Navigating through states in Angular-ui-router seamlessly while performing asynchronous calls

Question

Navigating through states in Angular-ui-router seamlessly while performing asynchronous calls

Attempting to initiate an asynchronous API call through the onEnter function to a new .state.

onEnter: function(StatFactory){ 
                StatFactory.getStats(function(res){
                    console.log("callback");
            });
    }

What I have observed thus far is that it executes the asynchronous function initially, then creates the controller for the new state, and finally triggers the callback.

The function will update data within the factory, but the $scope remains unchanged.

I have considered possibly requiring $apply on the new $scope, but I am unsure how to do so.

Any suggestions? (I am still learning)

javascript angularjs asynchronous angular-ui-router mean-stack

Answer 1

Answer №1

From my understanding, the onEnter method does not grant access to a $scope for binding results.

One option is to invoke the function during controller creation (in the controller's definition block), or utilize the resolve state parameter (which will prevent activation if the asynchronous function fails).

Here is an illustration using resolve:

$stateProvider.state('home', {
 ...
 //This will wait for the getStats call to complete. You can now pass the stats to the controller.
 resolve: {
  stats: function(StatFactory) { return StatFactory.getStats(); }
 },
 controller: function($scope, stats){
  //Utilize stats
  $scope.stats = stats;
 }
});

Answer 2

From my understanding, the onEnter method does not grant access to a $scope for binding results.

One option is to invoke the function during controller creation (in the controller's definition block), or utilize the resolve state parameter (which will prevent activation if the asynchronous function fails).

Here is an illustration using resolve:

$stateProvider.state('home', {
 ...
 //This will wait for the getStats call to complete. You can now pass the stats to the controller.
 resolve: {
  stats: function(StatFactory) { return StatFactory.getStats(); }
 },
 controller: function($scope, stats){
  //Utilize stats
  $scope.stats = stats;
 }
});

Navigating through states in Angular-ui-router seamlessly while performing asynchronous calls

Answer №1

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