如何在 Rails 3 中制作 RSS/Atom 提要? [英] How do I make an RSS/Atom feed in Rails 3?

问题描述

我是 Rails 3 的新手，我正在尝试制作 RSS/Atom 提要.我知道 auto_discovery_link_tag，但是什么是关联的控制器/动作应该是什么样子?

I'm pretty new to Rails 3, and I'm trying to make an RSS/Atom feed. I know about auto_discovery_link_tag, but what is the associated controller/action supposed to look like?

谢谢！

推荐答案

Auto_discovery_link_tag 是一个好的开始.快速谷歌搜索，我找到了关于如何创建的博客文章Rails 中的 RSS 提要.让我告诉您关联的控制器/操作应该是什么样子:

Auto_discovery_link_tag is a good start. A quick Google search and I found blog posts on How to Create an RSS feed in Rails. Let me fill you in on what your associated controller/action is supposed to look like:

controllers/posts_controller.rb

controllers/posts_controller.rb

def feed
    @posts = Post.all(:select => "title, author, id, content, posted_at", :order => "posted_at DESC", :limit => 20) 

    respond_to do |format|
      format.html
      format.rss { render :layout => false } #index.rss.builder
    end
end

此文件的名称应与控制器匹配.见下文:

The name of this file should match the controller. See, below:

views/posts/feed.rss.builder

views/posts/feed.rss.builder

xml.instruct! :xml, :version => "1.0" 
xml.rss :version => "2.0" do
  xml.channel do
    xml.title "Your Blog Title"
    xml.description "A blog about software and chocolate"
    xml.link posts_url

    for post in @posts
      xml.item do
        xml.title post.title
        xml.description post.content
        xml.pubDate post.posted_at.to_s(:rfc822)
        xml.link post_url(post)
        xml.guid post_url(post)
      end
    end
  end
end

这是所有 Railsy 魔法发生的地方.在这里，RSS 提要 XML 被生成并返回到 HTTP.

This is where all the Railsy magic happens. Here, the RSS feed XML is generated and returned to HTTP.

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