gistfile1.ru

  def gen_number
    chars = 'ABCDEFGHJKLMNOPQRSTUVWXYZ123456789'
		code_temp = ''
		10.times { |i| code_temp << chars[rand(chars.length)] }
		code_found = false
		self.number = code_temp
		begin
			if Cart.find_by_number(number)
				self.gen_number
			end
		rescue
		end
  end