Question

I’m trying to validate a SELECT. Normally I’d use an inList, as SELECT implies a fixed number of strings, but i was wondering if there was something more elegant. In this case, I have a form with a SELECT input that has the values 0-24 as , corresponding to the next 24 months.

In my cmdObject I have

class FormCommand {

  String startSlot

  static constraints = {
      // startSlot(nullable:false, blank:false, range:0..24)
      startSlot(nullable:false, blank:false, 
                validator: { val, obj -> val.toInteger() < 25})
  }
}

I’d like to be able to use the range:0..24 statement, but from what I understand of ranges, they doesn’t apply to Strings generated by the form.

Is there a preferred way to either cast/bind the incoming string into an int so I can use the range:0..24? Or is there another way to handle this?

I could do

    inList: [ "0", "1", /* type them all out */,  "24" ]

or write some more robust custom validators, but I’m wondering if there’s a more groovy/grails solution.

Thanks.

Answer 1

class FormCommand {

  Integer startSlot

  static constraints = {
      startSlot(nullable: false, size: 0..24)
  }
}