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...rchaseOrder < ActiveRecord::Base has_many :purchase_order_lines attr_accessor :new_lines def lines=(_lines) @new_lines ||= [] _lines.each do |_line_params| puts _line_params.inspect @new_lines << PurchaseOrderLine.new(_line_params) end end after_create :store_lines def store_lines new_lines.each do |line| line.purchase_order = self line.save! end end end However this does not seem elegant. How can I do it, so that the creation is done in one call and less custom code needs to be written? Regards, Tomasz Bak -- Posted via http://w...