Port.delete_all
File.open("db_ports.txt", "r") do |ports|
  ports.read.each_line do |port|
    id, name, un_locode, bunker_surcharge, launch_tariff  = port.chomp.split("|")
    Port.create!(:id => id, :name => name, :un_locode => un_locode, :bunker_surcharge => bunker_surcharge, :launch_tariff => launch_tariff)
  end
end

port = Port.new(:name => name, :un_locode => un_locode, ... )
port.id = id
port.save!