Order is reversed when adding multiple rows at once

[d13r]

Using code similar to this:

list = List.new title: "List 1"
list.items.new text: "Item 1"
list.items.new text: "Item 2"
list.items.new text: "Item 3"
list.save!

The items get inserted into the list in reverse order.

This is because before_validation :add_to_list_bottom is run for all rows before any row is saved, so they all get position set to 1. Then each item that is saved causes the ones before it to be pushed further down the list.