How to bind complex types in play-framework 2.0

Question

I have a model class in the following structure:

public class User {
   public String name;
   public Long id;
}

public class Play {
   public String name;
         


        

Answer 1

You can make use of custom DataBinder In the play.scla.html:

@form (routes.PlayController.update()) 
{
  
}

in your method in the controller

public static Result update()
{
  // add a formatter which takes you field and convert it to the proper object
  // this will be called automatically when you call bindFromRequest()

  Formatters.register(User.class, new Formatters.SimpleFormatter(){
    @Override
    public User parse(String input, Locale arg1) throws ParseException {
      // here I extract It from the DB
      User user = User.find.byId(new Long(input));
      return user;
    }

    @Override
    public String print(User user, Locale arg1) {
      return user.id.toString();
    }
  });
  Form formPlay = form(Play.class).bindFromRequest();
  Play playObj = formPlay.get();
}