ruby on rails ½â¾ömultiple select ´æ´¢ºÍupdate
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vendorÊý¾Ý¿â±íÓÐ×Ö¶Îservice_category varchar(100)
<% form_for :vendor, @vendor, :url => sellers_path do |f| %>
<%= f.select(:service_category,
["Painting","Plumbing","Decor"], {}, {:multiple => true, :size => 3}) %>
<%= f.submit "Register"%>
<% end %>
url Ö¸¶¨µ½Äĸöcontrol action£¬ÓõÄÊÇrails rest¼¼Êõ
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ËùÒÔÔÚvendor modelÖмÓÈë
def service_category=(values)
if !values.nil?
write_attribute('service_category', values.join(','))
end
end
def service_category
if !read_attribute('service_category').nil?
read_attribute('service_category').split(',')
end
end
´æÈëÊý¾Ý¿âÖеÄÊÇpainting£¬plumbing
ÔÚupdate actionÖÐ@vendor = Vendor.find(id)
ÔÚupdate Ò³Ãæ<%= f.select(:service_category,
["Painting","Plumbing","Decor"], {}, {:multiple => true, :size => 3}) %>¾ÍÄÜÈ¡³öÊý¾Ý¿âÖжÔÓ¦µÄÊý¾Ý
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1.install ruby
download from http://www.ruby-lang.org/en/news/2009/12/07/ruby-1-9-1-p376-is-released/
2.install rails
ruby gem install rails --include-dependencies
3.install mysql
download from http://sourceforge.net
ruby gem install&nb ......
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Shoes.app do
#ͼƬ³õʼ»¯
@img = image "http://www.google.cn/intl/zh-CN/images/logo_cn.gif"
#ͼƬ¹ØÓÚÊó±êµÄµ÷ÓÃ
& ......
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ÔÚrobbinËù¸ø³öµÄ½â´ðµ±ÖУ¬¸ü¶àµÄÊDzûÊörailsµÄºÃ´¦£¬È»¶ø´ó¼Ò¶¼ÖªµÀ£¬railsÖ»Ê ......
rubyÖÐ×Ô´øÊµÏÖ¹Û²ìÕßģʽµÄÀàobserver¡£¿ÉÒÔÀûÓÃËüÀ´ÊµÏÖ¹Û²ìÕßģʽ¡£
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# -*- coding: GB2312 -*-
require 'observer'
# ¹Û²ìÕßģʽ(ruby)µÄʹÓÃÀý×Ó
# ±»¹Û²ìÕßP
class PObservable
include Observable
end
# ¹Û²ìÕßA
class AObserver
# update·½·¨ÃûÊDZØÐëµÄÒªÓеÄ
def update(arg)
puts "AO ......
ÕÕÀý¿ÉÒÔÏÈ¿´¶Ë³ÌÐò
class Person
def initialize( name,age=18 )
@name = name
@age = age
@motherland = "China"
end
def talk
puts "my name is "+@name+", age is "+@age.to_s
&n ......