Scala example of inputRadioGroup in Play2.1 - forms

Question

I'm browsing around in the documentation but I can't find an example of how to use the inputRadioGroup in my Controller.
I guess i should use this helper. But how do I bind it to my form in my controller?
I would like to show a radio group that represents the grades 1 - 5
Controller:
object Sms extends Controller {
val testForm: Form[Test] = Form (
mapping(
"firstname" -> nonEmptyText,
"lastname" -> nonEmptyText,
"password" -> tuple(
"main" -> text(minLength = 6),
"confirm" -> text
).verifying(
"Passwords don't match", passwords => passwords._1 == passwords._2
),
"email" -> tuple(
"main" -> (text verifying pattern("^([0-9a-zA-Z]([-\\.\\w]*[0-9a-zA-Z])*#([0-9a-zA-Z][-\\w]*[0-9a-zA-Z]\\.)+[a-zA-Z]{2,9})$".r, error="A valid email is req")),
"confirm" -> text
).verifying(
"Emails don't match", emails => emails._1 == emails._2
),
"grade" -> Do the magic happen here?
)(Test.apply)(Test.unapply)
)
case class Test(
firstname: String,
lastname: String,
password: String,
email: String,
grade: Int
)
}
view:
#inputRadioGroup(
testForm("grade"),
options = Seq("1"->1,"2"->2....and so on)
'_label -> "Grade",
'_error -> testForm("grade").error.map(_.withMessage("some error")))
I can't figure out how to do this.

Answer 1

In your controller you create a Seq of the possible grades and pass the Seq to your view. I like using a case class Grade better then to pass a Tuple2[String, String] to the view. But I guess that's a matter of opinion.
case class Grade(value: Int, name: String)
private val grades = Seq(Grade(1, "Brilliant"), Grade(2, "Good"), Grade(3, "Ok"))
val testForm: Form[Test] = Form (...
"grade"-> number
)(Test.apply)(Test.unapply)
def edit(id: Long) = Action {
val model = ...obtain model
Ok(views.html.edit(testForm.fill(model), grades))
}
def submit() = Action {
testForm.bindFromRequest.fold(
formWithErrors => Ok(views.html.edit(formWithErrors, grades))
}, test => {
Logger.info("grade: " + grades.find(_.value == test.grade).map(_.name))
//save model...
Redirect(...
})
}
in your view, you map the grades Seq to a Tuple2[String, String] to feed inputRadioGroup
#(testForm: Form[Test], grades: Seq[Grade])
#inputRadioGroup(contactForm("grade"),
options = grades.map(g => g.value.toString -> g.name),
'_label -> "Grade")