The issue of AngularJS routeProvider not redirecting properly

On my index page, I have the following code:

<!DOCTYPE html>
<html ng-app="libraryApp">
<head>
<meta charset="UTF-8">
<title>Angular Library</title>
<script
    src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<script src="page/js/angular-route.js"></script>
<script src="page/js/app.js"></script>
<script src="page/js/controllers.js"></script>
<script src="page/js/services.js"></script>
</head>
<body>
    <div ng-view></div>
</body>
</html>

I also have an app.js file with the following content:

var app = angular.module('libraryApp', ['ngRoute', 'libraryControllers']);

app.config(['$routeProvider', function($routeProvider){
    $routeProvider
        .when('/', {
            templateUrl: 'page/booksList.html',
            controller: 'booksListController'
        })
        .when('/library/bookDetails/:bookId', {
            templateUrl: 'page/bookDetails.html',
            controller: 'bookListController'
        });
}]);

This is the controller code snippet:

var libraryControllers = angular.module('libraryControllers', ['libraryServices']);


    libraryControllers.controller('booksListController', function($scope, $http, BookFactory){

            BookFactory.getAllBooks()
            .success(function(response){
                $scope.books = response;
            });

            $scope.bookIsNotSelected = false;

            $scope.selectedBook = { id: 0 };

            $scope.showDetails = function(){

                if ($scope.selectedBook.id == 0){
                    $scope.bookIsNotSelected = true;
                }
                else {
                    BookFactory.showDetails($scope.selectedBook.id);
                }
            };  
        });

And here's the services.js snippet:

var services = angular.module('libraryServices', []);

services.factory('BookFactory', function($http) {

    var bookFactory = {};

    bookFactory.getAllBooks = function() {
        return $http.get('getBooksList');
    }

    bookFactory.showDetails = function(bookId){
        var request = 'library/bookDetails/' + bookId;
        return $http.get(request);
    };

    return bookFactory;
});

Whenever I click the button with the `showDetails()` ng-click function, it sends a request to the Spring Rest Controller to retrieve specific book data. While the JSON object is retrieved successfully, the routeProvider doesn't redirect me to the `bookDetails.html` page.

https://i.sstatic.net/wudo6.png

The HTTP GET request seems correct. I'm trying to understand why it fails to redirect me to the `bookDetails.html` page. Any suggestions or ideas on what might be causing this issue? I'd appreciate any help as I'm currently stuck.

Answer №1

When making an ajax request, the URL in the browser does not change. To redirect between routes, you must utilize the $location service and remember to inject the $location dependency in the controller function.

Use $location.path to direct to a specified path.

bookFactory.showDetails = function(bookId){
    var request = 'library/bookDetails/' + bookId;
    return $location.path(request);
};

Instead of using the ng-click directive, consider utilizing href on your anchor tag.

<a ng-href="/library/bookDetails/{{obj.bookId}}">Show Details</a>

To fully resolve the issue, create a new controller specifically for the bookDetails page rather than repurposing the booksListController. This new controller can be named as bookDetailsController, thus altering the details route as follows:

.when('/library/bookDetails/:bookId', {
   templateUrl: 'page/bookDetails.html',
   controller: 'bookDetailsController'
});

The bookDetailsController will handle loading the book details through an ajax call. Essentially, there will be a method that retrieves a parameter from the URL using the $routeParams service like $routeParams.bookId, then sends this bookId to the server to fetch the book detail.

Answer №2

A redirection doesn't happen when initiating a HTTP GET request; it happens when modifying the URL on the client-side:

Include $location in your controller:

libraryControllers.controller('booksListController', function($scope, $http, BookFactory, $location){

Then you can utilize it like this:

$scope.showDetails = function(){
   if ($scope.selectedBook.id == 0){
      $scope.bookIsNotSelected = true;
   }
   else {
     BookFactory.showDetails($scope.selectedBook.id).then(function(res) {
        // The actual redirect takes place here
        $location.path('library/bookDetails/' + $scope.selectedBook.id);
     });
   }
 };

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