Initiate a $digest cycle externally

How can I ensure that $digest triggers when calling methods from outside Angular in an application where code is loaded and eval'd at runtime? Considering that these methods may also be called from within Angular, would it be better to expose a separate interface wrapped in $scope.$apply instead of directly exposing the service methods?

Answer №1

To quickly solve this issue, consider using $evalAsync according to the documentation:

"If this function is invoked outside of a $digest cycle, a new $digest cycle will be scheduled." Check out the AngularJS docs for more information about $rootScope.Scope.

If you need to access something outside of Angular, my suggestion is to expose an element (with an ID or selector) that has a scope or controller attached. Then, you can use 'angular.element(someDomElement).scope().someFunction()' to interact with it.

This approach helps prevent unnecessary object captures and potential memory leaks, which can be difficult to debug later on.

Answer №2

Try calling the $timeout() function without specifying a time.

For instance:

function handleExternalEvent(value) {

  $timeout(function(){
    $scope.bindedValue = value;
  })
}

The concept here is that when the $timeout callback is triggered, it will be detected during the next $digest cycle. Avoid using $scope.$apply() and forcing $digest cycles as they can lead to more complications if not used correctly.

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