Optional checkbox in Scala Play - form does not validate - scala

Question

I just started with Play and I'm trying to create a form with an "optional checkbox". The user must agree to the general terms (don't share your login credentials, ...). The second checkbox is optional and the user can decide whether this hint should be shown in the future again when he logs in the next time:
I created some form validation code in my Scala controller:
case class AbuseStatus(abuseHintAccepted: Boolean, dismissAbuseHintInFuture: Boolean)
val abuseHintForm = Form(
mapping(
"abuseHintAccepted" -> checked("Please accept the general terms."),
"dismissHintInFuture" -> boolean
)(AbuseStatus.apply)(AbuseStatus.unapply) verifying ("you must accept the general terms", result => result match {
case abuseStatus =>
{
abuseStatus.abuseHintAccepted.booleanValue()
}
})
)
I'm using the following method to handle the POST request when the form has been sent.
def sendAbuseHintForm = Action {implicit request =>
abuseHintForm.bindFromRequest.fold(
formWithErrors =>
{
Logger.info("Form did not validate")
formWithErrors.errors.map(error => Logger.info(error.messages.mkString(",")))
Ok(views.html.abuseHint(formWithErrors))
},
abuseStatus =>
{
if(abuseStatus.dismissAbuseHintInFuture)
{
Logger.info(">>>dismissHintInFuture = true")
Ok(views.html.home()).withCookies(showAbuseHintCookie)
}
else
Ok(views.html.home())
}
)
}
The form does not validate if both checkboxes are set to true. I would like it to validate when at least the first checkbox is set to true (the second is optional). How can I achieve this and what is the difference between
"abuseHintAccepted"->checked("...")
and
"dismissHintInFuture"->boolean
They both return a Mapping[Boolean].

Answer 1

I have tried your example using Play 2.3.8 and it does appear to validate correctly when passing these parameters:
abuseHintAccepted:true
dismissHintInFuture:true
It would be worth making sure the form field names and values (true/false) that are posted are actually correct in all of the scenarios you describe (you haven't supplied that part of the code).
The difference between boolean and checked(msg) is that checked(msg) has validation applied ensuring the value is true - it is equivalent to boolean verifying (msg, _ == true) - (see Play framework source).
Finally, the checked() validation you have for abuseHintAccepted means that the verifying check on the whole form is not needed, but this shouldn't affect the behaviour of the form (it is just duplicate validation).