"Uncaught Error: [$injector:unpr]" with angular after deployment
AngularjsAngularjs Problem Overview
I have a fairly simple Angular application that runs just fine on my dev machine, but is failing with this error message (in the browser console) after I deploy it:
Uncaught Error: [$injector:unpr] http://errors.angularjs.org/undefined/$injector/unpr?p0=tProvider%20%3C-%20t%20%3C-%20%24http%20%3C-%20%24compile
No other message besides that. It happens when the page first loads.
I'm running ASP.NET MVC5, Angular 1.2RC3, and pushing to Azure via git.
Googling hasn't turned up anything interesting.
Any suggestions?
EDIT:
I'm using TypeScript, and defining my dependencies with the $inject
variable, e.g.:
export class DashboardCtrl {
public static $inject = [
'$scope',
'$location',
'dashboardStorage'
];
constructor(
private $scope: IDashboardScope,
private $location: ng.ILocationService,
private storage: IDashboardStorage) {
}
}
I believe that should (or is intended to) get around the local variable renaming problems that arise during minification and that can cause this error.
That said, it clearly has something to do with the minification process, as when I set BundleTable.EnableOptimizations = true
on my dev machine, I can reproduce it.
Angularjs Solutions
Solution 1 - Angularjs
If you follow your link, it tells you that the error results from the $injector not being able to resolve your dependencies. This is a common issue with angular when the javascript gets minified/uglified/whatever you're doing to it for production.
The issue is when you have e.g. a controller;
angular.module("MyApp").controller("MyCtrl", function($scope, $q) {
// your code
})
The minification changes $scope
and $q
into random variables that doesn't tell angular what to inject. The solution is to declare your dependencies like this:
angular.module("MyApp")
.controller("MyCtrl", ["$scope", "$q", function($scope, $q) {
// your code
}])
That should fix your problem.
Just to re-iterate, everything I've said is at the link the error message provides to you.
Solution 2 - Angularjs
Ran into the same problem myself, but my controller definitions looked a little different than above. For controllers defined like this:
function MyController($scope, $http) {
// ...
}
Just add a line after the declaration indicating which objects to inject when the controller is instantiated:
function MyController($scope, $http) {
// ...
}
MyController.$inject = ['$scope', '$http'];
This makes it minification-safe.
Solution 3 - Angularjs
This problem occurs when the controller or directive are not specified as a array of dependencies and function. For example
angular.module("appName").directive('directiveName', function () {
return {
restrict: 'AE',
templateUrl: 'calender.html',
controller: function ($scope) {
$scope.selectThisOption = function () {
// some code
};
}
};
});
When minified The '$scope' passed to the controller function is replaced by a single letter variable name . This will render angular clueless of the dependency . To avoid this pass the dependency name along with the function as a array.
angular.module("appName").directive('directiveName', function () {
return {
restrict: 'AE',
templateUrl: 'calender.html'
controller: ['$scope', function ($scope) { //<-- difference
$scope.selectThisOption = function () {
// some code
};
}]
};
});
Solution 4 - Angularjs
If you have separated files for angular app\resources\directives and other stuff then you can just disable minification of your angular app bundle like this (use new Bundle() instead of ScriptBundle() in your bundle config file):
bundles.Add(
new Bundle("~/bundles/angular/SomeBundleName").Include(
"~/Content/js/angular/Pages/Web/MainPage/angularApi.js",
"~/Content/js/angular/Pages/Web/MainPage/angularApp.js",
"~/Content/js/angular/Pages/Web/MainPage/angularCtrl.js"));
And angular app would appear in bundle unmodified.
Solution 5 - Angularjs
If you have separated files for angular app\resources\directives and other stuff then you can just disable minification of your angular app bundle like this (use new Bundle() instead of ScriptBundle() in your bundle config file):
Solution 6 - Angularjs
Add the $http, $scope services in the controller fucntion, sometimes if they are missing these errors occur.
Solution 7 - Angularjs
I had the same problem but the issue was a different one, I was trying to create a service and pass $scope to it as a parameter.
That's another way to get this error as the documentation of that link says:
> Attempting to inject a scope object into anything that's not a controller or a directive, for example a service, will also throw an Unknown provider: $scopeProvider <- $scope error. This might happen if one mistakenly registers a controller as a service, ex.:
angular.module('myModule', [])
.service('MyController', ['$scope', function($scope) {
// This controller throws an unknown provider error because
// a scope object cannot be injected into a service.
}]);