Angular directive for bootstrap-switch | http://www.bootstrap-switch.org/

bootstrapSwitch.js

    .directive('bootstrapSwitch', [
        function() {
            return {
                restrict: 'A',
                require: '?ngModel',
                link: function(scope, element, attrs, ngModel) {
                    element.bootstrapSwitch();

                    element.on('switchChange.bootstrapSwitch', function(event, state) {
                        if (ngModel) {
                            scope.$apply(function() {
                                ngModel.$setViewValue(state);
                            });
                        }
                    });

                    scope.$watch(attrs.ngModel, function(newValue, oldValue) {
                        if (newValue) {
                            element.bootstrapSwitch('state', true, true);
                        } else {
                            element.bootstrapSwitch('state', false, true);
                        }
                    });
                }
            };
        }
    ]);

Thanks for this directive Ben.

I wanted to know what exactly are you doing with the $watch scope. I didn't know the bootstrapSwitch function took 2 parameters as the state. In your case, you have it as true, true and false, true.

Do you mind explaining?

You should use this watcher instead of the one you are using if you want to use a pre-defined value

scope.$watch(function () {
  return ngModel && ngModel.$viewValue;
}, function(newValue, oldValue) {
  if (newValue) {
    element.bootstrapSwitch('state', true, true);
  } else {
    element.bootstrapSwitch('state', false, true);
  }
});