方法A:
就是你自己把RSS XML的格式拼湊好,輸出.并設(shè)置HTTP Header ，標(biāo)記content-type為application/XML,常見(jiàn)的代碼:

復(fù)制代碼 代碼如下:

#Post_controller::feed()
def feed
require "rss"
articles = Article.find :all, :order => 'post_date DESC', :limit => 10
feed = RSS::Maker.make("2.0") do |maker|
maker.channel.title = "Gang of Technology"
maker.channel.description = "Gang of Technology site"
maker.channel.link = "http://up-u.com"

maker.items.do_sort = true

articles.each do |article|
item = maker.items.new_item
item.link = "http://www.***.com/archives/#{article.id}"
item.title = article.title
item.date = article.post_date
item.description = ""
end
end
send_data feed.to_s, :type => "application/rss+xml", :disposition =>
'inline'
end

復(fù)制代碼 代碼如下:

#Post_controller::feed
def feed
@posts=Post.find :all,:limit=>”id desc”
end

erb模板:

xml.instruct!
xml.rss(”version”=>”2.0″,
“xmlns:dc”=>””) do
xml.channel do
xml.title “renlu.xu 's blog”
xml.link(url_for(:action=>”start”,:only_path=>false))
xml.description “My life My love”
xml.language “zh_CN”
xml.ttl 60

for event in @posts do
xml.item do
xml.title(event.title)
xml.description(event.body)
xml.pubDate(event.created_at.to_s(:rfc822))
xml.guid(event.id)
xml.link(”…..#{event.id}”)
end
end
end
end