如何將rss feed鏈接到url

Question

我使用Ruby的RSS類在Sinatra應用程序中生成RSS源。該Feed對每個用戶都是唯一的。如何將Feed連接到URL以便用戶可以使用其RSS閱讀器進行訂閱，並自動接收新的Feed更新？

Answer 1

無恥地從http://recipes.sinatrarb.com/p/views/rss_feed_with_builder

被盜安裝或添加Builder寶石：

# add to Gemfile and run `bundle`... 
gem 'builder' 

# ... or install system-wide 
$ gem install builder 

添加合適的路由（S）到您的應用程序/控制器：

# in app.rb 
get '/rss' do 
    @posts = # ... find posts 
    builder :rss 
end 

創建視圖顯示RSS種子：

# in views/rss.builder 
xml.instruct! :xml, :version => '1.0' 
xml.rss :version => "2.0" do 
    xml.channel do 
    xml.title "Cool Website News" 
    xml.description "The latest news from the coolest website on the net!" 
    xml.link "http://my-cool-website-dot.com" 

    @posts.each do |post| 
     xml.item do 
     xml.title post.title 
     xml.link "http://my-cool-website-dot.com/posts/#{post.id}" 
     xml.description post.body 
     xml.pubDate Time.parse(post.created_at.to_s).rfc822() 
     xml.guid "http://my-cool-website-dot.com/posts/#{post.id}" 
     end 
    end 
    end 
end 

進一步閱讀：

• Sinatra Recipies: RSS Feed with Builder
• Sinatra Book: RSS Feeds
• NetTuts: Singing With Sinatra (RSS)