Variable scope not properly maintained when there is a change in the Firebase promise

I am currently working on developing a controller function to handle signup submissions using Firebase. However, I've encountered an issue where the variables within the scope (controllerAs: $reg) do not seem to update correctly when modified inside a promise.

Whenever $reg.loading is set to true, it reflects accurately in the template. But, if changed to false, the scope variable updates in the controller, yet the template fails to recognize this change.

$reg.submit = () => {
  $reg.loading = true;

  firebase.auth().createUserWithEmailAndPassword($reg.user.email, $reg.user.password)
    .catch(error => {
      $reg.loading = false;
    });
};

The template essentially consists of a form that triggers the $reg.submit() function upon clicking the submit button (tested with both ng-submit and ng-click).

Answer №1

Implement $scope.$apply()

$scope.$apply(() => {
   $reg.loading = false;
});

Answer №2

After some troubleshooting, I finally discovered my mistake.

I realized that I was using the firebase common object, which was not compatible with Angular. Instead, I needed to utilize the $firebaseAuth object (which is injected into the controller) from the AngularFire library.

By making this adjustment, I now have a promise that takes care of the $digest loop in Angular:

$reg.submit = () => {
  $reg.loading = true;

  $firebaseAuth.$createUserWithEmailAndPassword($reg.user.email, $reg.user.password)
    .catch(error => {
      $reg.loading = false;
    });
};

Answer №3

Consider adjusting the scope to rootScope.

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