Question

Following is the method used to write an entry to xml file

def write_entry(entry)
  node = Nokogiri::XML::Node.new("url", @xml_document)
  node["loc"]= entry[:url]
  node["lastmod"]= entry[:lastmod].to_s
  node["changefreq"] =  entry[:frequency].to_s
  node["priority"] = entry[:priority].to_s
  node.to_xml
end

The entry looks like this:

<urlset>
  <url loc="http:`enter code here`//www.experteer.co.uk/vacaturebank/banen/vacatures/xing-ag" lastmod="2011-11-23 16:58:27 UTC" changefreq="0.8" priority="monthly"/>
</urlset>

I want the entry of xml to be like this

<urlset>
  <url>
    <loc> http://www.experteer.co.uk/vacaturebank/banen/vacatures/xing-ag </loc>
    <lastmod> 2011-11-23 16:58:27 UTC </lastmod>
    <changefreq> 0.8 </changefreq>
    <priority> monthly </priority>
  </url>
 </urlset>

Is it possible with using Node or I have to use Builder?
If possible with Node Then how?
and If I have to use Builder it writes header for each entry how can I handle that it dont write header for each entry.

Answer 1

you can use << or add_child to append children nodes to a node.

def write_entry(entry)
  url = Nokogiri::XML::Node.new( "url" , @xml_document )
  %w{loc lastmod changefreq priority}.each do |node|
    url <<  Nokogiri::XML::Node.new( node, @xml_document ).tap do |n| 
              n.content = entry[ node.to_sym ] 
            end  
  end
  url.to_xml
end

For this to work correctly, you have to change entry[:url] to entry[:loc]. and entry[:frequency] to entry[:changefreq], which shouldn’t be a bad thing (it’s best to have the same name for the same thing everywhere, isn’t it ?).

Alternatively, if your entry hash only contains what you need to convert to xml, use entry.each do |key,value| instead of the array.