Watching the value of function in an AngularJS directive

Try placing the watch on 'editable()' instead of 'editable'

Explanation: The reason this is needed is because '&' points to a dynamically generated function wrapper for the attribute expression rather than the expression itself. This special wrapper function returns the value of account.hasRole('ROLE_ADMIN').

i would also prefer doing something like that:

scope.$watch(function () {
  return scope.editable();
}, function (val) {
   // ...
});