gistfile1.rb

#model

class Week < ActiveRecord::Base
  def weeks=(weeks)
    self.week = weeks.reject(&:blank?) * ","
  end

  def weeks
    self.week.split(",")
  end
end



<%# view %>

<h1>New week</h1>

<% form_for(@week) do |f| %>
  <%= f.error_messages %>

  <p><label for="week_name">Name</label><br/>
  <%= text_field 'week', 'name' %></p>

  <p><label for="week_week">week</label><br/>
    <%= f.check_box( "weeks", {:multiple => true}, 1, nil) %>월
    <%= f.check_box( "weeks", {:multiple => true}, 2, nil) %>화
    <%= f.check_box( "weeks", {:multiple => true}, 3, nil) %>수
    <%= f.check_box( "weeks", {:multiple => true}, 4, nil) %>목
    <%= f.check_box( "weeks", {:multiple => true}, 5, nil) %>금
    <%= f.check_box( "weeks", {:multiple => true}, 6, nil) %>토
    <%= f.check_box( "weeks", {:multiple => true}, 7, nil) %>일
  <p>
    <%= f.submit 'Create' %>
  </p>

<% end %>

<%= link_to 'Back', weeks_path %>