Get urls of a page's culture versions in Kentico

For SEO reasons you may need to generate alternate link tags with the hreflang attribute in your html output. In this quick tip I will show you a macro expression which generates these links for you in Kentico.

The macro simply goes through culture versions of the current page but for many people it is not obvious how to achieve that. Before you use the macro make sure you place following key into your web.config: <add key="CMSCheckPermissionsForDocumentCollection" value="false"/>. The reason for this is that developers of Kentico do not want to allow public user see documents collections via macro. This kind of security checks was present only in certain number of hotfixes in version 7 and 8. For more info go here: http://devnet.kentico.com/articles/page-macro-expressions-security

{% foreach (page in CurrentDocument.CultureVersions) {
  if (page.DocumentCulture != CurrentDocument.DocumentCulture) {
    "<link rel=\"alternate\" href=\""+ page.AbsoluteUrl + "\" hreflang=\""+ page.DocumentCulture +"\" />"
  }
}
#%}