Updating AngularJS templateURL to display a 404 page URL when data fails to load

Although this example may not function as intended, it serves to illustrate my goal:

Within the factory "myapp.factory('gameService', function($http, $location) {" I am retrieving data from a JSON feed by using "return $http.jsonp('api/game/' + id + '?callback=JSON_CALLBACK')". If the data fails to load, I want to switch the initially loaded templateURL to the URL for a 404 page.

var get_data = function (id) {
     return $http.jsonp('api/game/' + id + '?callback=JSON_CALLBACK')
            .then(function(response) {
               //data successfully loaded, perform required actions
            }, function(response) {
                //data failed to load
                templateUrl: 'views/page_not_found.html'; //<- How can I properly inject this so that it functions?
            });
};

Answer №1

To ensure a smooth user experience, it is recommended to create a state in the route provider for handling 'page not found' scenarios. Here's how you can do it:

app.config(function ($routeProvider) {
    $routeProvider
      .when('/', {
        templateUrl: 'views/main.html',
        controller: 'MainCtrl',
      })
      .when('/pageNotFound', {
        templateUrl: 'views/page_not_found.html'
      });
});

In your function, include the following code snippet:

var get_data = function (id) {
    return $http.jsonp('api/game/' + id + '?callback=JSON_CALLBACK')
        .then(function(response) {
           //data loaded, perform operations here
        }, function(response) {
            //error handling for data not loaded
            window.location = '/#/pageNotFound';
        });

};

Answer №2

Resolved the issue using ng-switch and ng-include

In the controller, I included the following when data is not loaded:

$scope.page_not_found = true;

Additionally, in the template I made the following modifications:

<div ng-switch on="page_not_found">
   <div ng-if="page_not_found" ng-include="'views/page_not_found.html'"></div>
</div>

This approach eliminates the need to replace the templateURL, consolidating everything within a single .html file. By hiding the main content and importing the 404 page with ng-include, this method also appears to be more efficient.

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