Question

So when I override the toString() method using the method below (the same way I use in almost every one of my other Domain classes across many projects), it causes a null pointer when creating an instance of this object. Removing the toString() fixes this error. No clue why. 🙁

class Vertical {

    String name

    static constraints = {
        name(nullable: true)
    }

    @Override
    String toString() {
        return name
    }
}

Answer 1

I would be a little bit more defensive and go with:

    @Override
    String toString() {
        return (name ?: "")
    }

Just to make sure not to send back nulls, since the toString ought to be printable.