Discussion Forum Schema improvements

[techAPJ (Arpit Jalan)]

@rrit

Do not include the data/text of the first post on subsequent pages, but always add itemprop="url" pointing to the first page:

Yes, we’re doing that now per the recent commit but even after adding that we’re missing some required fields (author, datePublished, text) for subsequent pages (?page=2).

@rrit

This whole link-tag should only be defined for post.is_first_post - no need to repeat it with the identical url for each Comment-item.

On meta.discourse.org the quotation marks are mangled right now:
<link itemprop=&#39;mainEntityOfPage&#39; href="…">
See Schema Markup Validator

Great catch! Fixed in this PR:

https://github.com/discourse/discourse/pull/25082

@rrit

Unlike our general structured data preference, we recommend providing the DiscussionForumPosting markup in Microdata (or RDFa) if possible. This prevents you from needing to duplicate large text blocks inside markup. However, this is just a recommendation, and JSON-LD is still fully supported.

Oh yeah. This was also confirmed by @rrlevering here:

@rrlevering

Oh, and please don’t switch to JSON-LD. Honestly that’s preferred for text heavy markup like forums. Having to duplicate the textual contents is silly. It’s just easier to author which is why we’ve been pushing it.

So I guess we’ll have to improve microdata schema while making sure we do not end up duplicating content on subsequent pages.