Creating common controller functions

Question

Creating common controller functions

How do I create some sort of utils bundle that would be accessible from all my controllers? I have this route code in my main module:

'use strict';

/* App Module */

angular.module('lpConnect', []).
    config(['$routeProvider', function($routeProvider) {
    $routeProvider.
        when('/home', {template: 'views/home.html',   controller: HomeCtrl}).
        when('/admin', {template: 'views/admin.html',   controller: AdminCtrl}).
        when('/connect', {template: 'views/fb_connect.html',   controller: MainAppCtrl}).
        otherwise({redirectTo: '/connect'});
}]);

and I want a function that will be common to HomeCtrl,AdminCtrl,MainAppCtrl

How should I do it in AngularJS?

javascript
model-view-controller
web
angularjs

Answer 1

The way to define common code in angular is through Services.

You would define a new service like so :

.factory('CommonCode', function ($window) {
        var root = {};
        root.show = function(msg){
            $window.alert(msg);
        };
        return root;
    });

In your controller you would inject this service..like so

function MainAppCtrl($scope,CommonCode)
{
     $scope.alerter = CommonCode;
     $scope.alerter.show("Hello World");
}

Just include CommonCode as an argument to your controller function.. Angular will take care of injecting it for you ( Read on Dependancy Injection ..to understand what is happening here. )