Building a hybrid application in Angular using UpgradeModule to manage controllers

I am currently in the process of upgrading a large AngularJS application using UpgradeModule to enable running AngularJS and Angular 6 simultaneously without going through the preparation phase, which typically involves following the AngularJS style guide.

I am curious to know if this approach is feasible when dealing with numerous controllers similar to the one below:

 angular.module("MyModule").controller($scope, function ($scope) {
    // code here.
 };

Specifically, I am wondering whether UpgradeModule is designed to work exclusively with AngularJS components. As of now, it has not been successful in incorporating my existing controllers. I came across a working example that only utilizes AngularJS components:

UpgradeModule without preparation

I would greatly appreciate some advice on whether I should convert my AngularJS controllers into components before proceeding further with the upgrade process.

javascriptangularjsangulartypescripthybrid

Answer №1

Upon reviewing the documentation, it appears that in order to utilize ng-upgrade effectively, component directives are necessary.

During the preparatory phase of migration, the importance of using component directives in conjunction with Angular is emphasized.

The documentation outlines key attributes that need to be configured for an AngularJS component directive to be compatible with Angular:

  • restrict: 'E' - Components are commonly used as elements
  • scope: {} - an isolate scope, ensuring components remain separated from their surroundings
  • bindToController: {} - bindings for inputs and outputs should be done through the controller rather than $scope
  • controller and controllerAs - each component should have its own controller
  • template or templateUrl - individual templates should be assigned to components

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