Unknown provider error when deploying Rails/AngularJS app to Heroku - ruby-on-rails-3

Question

I have a Rails/AngularJS app which works fine in local development environment.
However, when I deploy this app to Heroku the AngularJS doesn't work an returns this error:
Unknown provider: eProvider <- e
I did a bit of research and it seems it has something to do with the precompiling and minification of the assets, but I don't know what to do to solve this. Any ideas? Thanks!
This is how the controller looks:
function RemindersCtrl($scope, $http) {
$http.get('/reminders.json').success(function(data) {
$scope.reminders = data;
console.log(data);
});
}
And this is the code in the view:
%section.reminders
%div{"ng-controller" => "RemindersCtrl"}
%ul
%li{"ng-repeat" => "reminder in reminders"}
.title {{reminder.title}}
Update: I changed the controller to this, but with the same result:
var RemindersCtrl = function($scope, $http) {
$http.get('/reminders.json').success(function(data) {
$scope.reminders = data;
console.log(data);
});
}
RemindersCtrl.$inject = ['$scope','$http'];

Answer 1

According to AngularJS tutorial (http://docs.angularjs.org/tutorial/step_05) you can either add this to the controller to prevent minification problems:
function RemindersCtrl($scope, $http) {
...
}
RemindersCtrl.$inject = ['$scope', '$http'];
or instead of defining a function like this:
function RemindersCtrl($scope, $http) {
...
}
it should be done like this:
var RemindersCtrl = ['$scope', '$http', function($scope, $http) {
...
}];

Answer 2

You are probably defining your controller as FooController = function($http) {}, you should define as FooController = ["$http", function($http){}]
See mroe here

Answer 3

Angular team (and also generally speaking) recommends that we do not pollute the global scope.
.controller method,
var myApp = angular.module('myApp',[]);
myApp.controller('GreetingCtrl', ['$scope', function($scope) {
$scope.greeting = 'Hola!';
}]);
worked fine for me. This is documented on Angular Understanding Controllers documentation