How do I access my angular scope from jQuery dialog buttons?

All we need is an easy explanation of the problem, so here it is.

http://plnkr.co/edit/Rf0VItthVBg6j0z7KudO

I’m using a jQuery dialog and want to use the dialog buttons, but I don’t know how to get at the scope to trigger a (currently non-existent) $http or $resource call back to the server with the updated model when the jQuery dialog button is clicked. I feel as if I’m going about this wrong, but I don’t know what direction to go here.

How to solve :

I know you bored from this bug, So we are here to help you! Take a deep breath and look at the explanation of your problem. We have many solutions to this problem, But we recommend you to use the first method because it is tested & true method that will 100% work for you.

Method 1

You can use Angular functions to find the scope attached to an element and call a function on it. I prefer to really abstract it away and find the root of the ng-app and broadcast an event into the app so that the outside-code doesn’t know about the specifics of the inside code except for the event that you broadcast.

angular.$externalBroadcast = function (selector, event, message) {
    var scope = angular.element(selector).scope();

    scope.$apply(function () {
        scope.$broadcast(event, message);
    });
};

Then, from any code, you can call something like:

angular.$externalBroadcast('#app-container', 'doSomething', parameters);

And inside the app, I’d do something like this:

$rootScope.$on('doSomething', function(parameters) {
    // handle the external event.
});

If you don’t like this approach, just get the scope:

var scope = angular.element(selector).scope();

And do something with it. Just make sure you call scope.$apply or else the digestion cycle won’t happen.

Method 2

Best way is to add directive to control. It is a bad idea to add jQuery with angularjs along side. Directive are made to do this kind of manipulation.

Here’s I have modified your plunkr to show you what you can do with directives.

app.directive('date', function() {
  return {
     restrict: 'A',
     require: '^ngModel',
     link: function(scope, elm, attrs, ctrl) {
       var dp = $(elm);

       dp.datepicker({
         onSelect: function(dateText) {
           scope.$apply(function() { // Apply cause it is outside angularjs
            ctrl.$setViewValue(dateText); // Set new value of datepicker to scope
           });
        }
       });

       scope.$watch(attrs.ngModel, function(nv) {
         dp.datepicker('setDate', nv); // Update datePicker date when scope change
       });
     }
  }

Note: Use and implement method 1 because this method fully tested our system.
Thank you 🙂

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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