rel-in-reply-to

From Microformats Wiki
Revision as of 18:13, 10 April 2013 by Tantek (talk | contribs) (→‎Consumers: display)
Jump to navigation Jump to search

This article is a stub. You can help the microformats.org wiki by expanding it.

rel=in-reply-to is proposed method for linking from a comment to the original post that the comment is a reply to.

Publishers

In a post that is a reply/response/comment to some other original post on the web, the hyperlink from the reply to the original should be marked up with the rel value in-reply-to.

Consumers

WebMention

If your site implements receiving webmentions, implement the WebMention ping verification using rel="in-reply-to" as documented in the WebMention specification.

When your site receives a verified webmention with an "in-reply-to" link, provide a display of the webmention source on your webmention target page, e.g. as suggested in: IndieWebCamp: comment presentation (uses the h-entry at the source page to construct a comment on the target page with author, comment contents, date posted, etc.).

Issues

Replying To Multiple Original Posts

What if a post is a reply/response/comment to multiple other original posts on the web?

  • Example: (need a real world example of a reply to multiple other posts to better understand this problem and its importance)

Should the reply put rel="in-reply-to" on the hyperlinks to all of the other original posts? Or should the reply only use rel="in-reply-to" on the first or most important original post that it's a reply to?


Previous Formats

YouTube uses a URL-qualified version of in-reply-to:

  • rel="http://gdata.youtube.com/schemas/2007#in-reply-to"

in their Atom API, e.g.:

<link rel="http://gdata.youtube.com/schemas/2007#in-reply-to"
  type="application/atom+xml" 
  href="https://gdata.youtube.com/feeds/api/videos/2cd.../comments/978..."/>

Alternatives

Alternatively, or in addition, there is the suggestion to use:

  • class=u-in-reply-to

on hyperlinks from comment posts marked up with h-entry to original posts.

See Also