Running Angular without dependencies causes it to malfunction

I recently ventured into the world of AngularJS and started by creating a module without any services or factories. Everything was running smoothly until I decided to introduce services and factories into my code. Suddenly, things stopped working.

Here is the initial declaration that is now causing issues:

angular.module('root',[])
.controller("index",["$scope",function ($scope){
    $scope.message="My name";
    $scope.favouriteWord;
    $scope.favouriteColor;
    $scope.favouriteShape;
    $scope.value = 1;
    $scope.isBold = function() {
        return ($scope.value % 2===0);
    }

    $scope.isUnderlined = function() { 
        return ($scope.value % 5===0);
    }

    $scope.products=[
              {id: 1, name:"House Jockey"},
              {id: 2, name:"Golf club"},
              {id: 3, name:"Baseball Bat"},
              {id: 4, name:"Lacrosse stick"}];
    $scope.favsha = true;
    $scope.factor = 6;
    $scope.product = $scope.factor * 2;
}]);

The factory added:

angular.module('root',["services"])
.controller("index",["$scope","square",function ($scope,square){
    $scope.product=square;
}]);

The service added:

angular.module('root',["services"])
.controller("index",["$scope","message",function ($scope,message){
       $scope.message=message;
}]);

Answer №1

It seems that you are redeclaring the 'root' module instead of adding a new 'services' module. This can be avoided by making sure you only include 'services' in your dependencies. The 'root' module should stand alone and not need to be redeclared. For more information, refer to the module documentation: https://docs.angularjs.org/guide/module

To declare your 'services' module correctly, follow this format:

angular.module('services'])
.controller("index",["$scope","message",function ($scope,message){
$scope.message=message;
}]);

Answer №2

It's crucial not to overlook a key aspect of the angular.module function.

This function serves as both a getter and a setter, depending on the arguments provided.

angular.module('module name', [...])

When [...] represents an array of dependencies, it acts as a "setter", creating a module.

Once the module is created, you can access it to add controllers, services, etc., by omitting the dependencies array.

angular.module('module name')

Additionally, remember to define the services module before your root module.

// Define 'services' module
angular.module('services', []);

// Add factory to the 'services' module
angular.module('services').factory('factoryName', function() {
    // Implement factory...
});

// Define 'root' module
angular.module('root', ['services']);

// Add controller to the 'root' module
angular.module('root').controller('controllerName', ['$scope', 'factoryName', function($scope, factoryName) {
    // Implement controller...
}]);

Answer №3

In AngularJS, services or factories cannot be injected from the module

angular.module('root',["services"])

The above example is incorrect

Services and factories are injected directly into the controller

angular.module('root',[])
.controller("index",["$scope","service",function ($scope,service){

If your issue persists, please share the service/factory code to get a better understanding of the problem.

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