AngularJS: incorporating modules across distinct controllers

Question

AngularJS: incorporating modules across distinct controllers

Imagine we have two distinct AngularJS controllers housed in separate files that are both referenced in an HTML document. Here's how it looks:

//controller1.js
"use strict";
var someApp = angular.module('MYAPP');
//var someApp = angular.module('MYAPP',['ngCookies']); <-- Does not work

someApp.controller('Controller1', function($scope) {

    $scope.CookieFunction = function(){
        //foo
    };
});   


//controller2.js
"use strict";
var someApp = angular.module('MYAPP',['ngCookies','ui.bootstrap']);

someApp.controller('Controller2', function($scope,$cookies) {

    $scope.SomeOtherfunction = function(){
        //foo
    };
}); 

//HTML file
<script src="controller1.js"></script>
<script src="controller2.js"></script>

Within controller1, there is a need to execute Cookie operations which necessitates the inclusion of ngCookies. However, if this inclusion occurs inside controller1.js, it results in controller2 becoming undefined. The preference lies in adding modules precisely where they are required and not elsewhere. How can this be accomplished without impacting subsequent controllers?

EDIT: Upon moving the inclusion of ngCookies from controller2 to controller1, the following error is encountered (Argument 'controller2' is not a function, got undefined)

javascript angularjs

Answer 1

Answer №1

If you want to modularize your application, one way to do it is by creating different modules like the example below. This approach is recommended for maintaining a structured and organized application.

 //app.js
"use strict";
var mainApp = angular.module('MYAPP', ['SomeApp', 'OtherApp']);


 //controller1.js
var someApp = angular.module('SomeApp',['ngCookies']);
someApp.controller('Controller1', function($scope,$cookies) {

    $scope.CookieFunction = function(){
        //foo
    };
});   


//controller2.js
"use strict";
var otherApp = angular.module('OtherApp ',[]);

otherApp.controller('Controller2', function($scope) {

    $scope.SomeOtherfunction = function(){
        //foo
    };
}); 

//HTML file
<script src="app.js"></script>
<script src="controller1.js"></script>
<script src="controller2.js"></script>

Answer 2

If you want to modularize your application, one way to do it is by creating different modules like the example below. This approach is recommended for maintaining a structured and organized application.

 //app.js
"use strict";
var mainApp = angular.module('MYAPP', ['SomeApp', 'OtherApp']);


 //controller1.js
var someApp = angular.module('SomeApp',['ngCookies']);
someApp.controller('Controller1', function($scope,$cookies) {

    $scope.CookieFunction = function(){
        //foo
    };
});   


//controller2.js
"use strict";
var otherApp = angular.module('OtherApp ',[]);

otherApp.controller('Controller2', function($scope) {

    $scope.SomeOtherfunction = function(){
        //foo
    };
}); 

//HTML file
<script src="app.js"></script>
<script src="controller1.js"></script>
<script src="controller2.js"></script>

Answer 3

Answer №2

By providing a second argument to angular.module, like

angular.module('MYAPP',['ngCookies'])

, you are creating a brand new module along with its necessary dependencies. If you omit the second argument (dependencies), then the function functions as a 'getter', returning a reference to the existing module that can be used to register additional controllers/services/etc. Repeating

angular.module('MYAPP', ['ngCookies'])

will overwrite the original 'MYAPP' module, causing Controller1's functionality to appear lost.

Since ngCookies is already included via `angular.module('MYAPP',['ngCookies']) in the same file as Controller2, there is no need to repeat it in the file containing Controller1. You should be able to access $cookies just fine in Controller1 - just remember to inject it properly. For example:

someApp.controller('Controller1', function($scope, $cookies) {

    $scope.CookieFunction = function(){
        //foo
    };
});

Answer 4

By providing a second argument to angular.module, like

angular.module('MYAPP',['ngCookies'])

, you are creating a brand new module along with its necessary dependencies. If you omit the second argument (dependencies), then the function functions as a 'getter', returning a reference to the existing module that can be used to register additional controllers/services/etc. Repeating

angular.module('MYAPP', ['ngCookies'])

will overwrite the original 'MYAPP' module, causing Controller1's functionality to appear lost.

Since ngCookies is already included via `angular.module('MYAPP',['ngCookies']) in the same file as Controller2, there is no need to repeat it in the file containing Controller1. You should be able to access $cookies just fine in Controller1 - just remember to inject it properly. For example:

someApp.controller('Controller1', function($scope, $cookies) {

    $scope.CookieFunction = function(){
        //foo
    };
});

Answer 5

Answer №3

Perhaps something along these lines?

//app.js
"use strict";
angular.module('MYAPP', ['myCtrl1', 'myCtrl2']);

//controller1.js
angular.module('myCtrl1', ['ngStorage'])
  .controller('Controller1', function($scope) {

    $scope.StorageFunction = function(){
        //bar
    };
});   

//controller2.js
"use strict";

angular.module('myCtrl2',['ngStorage','ui.router']);
  .controller('Controller2', function($scope,$localStorage) {

    $scope.SomeOtherfunction = function(){
        //bar
    };
});

//HTML file
<script src="app.js"></script>
<script src="controller1.js"></script>
<script src="controller2.js"></script>

Answer 6

Perhaps something along these lines?

//app.js
"use strict";
angular.module('MYAPP', ['myCtrl1', 'myCtrl2']);

//controller1.js
angular.module('myCtrl1', ['ngStorage'])
  .controller('Controller1', function($scope) {

    $scope.StorageFunction = function(){
        //bar
    };
});   

//controller2.js
"use strict";

angular.module('myCtrl2',['ngStorage','ui.router']);
  .controller('Controller2', function($scope,$localStorage) {

    $scope.SomeOtherfunction = function(){
        //bar
    };
});

//HTML file
<script src="app.js"></script>
<script src="controller1.js"></script>
<script src="controller2.js"></script>

Answer 7

Answer №4

The issue within the code snippet is as follows (replace [ngCookies] with ['ngCookies'])

//controller1.js
"use strict";
var myApp = angular.module('YOURAPP',['ngCookies']);

Another method, condensing into 1 app.js file

// app.js
"use strict";
var myApp = angular.module('YOURAPP',['ngCookies']); 

myApp.controller('Controller1', function($scope) {

    $scope.CookieFunction = function(){
        //foo
    };
});   

myApp.controller('Controller2', function($scope,$cookies) {

    $scope.SomeOtherfunction = function(){
        //foo
    };
}); 

//HTML file
<script src="app.js"></script>

Combining into a single main app.js with separate controller files

If you prefer to have controllers in distinct files, then,

app.js

var app = angular.module("testApp",['ngCookies','ui.bootstrap']);

test1.js

app.controller("controller1",function(){
// some code
})

test2.js

app.controller("controller2",function(){
// some code
})

Lastly, include the JS files in the HTML

<script src="app.js"></script>
<script src="controller1.js"></script>
<script src="controller2.js"></script>

Answer 8

The issue within the code snippet is as follows (replace [ngCookies] with ['ngCookies'])

//controller1.js
"use strict";
var myApp = angular.module('YOURAPP',['ngCookies']);

Another method, condensing into 1 app.js file

// app.js
"use strict";
var myApp = angular.module('YOURAPP',['ngCookies']); 

myApp.controller('Controller1', function($scope) {

    $scope.CookieFunction = function(){
        //foo
    };
});   

myApp.controller('Controller2', function($scope,$cookies) {

    $scope.SomeOtherfunction = function(){
        //foo
    };
}); 

//HTML file
<script src="app.js"></script>

Combining into a single main app.js with separate controller files

If you prefer to have controllers in distinct files, then,

app.js

var app = angular.module("testApp",['ngCookies','ui.bootstrap']);

test1.js

app.controller("controller1",function(){
// some code
})

test2.js

app.controller("controller2",function(){
// some code
})

Lastly, include the JS files in the HTML

<script src="app.js"></script>
<script src="controller1.js"></script>
<script src="controller2.js"></script>

AngularJS: incorporating modules across distinct controllers

Answer №1

Answer №2

Answer №3

Answer №4

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