angularjs ui-router stateparams invisible loses on page refresh

Question

Im working on a angular project, where i have set my states as shown below.

$stateProvider.state(\'UserPanel\', {
    url: \'/user\',
    params: { userId: n         


        

Answer 1

I faced the same problem and solved it with this code

angular.module('app').run(function($rootScope, $state, localStorageService) {

  $rootScope.$on('$stateChangeStart', function(event, toState, toParams, fromState, fromParams) {
   var prefix = "stateParams.";
   var fromStateName = prefix + fromState.name;
   var toStateName = prefix + toState.name;
   var f = true;
   for (var k in toState.params) {
     f = f && (JSON.stringify(toParams[k]) == JSON.stringify(toState.params[k]));
   }
   if (f && localStorageService.get(toStateName) != null) {
     event.preventDefault();
     var savedToParams = localStorageService.get(toStateName); //retrieving toParams from local storage
     localStorageService.remove(toStateName);
     for (var k in toState.params) {
       toParams[k] = savedToParams[k]; //update only the params {} not url params
     }
     $state.transitionTo(toState,toParams);
   } else {
     var toSave = {};
     for (var k in toState.params) {
       toSave[k] = toParams[k]; //save only the params {} not url params
     }
     localStorageService.set(toStateName,toSave);
   }
  });

});

Gist

I try to use the localStorageService to 'cache' the params between state transitions.

when going from state A to state B , I remove the params previously stored for A.

I then check to see if the params that are being sent to B match the params in the state definition of B, and if they do match I load the params from the localStorage , because this means that the user has hit refresh and the params got reset.

I tested this code on a couple of cases , but it is still not fully tested.