Tips for ensuring the directive stays current with changes to the parent scope variable

Example:
<div ng-show="{{ display }}">
        ...
</div>

angular.module('mymodule').directive('mydirective', [
  function () {
    return {
        scope: {
            display: '='
        },
        ...
    };
}]);

Parent:
<div mydirective show="display" ng-repeat="item in items">
</div>

controller.js:
this.display = false //initial value

function updateVisibility(){
  this.display = true; //how can I notify the directive of this change?
} 

The variable "display" starts as false but later switches to true. However, the directive's scope variable "display" does not reflect this change. How can I ensure that the directive's display variable updates when the parent's display variable is modified? Should I use $scope.$watch or a different method?

Answer №1

ng-show requires an expression, not interpolation.

To resolve this issue, use the following syntax:

ng-show="show"

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