Verifying route preconditions prior to loading controller

Question

I\'m writing a single page application in Angular, specifically angular.dart, but I\'m assuming this question still applies to AngularJS.

Take for example the followin

Answer 1

I know that following solution is not applicable to Angular.Dart, but still is worth to mention solution for ui-router:

https://github.com/angular-ui/ui-router/wiki/Frequently-Asked-Questions#how-to-create-rules-to-prevent-access-to-a-state

app.config(function($stateProvider) {
  $stateProvider.state('privatePage', {
  data: {
    rule: function(user) {
    // ...
  }
});
});
app.run(function($rootScope, $state, $currentUser) {
$rootScope.$on('$stateChangeStart', function(e, to) {
if (!angular.isFunction(to.data.rule)) return;
var result = to.data.rule($currentUser);

if (result && result.to) {
  e.preventDefault();
  // Optionally set option.notify to false if you don't want 
  // to retrigger another $stateChangeStart event
  $state.go(result.to, result.params, {notify: false});
}
});
});