everyone.
I have a really strange (for me) problem here. I am trying to inject the $q lib in one of my controllers and when I try to console.log() it, it returns "undefined". I am injecting the same library in one of my services, and it's working there! Let me show you:
The service:
(function() { 'use strict';
angular
.module('app.grid')
.factory('GridData', GridData);
GridData.$inject = ['$http', '$q'];
function GridData($http, $q) {
...
The controller (not working):
(function() {
'use strict';
angular
.module('app.grid')
.controller('GridCtrl', GridCtrl);
GridCtrl.$inject = ['$log', '$scope', 'GridData', '$q'];
function GridCtrl($log, $scope, GridData, $rootScope, $q) {
console.log($q); // Returns "undefined"
...
I wonder if any of you guys had had this same problem before? It's probably something real stupid, like it always is, but I can't see it for some reason :(
Cheers,
H
You need to add the $rootScope to your $inject array:
GridCtrl.$inject = ['$log', '$scope', 'GridData', '$rootScope', '$q'];
Or remove it from the argument list if it's not needed:
function GridCtrl($log, $scope, GridData, $q) {
You have one too many arguments:
GridCtrl.$inject = ['$log', '$scope', 'GridData', '$q'];
function GridCtrl($log, $scope, GridData, $rootScope, $q) {
// ^
}
You're not injecting $rootScope. The $q service will be available inside your controller, it will just be referred to by $rootScope instead of $q. Remove that and it should work! Alternatively, add '$rootScope to the dependency array.
Related
OK so I am new to angular and I have been searching for answers all over the web to this problem. I am having an unknown provider error and I am not able to find the right answer I have tried multiple replies from here on stack overflow and alot of other places but it has not helped me find the right answer for it yet.
I have the Module.
var app = angular.module('app', ['ngRoute','app.student']).config(['$httpProvider', '$routeProvider', function ($httpProvider,$routeProvider) {
//Various code
}]);
Here is my Controller
angular.module('app.student', []).controller('StudentCtrl', ['StudentService', '$scope', '$http', function (StudentService, $scope, $http) {
//Code
}]);
And now My service
angular.module('app.student', []).service('StudentService', ['$http', function ($http) {
// Some More Code
}]);
I am still new to this language, I have again tried multiple answers on Stackoverflow and None of the answers are working for me. So I just decided to ask for some help. Thanks
P.S. if you need more of my code just let me know.
You are creating the app.student module twice.
First you create your module (and then you also create a controller):
angular.module('app.student', []).controller('StudentCtrl', ['StudentService', '$scope', '$http', function (StudentService, $scope, $http) {
//Code
}]);
Then once it's created, just retrieve it. Don't pass in an array of dependencies, or you will create it again:
angular.module('app.student').service('StudentService', ['$http', function ($http) {
// Some More Code
}]);
You do not need to have app.student as a dependency,
var app = angular.module('app', ['ngRoute']).config(['$httpProvider', '$routeProvider', function ($httpProvider,$routeProvider) {
//Various code
}]);
your controller code should be,
angular.module('app').controller('StudentCtrl', ['StudentService', '$scope', '$http', function (StudentService, $scope, $http) {
//Code
}]);
and service should be,
angular.module('app').service('StudentService', ['$http', function ($http) {
// Some More Code
}]);
What is the correct way to inject a service into a controller in Angular?
I have written a service and i’d like to use it in my controllers. But i keep getting an error. Maybe it would be easy for someone to spot my mistake…
authController.js
(function() {
'use strict';
angular
.module('authApp')
.service('authService', function($auth, $state, $http, $rootScope, envService, $scope) {
// some code
})
.controller('SignupController', SignupController, ['$scope', 'authService’]);
function SignupController($http, $scope, $rootScope, $location, envService, authService) {
// want to use my authService here
}
...
At this point I get the following error :
angular.js:12477 Error: [$injector:unpr] Unknown provider: $scopeProvider <- $scope <- authService
What is wrong with the way I have injected authService into my signupController??
Thanks.
You have an error declaring your controller. Declaring a controller with the array syntax receives the name of the controller as a String as first parameter, and an array as a second parameter. The last element of the array must be the a function with all the controller logic. That function must have as many parameters as previous elements in the array itself. In your case it should be something like:
(function() {
'use strict';
angular
.module('authApp')
.service('authService', function($auth, $state, $http, $rootScope, envService, $scope) {
// some code
})
.controller('SignupController', ['$http', '$scope', '$rootScope', '$location', 'envService', 'authService', function ($http, $scope, $rootScope, $location, envService, authService) {
// Use your authService here
}]);
...
You can check the styleguide to write your controllers, services and inject your dependencies in a better way.
I'd like to inject $ionicPlatform abstraction into the service, but seemed I'm doing this wrong way. How should I use $ionicPlatform with service?
(function () {
"use strict";
angular.module('service', []).service('BBNService', ["$ionicPlatform", function ($http, $localStorage, $ionicPlatform) {
This code making $ionicPlatform undefined.
Inject ionic dependency & Remove $http if you not using it as follows,
angular.module('service', ['ionic'])
.service('BBNService', ["$localStorage", "$ionicPlatform",
function ($localStorage, $ionicPlatform) {
}]);
It's undefined because you wrong the order. (use ionic.Platform)
Replace with this:
angular.module('service', [])
.service('BBNService', ["$http", "$localStorage",
function ($http, $localStorage) {
//use this
var $ionicPlatform = ionic.Platform;
}]);
I am trying to create a service to do some AJAX requests.
However, my service keeps getting undefined when I try to do something with it in my controllers. Here is my code.
I have found a lot of examples on here, and I've tried to follow a lot of them but no matter what I do my service keeps getting undefined.
My service:
MyApp.factory('myService', function($http) {
return {
findAll: function() {
return $http.get('/findAll')
.then(function(result) {
return result.data;
});
}
}
});
My Controller:
MyApp.controller('UserController', ['$scope', '$http', 'myService', function($scope, $http, $log, myService) {
// Whatever I do with myService here it gets undefined.
//$scope.test = myService.findAll();
//myService.findAll();
}]);
I assume I don't inject it correctly but I can't see whats wrong. I'm fairly new to Angular so..
Any pointers would be appreciated.
Remove $log from the injection. You are currently "naming" the myService service to $log and therefore myService inside the controller is undefined.
MyApp.controller('UserController', ['$scope', '$http', 'myService',
function($scope, $http, myService) {
// Whatever I do with myService here it gets undefined.
//$scope.test = myService.findAll();
//myService.findAll();
}]);
2nd solution
To avoid having to "name" the services like this it's acceptable to inject them without naming them.
MyApp.controller('UserController', function($scope, $http, myService) {
// Whatever I do with myService here it gets undefined.
//$scope.test = myService.findAll();
//myService.findAll();
});
Just remember to remove the closing bracket aswell.
I have simple module with controller and factory. I want to use factory within my controller.
So I should add the name of factory within my function() of controller. Adding this, so my controller doesnt work anymore (blank page, no errors)
var app = angular.module('main', ['ngAnimate'])
app.factory('Socket', function($scope) { ... });
My controller works if:
app.controller('DemoCtrl', function($scope, $http, $filter, ngTableParams, $timeout) {...});
My controller does not work if:
app.controller('DemoCtrl', function($scope, $http, $filter, ngTableParams, $timeout, Socket) {...});
Can anyone help me on this?
You can't insert $scope into a service in angular, because it has no meaning in the context of services. $scope is for controllers only, so remove the $scope dependency from your service:
app.factory('Socket', function() { ... });