Is it possible for a route's URL in ui-router to be at the same level as another state while also utilizing $stateParams?

In my application, I want to implement a feature where hitting the same level of the URL will lead to either the baz state or the biz state with a parameter.

angular.module('foo')
.config(function($stateProvider){
  $stateProvider
  .state('baz', {
    url: '/baz',
    templateUrl: '/templates/baz.html'
  })
  .state('biz', {
    url: '/:biz',
    templateUrl: '/templates/biz.html',
    resolve: {
      biz: function($stateParams){
        // resolve whatever $stateParams.biz should be
      }
    }
  })
})

The issue I'm facing is that ui-router always hits the biz state and sees "baz" as a parameter for that state. Is there an elegant way to make sure anything that hits "/baz" resolves to the baz state?

I am aware that I can use $stateChangeStart and do something like this:

$rootScope.$on('$stateChangeStart', function(event, toState, toParams){
  if (toParams.biz === "baz"){
    event.preventDefault();
    $state.go('baz');
  }
})

However, this approach doesn't feel elegant and seems more like a workaround.

Answer №1

I have created a demonstration on Plunker to show that the provided snippet regarding the state is functional. The key lies in defining the states in the correct order:

.state('baz', {
    url: '/baz', // We register the URL '/baz' first, ensuring it is found and used
    ...
})
.state('biz', {
    url: '/:biz', // Any requests with '/baz' will not reach this state as it is already handled
    ...

To demonstrate how to break it, we can switch the state definitions:

.state('biz', {
    url: '/:biz', // Now, requests with '/baz' will be directed to this state
    ...
.state('baz', {
    url: '/baz', // The URL '/baz' will never reach this state definition...
    ...
})

You can see the broken link here

In summary:

The order of state definitions is crucial. The first matching url in a state is the one that will be used

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