rootLocale doesn't seem to do anything

[mkoczorowski]

url: $urlMatcher.compile
en: '/'
fr: '/:locale'

Without locale prefix no view is being loaded.

[gerisztein]

Same here :/
Can you help us @vizo?

Actually if you change states using $state.go() everything works like a charm, but if you try to access directly the url you're redirected to .otherwise

[vizo]

Sorry for late reply. I think rootLocale doesn't work anymore.

So on root state you should redirect user to state with locale (like joomla does)

          // App root
          .state('app.root', {
            url: '/',
            resolve: {
              currentLocale: function() { return 'en'; }, // Here you can resolve server's locale or detect it from browser
              redirectToLocale: ['$state', 'currentLocale', function ($state, currentLocale) {
                $state.go('app.locale.home', {locale: currentLocale}, {location: 'replace'}); // Redirect user to currentLocale
              }]
            }
          })

          // App locale root
          .state('app.locale', {
            url: '/:locale',
            abstract: true,
            resolve: {
              currentLocale: [ '$stateParams', function($stateParams) { return $stateParams.locale; }] // Here you can save user's locale back to server if user visits e.g. /en
            }
          })

And for all states with locale you should always use /:locale prefixes like

          .state('app.locale.home', {
            url: $i18nUrlMatcherFactoryProvider.compile({
              en: '/:locale',
              sl: '/:locale'
            }),
            views: {
              ...
            }
          })

          .state('app.locale.book', {
            url: $i18nUrlMatcherFactoryProvider.compile({
              en: '/:locale/book',
              sl: '/:locale/knjiga'
            }),
            views: {
              ...
            }
          })

I hope it's clear enough. If not, just ask :)

@gerisztein If you access url directly (or if you refresh page) it asks your server first, what to serve.
So you should take care on server that all urls are pointing to same index.html where ui-router loads.
For e.g. in express put on the end of all other routes:

app.use(function(req, res) {
  res.render('index');
});

This means that whatever url you will enter directly /, /en, /en/book ... it will serve index file and then ui-router will handle it.