Utilizing AngularJS with dual controllers within a single view

Question

Utilizing AngularJS with dual controllers within a single view

I recently started working on an angularJS web app using a purchased template that has all its controllers, routes, and directives in a single file called app.js.

This is my first dive into angularJS and front-end development. Hoping to become a Full Stack geek now.. :D

However, I've hit a roadblock. The app functions perfectly fine until I try to add a new controller AuthCtrl from another file named auth.js. It throws an error saying AppCtrl not found. Below HTML snippet highlights the exact issue:

<!doctype html>
<!--[if gt IE 8]><!--> <html class="no-js"> <!--<![endif]-->

<!-- rest of the provided HTML content stays same -->

<span class="highlight">/*Code ommitted for brevity*/</span>

    <script src="scripts/controllers/auth.js"></script>

<span class="beginning">(function() {</span>
<span class="content-indent">"use strict";</span>
angular.module("app.chart.ctrls",[])
    .controller("chartCtrl",[
        "$scope",
        function($scope){ ....

javascript angularjs

Answer 1

Answer №1

The issue here lies in the implementation within the auth.js file:

var app = angular.module('app',.......

This code snippet is creating a new instance of the 'app' module or potentially overwriting an existing one declared in the app.js file.

Instead of this, you should aim to utilize the same 'app' variable that has been defined in the app.js file.

To achieve this, it is recommended to declare the app and store a reference to it in a separate variable:

var yourApp = angular.module("app.controllers",[.........]);

You can then link controllers by assigning them to the variable containing the app definition. As an example, let's explore how the 'chartCtrl' controller should be associated with the 'yourApp' application:

yourApp.controller("chartCtrl",[
        "$scope",
        function($scope){ ....

In your auth.js file, update the controller implementation as follows:

yourApp.controller('AuthCtrl', function ($scope) {
  $scope.phones = [
    {'name': 'Nexus S',
     'snippet': 'Fast just got faster with Nexus S.'},
    {'name': 'Motorola XOOM™ with Wi-Fi',
     'snippet': 'The Next, Next Generation tablet.'},
    {'name': 'MOTOROLA XOOM™',
     'snippet': 'The Next, Next Generation tablet.'}
  ];
});

Answer 2

The issue here lies in the implementation within the auth.js file:

var app = angular.module('app',.......

This code snippet is creating a new instance of the 'app' module or potentially overwriting an existing one declared in the app.js file.

Instead of this, you should aim to utilize the same 'app' variable that has been defined in the app.js file.

To achieve this, it is recommended to declare the app and store a reference to it in a separate variable:

var yourApp = angular.module("app.controllers",[.........]);

You can then link controllers by assigning them to the variable containing the app definition. As an example, let's explore how the 'chartCtrl' controller should be associated with the 'yourApp' application:

yourApp.controller("chartCtrl",[
        "$scope",
        function($scope){ ....

In your auth.js file, update the controller implementation as follows:

yourApp.controller('AuthCtrl', function ($scope) {
  $scope.phones = [
    {'name': 'Nexus S',
     'snippet': 'Fast just got faster with Nexus S.'},
    {'name': 'Motorola XOOM™ with Wi-Fi',
     'snippet': 'The Next, Next Generation tablet.'},
    {'name': 'MOTOROLA XOOM™',
     'snippet': 'The Next, Next Generation tablet.'}
  ];
});

Utilizing AngularJS with dual controllers within a single view

Answer №1

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