What mistakes am I making in including/injecting functions in AngularJS controllers and factories?

I'm encountering an issue in Angular where I am struggling to inject my factory into my controller. The error message I'm receiving is "Cannot read property 'validar' of undefined". In my project, I have two files - ServiceUtil.js which contains the service and CentroCustoCtrl.js where I'm attempting to utilize the service's function.

The function in ServiceUtil.js:

 (function () {
  'use strict';

  angular.module('Services', [])
  .service('ValidarFormulario', [function () {

      this.validar = function (form) {
          var valido = true;
         //code
          return valido;
      }
  }]);

})();

And in CentroCustoCtrl.js:

(function () {
 'use strict';

var app = angular.module("start", ['AxelSoft', 'ngLocalize',
       'ngLocalize.Config', 'mvComponentes','Services'])
       .value('localeConf', {
               basePath: '../Scripts/Locales', ...
 ...
 });
 app.controller('CentroCustoCtrl', ['$scope', '$http', 'ValidarFormulario', function ($scope, $http, $rootScope, $timeout, ValidarFormulario) {
   $scope.Salvar = function () {
    if (ValidarFormulario.validar(document.getElementsByTagName('input'))) { ...// Cannot read property 'validar' of undefined

  );

I also attempted to use a factory without success:

angular.module('Services', [])
.factory('ValidarFormulario', [function () {

    return{
        validar : function (form) {
            var valido = true;
           //code
            return valido;
          }
      }
   }]);

})();

If anyone could provide any assistance, it would be greatly appreciated.

Answer №1

One issue is that the dependency sequence within the DI inline array in your code was incorrect, causing a mismatch in the number and order of dependencies.

app.controller('CentroCustoCtrl', ['$scope', '$http', 'ValidarFormulario',
    //removed $rootScope, $timeout which weren't being used.
    function ($scope, $http, ValidarFormulario) {

Alternatively, you could add the dependencies inside the array if they are actually going to be used within the controller, like this:

app.controller('CentroCustoCtrl', ['$scope','$http','$rootScope','$timeout','ValidarFormulario', 
    function ($scope, $http, $rootScope, $timeout, ValidarFormulario) {

Answer №2

Make a simple adjustment in the line of code below

app.controller('CentroCustoCtrl', ['$scope', '$http', 'ValidarFormulario', function ($scope, $http, $rootScope, $timeout, ValidarFormulario) {

to

app.controller('CentroCustoCtrl', ['$scope', '$http', '$rootScope', '$timeout',  'ValidarFormulario', function ($scope, $http, $rootScope, $timeout, ValidarFormulario) {

This modification will resolve the issue.

Answer №3

It has come to my attention that there are issues with the controller injections in your code. Currently, it appears as follows:

App.controller('CentroCustoCtrl', ['$scope', '$http', 'ValidarFormulario', function ($scope, $http, $rootScope, $timeout, ValidarFormulario)

However, it should be structured like this:

app.controller('CentroCustoCtrl', ['$scope', '$http', '$rootScope', '$timeout', 'ValidarFormulario', function ($scope, $http, $rootScope,$timeout, ValidarFormulario)

The injectors within the square brackets [] must match with the parameters in the function definition.

Answer №4

If you are setting a module, the syntax would be:

angular.module('Services', [list of services to inject])

However, if you are retrieving a module to use it, the syntax should be:

angular.module('Services')

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