is it possible to access attributes set in HTML in an angular.dart constructor?

问题

I cann´t access the attribute val in the constructor of this component

@NgComponent(
    selector: 'dartcomp',
    templateUrl: 'dartComp.html',
    publishAs: 'ctrl',
    map: const
    { 
      'val' : '@val'
    }
)
class DartComp
{ String val;

  DartComp()
  { print("construktor DartComp $val");
  }
}

which was used in index.html

<dartcomp id="dc" val="x"></dartcomp>

Is there a way to access val in the constructor?

回答1:

Extend NgAttachAware, implement the method attach() and access your field there. When attach() is called your val is already properly initialized.

来源：https://stackoverflow.com/questions/21172775/is-it-possible-to-access-attributes-set-in-html-in-an-angular-dart-constructor