unsaved domain class with one to many returns child objects in random order

Question

So here is the situation:

I have a class. For examples sake:

    class Author {
       String name

       static hasMany = [books: Book]
       static mapping = {
         books cascade: "all-delete-orphan"
       }
    }

    class Book {
       String text

       static belongsTo = [author: Author]

       static constraints = {
         text minSize: 500
       }
   }

Now, I create a form for this one to many and when I attempt to validate, the person did not enter at least 500 characters for text, so I return the object back to the form.

The problem is THE CHILD OBJECTS ARE NOT RETURNED IN THE ORDER I CREATED THEM!!! How do you all validate child objects of a domain class that has never been saved?!?!

Thanks!

Answer 1

Try this way

class Author {
   String name
   ArrayList<Book> books = []
   static hasMany = [books: Book]
   static mapping = {
     books cascade: "all-delete-orphan"
   }
}

If not works I think you have to order by some field

You can specify the sort order this way

class Author {
   String name

   static hasMany = [books: Book]
   static mapping = {
     books cascade: "all-delete-orphan"
     books sort: 'id', order: 'desc'
   }

}