Pass a selected object to a dropdown/select change event using AngularJS

Plunkr : http://plnkr.co/edit/BRQ3I4hFTlgKq4Shz19v?p=preview

I'm attempting to pass the selected item from a dropdown to a function within my controller.

Unfortunately, I keep receiving it as undefined.

HTML :

<!DOCTYPE html>
<html>

  <head>
    <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.9/angular.min.js"></script>
    <link rel="stylesheet" href="style.css">
    <script src="script.js"></script>
  </head>

  <body>
    <h1>Hello Plunker!</h1>

    <div ng-app="MyApp" ng-controller="MyController">
        <select ng-model="ddlFruits" 
        ng-options="fruit.Id as fruit.Name for fruit in Fruits track by fruit.Id"
            ng-change="GetValue(fruit)">
        </select>
    </div>

  </body>

</html>

Script :

var app = angular.module('MyApp', [])
app.controller('MyController', function ($scope, $window) {
    $scope.Fruits = [{
        Id: 1,
        Name: 'Apple'
    }, {
        Id: 2,
        Name: 'Mango'
    }, {
        Id: 3,
        Name: 'Orange'
    }];

    $scope.GetValue = function (fruit) {
        alert(fruit);
    }
});

Answer №1

Hello in HTML modify this

ng-click="UpdateValue(ddlVegetables)"

using the browser's developer tools, you can find the identifier of the chosen item

<select ng-model="ddlVegetables" 
        ng-options="veggie.Id as veggie.Name for veggie in Vegetables track by veggie.Id"
            ng-click="UpdateValue(ddlVegetables)">
        </select>

Answer №2

Here is a code snippet to help you retrieve fruits

HTML

<select ng-model="ddlFruits" 
    ng-options="fruit.Id as fruit.Name for fruit in Fruits track by fruit.Id"
        ng-change="GetValue(this)">
    </select>

  $scope.GetValue = function (val) {
    alert(val.Fruits[val.ddlFruits].Name);
  }

This piece of code will display the selected value

$scope.GetValue = function () {
    alert($scope.ddlFruits);
  }

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