When working in Angular applications you might need to create multiple controllers at first then you realise some of them perform similar tasks. By creating a base controller and extending its behaviour in other controllers you can minimise code.
// Initialize the super class and extend it.
angular.extend(this, $controller('CtrlImpl', {$scope: $scope}));
… Additional extensions to create a mixing.
}]);
The logic within the parent controller is also executed when it is created. If the extended controller has a lot of arguments then these arguments needs to be typed in the extending controller method signature. This is taken care by Angular dependency injection. You need to inject $scope.
var module = angular.module('stackoverflow.example',[]);
module.controller('simpleController', function($scope, $document) {
this.getOrigin = function() {
return $document[0].location.origin;
};
});
module.controller('complexController', function($scope, $controller) {
angular.extend(this, $controller('simpleController', {$scope: $scope}));
});Read more