Communication between controller and directive

[mark goldin]

Trying to execute some code when controller needs to refresh an object in the view.

Both a controller and a directive in the same file.

var motoAdsApp = angular.module("motoAdsApp");

motoAdsApp.controller('AirportControllers', function($scope, $http, AirportService) {

    $scope.refresh

.....

});

motoAdsApp.directive('aDirective', 

function() {

    return {

      restrict: 'E',

      scope:    {

        refresh:   '='

      },

      link:     function(scope, element, attrs ) {

        scope.$watch('refresh', function() {

          alert(1234);

        })

      }

    };

}); .

At some point  in the controller I am changing refresh to true but no alert is fired. Please help.

Thanks

[dinesh kumar]

add this code in controller and check.

$timeout(function(){

   $scope.$apply();

})

Thanks

Dinesh kumar.L

[mark goldin]

Where do I add it?

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[dinesh kumar]

In the airport controller

Thanks
Dinesh kumar l

[Sander Elias]

Hi Mark,


The refresh will take place in the next digest cycle. I suspect you expect the result right away. That's not how asynchronous code works.
(remember JavaScript is single threaded!). it might help if you read through the 'Integration with the browser event loop' part in the guide.

if you are changing the refresh value in a reaction on a outside event, you need indeed to call $apply, Calling $apply will kick in

an digest cycle. This is only needed if you makes changes to your data from functions that are called from outside angular.

Regards

Sander

[dinesh kumar]

hi mark,

i have created a jsbin link resembling your scenario.compare it with you code and check where you made the mistake.

as sander said it is true,i thought u r making a change in refresh by externals means,that is why i asked you update with the code.

check and tell me it worked or not,if not show the code where you change update the refresh variable.

Regards

Dinesh kumar.L