angularjs - Catching access to $scope properties -

is possible catch following: if have template

<div ng-controller="somecontroller">     {{notthere}} </div>

and notthere not defined in controllers $scope, can have callback fired handle this? like:

$scope.$catch(function(name) {     // name === 'notthere'     return 'someval'; }

br, daniel

well, can do

<div ng-controller="somecontroller">     {{notthere || 'someval'}} </div>

but i'm not sure if meets requirements

KBPS