Any problems with WP 4.6?

I may have reacted too quickly!

I’ve tried two other sites and I could update to 4.6 with no problem.

The problem site is anomalous… The WordPress 4.6 update may trigger some conflict with another plugin… It is a site with the co-author plugin. I’ll report back once I figure it out…

I’m sorry to hear you’re having issues!

Can you try using the category slug (probably presentations) rather than the category name? Also remove the trailing space at the end (change "div" ] to "div"] ).

Hi Bill,
Thanks for those suggestions… I should have had those in! But, alas, no joy to my problem.

I’ve been able to play around a little…

This works
WP 4.5.3, Display Posts Shortcode 2.7.0, Co-Authors Plus 3.21

This works
WP 4.6, Display Posts Shortcode 2.7.0

This does NOT work
WP 4.6, Display Posts Shortcode 2.7.0, Co-Authors Plus 3.21

So it appears that upgrading to WP 4.6 starts an incompatibility…

Hoping that info helps!

@kendawes

So how are you using Co-Authors Plus plugin on the site?

I’m using it to add authors (users) to a post.
I’m not using the “Guest Author” feature.

I just tested Co Authors Plus after upgrading to WordPress 4.6. You’re right, this is an issue with CoAuthors Plus.

I got the following error when doing the query:

WordPress database error: [Not unique table/alias: ‘wp_term_relationships’]
SELECT SQL_CALC_FOUND_ROWS wp_posts.ID FROM wp_posts LEFT JOIN wp_term_relationships ON (wp_posts.ID = wp_term_relationships.object_id) LEFT JOIN wp_term_relationships ON (wp_posts.ID = wp_term_relationships.object_id) LEFT JOIN wp_term_taxonomy ON ( wp_term_relationships.term_taxonomy_id = wp_term_taxonomy.term_taxonomy_id ) WHERE 1=1 AND ( wp_term_relationships.term_taxonomy_id IN (1) ) AND ((wp_posts.post_author = 1 OR (wp_term_taxonomy.taxonomy = ‘author’ AND wp_term_taxonomy.term_id = ‘5’))) AND wp_posts.post_type = ‘post’ AND ((wp_posts.post_status = ‘publish’)) GROUP BY wp_posts.ID HAVING MAX( IF ( wp_term_taxonomy.taxonomy = ‘author’, IF ( wp_term_taxonomy.term_id = ‘5’,2,1 ),0 ) ) <> 1 ORDER BY wp_posts.post_date DESC LIMIT 0, 1

The issue is that CoAuthors Plus uses a custom taxonomy called ‘author’ for assigning multiple authors to a post. If you queried by just author or just category the shortcode still works. But when you query for both, CoAuthors Plus is not properly accounting for the two separate taxonomies (‘author’ and ‘category’).

This isn’t an issue in Display Posts Shortcode. If you do a standard WordPress query you get the same issue: https://gist.github.com/billerickson/c2422064a108e777dd15fa44dfd60306

I’m going to see if I can reach out to the author of CoAuthors Plus.

(By the way, once this is worked out you might want to use the CoAuthors Plus Addon to show all the authors in a shortcode).

Hi Bill,
Thank you for the thorough examination! I look forward to CoAuthors’ response.

I’ll check out your CoAuthors Plus Addon. To do what I wanted, I’ve been using your “Add Author to Display Posts Shortcode plugin” that I modified to work with CoAuthors Plus and your “Post Authors Post Link Shortcode” as mu-plugins…
Looks like I’ll be able to make those go away and just use the “Addon”.

Thanks so much for all your hard work!