Domain class constructors in Grails?

Question

I have some code that I want to run when a domain class object is created; in Java, I would include this code on the constructor. How can I do it in Groovy/Grails?

Thanks.

Answer 1

You can add a constructor to domain class but you also have to add the default no-arg constructor if it is not already present.

//Domain Class
class Author {
    String name

    Author() {
        //Execute post creation code
    }

    Author(String _name) {
        name = _name

        //Execute post creation code
    }
}

On the other hand, domain classes are POGOs so you can also use the map constructors if there is no extra logic that needs to be executed on object creation. Without adding any constructors you can also instantiate Author as:

Author(name: 'John Doe')