我想要把那個 view 裏面地址這個欄位的顯示，轉存到另一個名為 address_full 的欄位去. 我查看了下 view.. 這個部份的程式是這樣寫的

<div class="field1">
  <b>地址:</b>
  <%= area_name(@kojenadult) %><%= @kojenadult.road_name %><%= @kojenadult.address %>
</div>

後來我將它寫到模組中

# encoding: utf-8
class Kojenadult < ActiveRecord::Base 

  before_save :student_id_to_sub_column, :filter_out_xxx_email, :address_to_address_full

protected
  def address_to_address_full
    self.address_full = :area_name(@kojenadult)#@kojenadult.road_name #@kojenadult.address
  end

嗯？噴錯誤了..再幫我看下，這指令要怎麼寫

 SyntaxError in KojenadultsController#search

/home/idarfan/kojenadults/app/models/kojenadult.rb:138: syntax error, unexpected '(', expecting keyword_end
...self.address_full = :area_name(@kojenadult)#@kojenadult.road...
...                               ^

Rails.root: /home/idarfan/kojenadults
Application Trace | Framework Trace | Full Trace

app/controllers/kojenadults_controller.rb:2:in `<top (required)>'