Question

Using PlayFramework 2.0.1, I have a model :

class MyModel extends Model {
    @Constraints.Required
    public String someProperty;
}

class MyController extends Controller {
    public static Result action() {
        Form<MyModel> form = form(MyModel.class).bindFromRequest();

        if (form.hasErrors()) {
            // Return errors
        }
        else {
            // Process
        }
    }
}

Suppose I post with mysite.com/action?some-property=value. How can I match some-property from the request, to someProperty to the model? Is it possible?

Because so far, it hasErrors() fire true since someProperty appears missing.

Answer 1

Don’t add constraints to the model, instead validate and bind it manualy:

// ...
MyModel some = MyModel.find.byId(id);
String someFromReq = form().bindFromRequest().get("some-property");

if (someFromReq == null || someFromReq.equals("")){
    return badRequest();
}

some.someProperty
some.update();
// ...