"Troubleshooting a blank page issue in Angular UI Router caused by query string

I've been struggling with an issue related to query string parameters for quite some time. When I navigate to /, everything works perfectly fine. However, if I try something like /?anything, it simply doesn't work. These are the configurations in my two separate files:

var access = accessConfig.accessLevels;
$stateProvider.state('store', {
  abstract: true,
  templateUrl: 'store/main.html',
  data: {
    access: access.user
  }
});

$stateProvider.state('store.home', {
  url: '/?cart',
  views: {
    '': {
      templateUrl: 'store/home/home.html',
      controller: 'store.home as vm'
    }
  },
  data: {
    title: 'Home'
  }
});

Whenever I visit /, everything works as expected without any problems. However, if I attempt to go to /?cart or /?anything, I end up on a blank page. Even though I have a stateChangeStart event that is triggered when navigating to /, it is not being invoked when I navigate to /?anything.

Just to mention, I am utilizing html5mode(true). Any insights on what might be the issue here?

Interestingly, the functionality works when using ui-sref, but not when directly copying/pasting URLs into the address bar.

Answer №1

In order to demonstrate the accuracy of this scenario and state definition, I have created a functional plunker. It clearly shows that as long as the cart parameter is provided with a value, everything works correctly.

The following examples will work successfully as we are passing the cart parameter:

<a ui-sref="store.home({cart:458})">
<a ui-sref="store.home({cart:'xyz'})">

Additionally, to accommodate the requirements of the plunker environment, the inclusion of <base href="" is necessary, as seen in the working code snippet:

<div ng-controller="appCtrl" >
  <a href="{{path}}?cart=abc">
  <a href="{{path}}?cart=123">
  ...

The variable path in this context refers to:

.controller('appCtrl', ['$scope',function($scope) {
    $scope.path = document.location.pathname;
}])

You can verify the functioning of these implementations here, ensuring that html5Mode is enabled

EXTEND

To further showcase that the functionality remains intact even when passing parameters through the address bar, a specialized plunker has been developed:

By navigating to the provided link, one can witness how the parameter /?cart=myTestParam is passed and displayed within the template via

<pre>{{$stateParams | json}}</pre>
:

{
  "cart": "myTestParam"
}

Feel free to inspect the actual source code here

An essential component in the implementation involves the <head> section and proper configuration of html5 mode using the base element

with the correct setup for enabling html5 mode:

$locationProvider.html5Mode({enabled: true, requireBase: true});

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