使用 fixy gem 的未初始化方法 first_name

Question

我正在使用这个 gem 来帮助我制作固定的文件格式化程序。我正在关注文档但收到错误

require('fixy')
class Record < Fixy::Record
  include Fixy::Formatter::Alphanumeric
  # Define record length
  set_record_length 20

  # Fields Declaration:
  # -----------------------------------------------------------
  #       name          size      Range             Format
  # ------------------------------------------------------------

  field :first_name,     10,     '1-10' ,      :alphanumeric
  field :last_name ,     10,     '11-20',      :alphanumeric

  # Any required data for the record can be
  # provided through the initializer

  def initialize(first_name, last_name)
    @first_name = first_name
    @last_name  = last_name
  end

  # 2) Using a method definition.
  #    This is most interesting when complex logic is involved.
  def last_name
    @last_name
  end
end

shinken =  Reky.new('Sarah', 'Smith')
p shinken.generate

最后一个方法：shinken.generate 给出错误：generate': undefined methodfirst_name' for # (NoMethodError)

这可能是什么原因造成的？

Answer 1

试试这个：

  def initialize(fn, ln)
    @first_name = fn
    @last_name  = ln
  end

您的方法参数名称可能与实例变量发生冲突？