■

/models/member.rb

class Member < ActiveRecord::Base
  REAL_ATTRIBUTE_NAMES = {
  :fname => '名前',
  :gname => '名字'
  }
  def self.real_attribute_name(key)
    REAL_ATTRIBUTE_NAMES[key.to_sym]
  end
end

/app/views/main/show.rhtml

<p>
<%= h(Member.real_attribute_name(:fname)) %>:<%= @member.fname %>
<%= h(Member.real_attribute_name(:gname)) %>:<%= @member.gname %>
</p>