What is the best way to specify an optional parameter in UI-Router without using a trailing slash?

As I was migrating my Angularjs code from ng-router to UI-Router, I encountered a challenge. In ng-router, implementing optional parameters like ":userid" was quite simple. However, I realized that the same approach is not supported in ui-router. Below are the routes from my existing ng-router module:

//Define routes for view using ng-router
$routeProvider.
        when('/my-app/home/:userid?', {
            templateUrl: '/templates/partials/home/HomeView.html',
            controller: 'HomeViewController'
        })                   
        .when('/my-app/:productKey/:userid?', {
            templateUrl: '/templates/partials/productpage/ProductPageView.html',
            controller: 'ProductViewController'
        })
        .otherwise({redirectTo: '/my-app/home'});

I attempted the following in ui-router but it did not work. Despite going through multiple posts suggesting route duplication, I want to avoid it as it would clutter the code.

//Set the default route

$urlRouterProvider.otherwise('/my-app/home');
//Define routes for view (Please ensure the most matched pattern is defined at the top)
$stateProvider
        .state('viewallcards', {
            url: '/my-app/home/:userid',
            templateUrl: '/templates/partials/home/HomeView.html',
            controller: 'HomeViewController'
        })
        .state('productpage', {
            url: '/my-app/:productKey/:userid',
            templateUrl: '/templates/partials/productpage/ProductPageView.html',
            controller: 'ProductViewController'
        });

While /my-app/home/ works, /my-app/home does not. Is there a way to make it work without the trailing slash?

Furthermore, after reading posts on the same issue, I was surprised to learn that ui-router does not support this feature. Can someone confirm if this information is still valid? Your help would be greatly appreciated.

Answer №1

Take a look at this functioning demo

The usage of the params : {} object allows us to precisely define the userid as required, making it easily removable if needed.

For more information on params, refer to this link:

Passing data between states in Angular ui router without including it in the URL

  $stateProvider
    .state('viewallitems', {
      url: '/my-app/items/:userid',
      params: { 
        userid: {squash: true, value: null }, // This configuration ensures that both links work smoothly:
        //         #/my-app/items
        //         #/my-app/items/
      },
      ...
    })
    .state('itemdetails', {
      url: '/my-app/:itemKey/:userid',
      ...
    })

See it in action here

Answer №2

By default, UI Router operates in a "strict mode," which means it distinguishes between routes with or without a trailing slash. You can disable this mode if needed:

Is there a way to activate my routes regardless of whether the URL has a trailing slash or not?

To achieve this, simply set strictMode to false in your configuration block:

$urlMatcherFactoryProvider.strictMode(false)

For older versions of ui-router, you can include the following code in your module's config function. This snippet will ensure that URLs missing a trailing slash are redirected to the same URL with the slash appended.

When implementing this functionality, consider defining any optional parameters as URL parameters using a syntax like home?userid=foo, and include elements that are always present in the URL.

Sourced from the UI-Router's Wiki.

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