The presence of a backslash is preventing the state from transitioning to '/{username:[a-zA-Z0-9]{3,20}}' within the AngularJs UI-router

In my abstract root state named 'site', the empty URL ('') contains two child states: 'profile' and 'home'. The URL for home is '/', while the URL for profile is '/{username:[a-zA-Z0-9]{3,20}}'. I have encountered an issue where despite trying multiple times to navigate to the profile state, it always redirects me to the home state.

However, when I modify the home state URL to something like '/home', I am then able to access the profile state. After searching online, I could not find any information on this particular problem. Could this be a bug or am I missing something in my implementation?

Below is the code snippet for $stateProvider:


$stateProvider.
    state('site', {
        url: '',
        abstract: true,
        views: {
            '': {
                templateUrl: 'views/site.html'
            },
            'navbar@site': {
                templateUrl:'views/navbar.html'
            }
        },
        data:{
            access: access.public
        }
    }).
    state('site.home', {
        url: '/',
        templateProvider :['$rootScope','$http','$state',function($rootScope,$http,$state){
            
            var template = 'views/main_new.html';
            if($rootScope.User.isLoggedIn()){
                template = 'views/new_room_me.html'
            }
            return $http.get(template).then(function (resp) {
                return resp.data;
            });
        }]
    }).
    state('site.profile',{
        url:'/{username:[a-z0-9A-Z]{3,20},strict:true}',
        templateUrl:'views/new_room_friend.html'
    });


   $urlRouterProvider.otherwise('/ankit');

Answer №1

If you take a look at this sample, you'll see that I made some modifications to the state declaration:

.state('site.profile',{
        url:'/{username:[a-z0-9A-Z]{3,20}}',
        ...
    })
.state('site.home', {
        url: '/',
        ...
    })

The reason behind rearranging the order of state declarations is because the ui-router url engine processes states in the sequence they are declared, attempting to match a url. This adjustment ensures that we have a functioning definition.

However, I would recommend:

Using a specific keyword to differentiate urls, for instance

url:'/profile/{username:[a-z0-9A-Z]{3,20}}',

This not only aids the engine in identifying the correct state based on the url but also offers clarity and description for users/readers of the url.

In any case, simply updating the state declaration should resolve the issue at hand...

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