions" ng-change="getValues(updatedData.selections[$index].row[0].name)"> <option value="">Select Value</option> </select> </td> <td> <select ng-model="updatedData.selections[$index].row[0].name2" ng-options="option.name as option.name for option in data1.availableOptions" > <option value="">Select Value</option> </select> </td> <td> <select ng-model="updatedData.selections[$index].row[0].name3" ng-options="option.name as option.name for option in data.availableOptions2" > <option value="">Select Value</option> </select> </td> <td> <input type="button" ng-click="addRow($index)" value="Add" ng-show="$last"> </td> </tr> </table> <pre>{{updatedData|json}}</pre> </div>