Add functions to display adjacent relational links in the head

[sivel]

Add functions to display relational links for adjacent posts in the head.

Example:

<link rel="prev" href="​http://example.org/2008/11/my-previous-post" title="My Previous Post" />
<link rel="next" href="​http://example.org/2008/12/my-next-post" title="My Next Post" />

[sivel]

Would anyone like to comment on the changes proposed in this ticket? Anyone think this is a good idea to add?

[westi]

See also #4209.

Sounds like a good idea.

How about a patch for default / classic to make use of these for single pages :-)

[DD32]

What about something for attachments too? But back/forth between the attachments of that post?

[sivel]

I'll work on both of these items. I'm not as familiar with the attachments though. I'm sure by now the patch needs updated anyway to fit into trunk.

[sivel]

Updated patch to fit into trunk and added the new functionality to the default and classic themes.

[westi]

Ok.

I think it may be better to use the wp_head action rather than hardcode in the themes.

That way all themes get this functionality.

Implement it the same way as rsd_link and wlwmanifest_link.

[jidanni]

#9131 has been marked as a duplicate of this bug.

(Why can't TRAC say that automatically here, like Bugzilla?)

[sivel]

Replying to jidanni:

#9131 has been marked as a duplicate of this bug.

(Why can't TRAC say that automatically here, like Bugzilla?)

I have made note of the additional rel values and plan on adding them to this patch. Little busy at the moment so I'll start working on this again soon.

[sivel]

Support for the following link types:

index
start
prev
next

Hooking into wp_head to display these links. Still looking into adding 'toc' which points to the archive, and 'up' which points to a parent.

[sivel]

add top and patch against current trunk rev

[sivel]

should have been up and not top

[sivel]

new patch (8703.5.diff) which includes 'up'. I have decided to not include 'toc' for the time being.

[sivel]

From my conversation with westi, I have replaced the SQL in get_boundary_post with get_posts. New patch is 8703.6.diff

[westi]

(In [10815]) Add relational links to next/prev/parent posts. See #8703 props sivel.

[Viper007Bond]

Properly escape titles (namely HTML) and spaces are bad (replace them with tabs)

[sivel]

Ah...apologies for the spaces. The tabs must have been converted to spaces during my last copy/paste.

[ryan]

(In [11062]) Formatting cleanups. Props Viper007Bond. fixes #8703