Xml special characters

Rails
1

Hello,

I need to produce XML that looks like this

  <item>
      <title>Image Title</title>
      <media:description>Description of my Image</media:description>
      <media:content url="http://www.mywebsite.com/image.jpg" />
      <media:thumbnail

url=“http://www.mywebsite.com/image_thumb.jpg” />

but rails doesn’t seem to like the “:” in the following code

for photo in @photos
  xml.item do
    xml.pubDate photo.created_at.rfc822
    xml.title h(photo.profile.name)
    xml.link photo.photo_url
    xml.guid photo.photo_url
    xml.description h(photo.profile.name)
    xml.content photo.photo_url
    xml.thumbnail photo.photo_url
  end

Any way to escape it?

GP