的Rails 3 RSS供稿帮助XML解析错误

Question

我得到鉴于这种XML错误：

XML parse error: no element found 
Location: http://localhost:3000/feed 
Line 1, column 2: 

我route.rb

match '/feed' => 'konkurrancers#feed', 
     :as => :feed, 
     :defaults => { :format => 'xml' } 

我的控制器：

def feed 
@posts = Konkurrancer.all(:select => "name, tracking, id, created_at", :order => "created_at DESC", :limit => 20) 
    respond_to do |format| 
     format.html 
     format.rss { render :layout => false } #index.rss.builder 
    end 

我的指数。 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" 

    for konkurrancer in @posts 
     xml.item do 
     xml.title konkurrancer.name 
     xml.pubDate konkurrancer.posted_at.to_s(:rfc822) 
     xml.link konkurrancer.tracking 
     xml.guid konkurrancer.tracking 
     end 
    end 
    end 
end 

end 

Answer 1

这不是xml，它是rss：

match '/feed' => 'konkurrancers#feed', 
     :as => :feed, 
     :defaults => { :format => 'rss' }