Missing transient properties on Domain constructor (with mapped parameters)

Question

Using the map automatic creation on domain classes doesn't fill in transient properties:

class Address {
  String street
  String number
  static transients = ["number"]
}

def address = new Address(street: "King's Street", number: "23")
println address.street //King's Street
println address.number //null

Is there any good reason for that? Grails domain instantiation overrides the default Groovy behaviour?

Answer 1

You can do it by two-way.

1. If you want to make transient a field, you need to bind it.

   class Address {
   String street
   String number
   
   static constraints = {
       number bindable: true, nullable:true
   }
   static transients = ['number']
   }
   

2. You can bind it using some getter method.

   class Address {
   
   String street
   String number
   
   String getDifferentNumber() { number }
   
   static transients = ['differentNumber']
   }
   

Hope it will help you. Enjoy.