Relate all the things!

RELATE ALL THE THINGS!mitcho @ WordCamp Birmingham, January 2012 YA RPP!

mitcho (Michael 貴 Erlewine)http://mitcho.com, @themitcho, @yarpp

The solution: suggesting related content toothpastefordinner.com

Yet Another Related Posts Plugin

One of my favorite [plugins] I just activated on my blog is called Yet Another Related Posts Plugin... Ive been blogging seven or eight years now so I have a lot of archives, and it actually surprises me sometimes when I blog about something and I visit the permalink to see Ive written about it before... and it also increases the traﬃc onMatt Mullenweg your blog because when they come in just to one entry, theyll see this other stuﬀ going on.

TODAY1. How does YARPP work?

TODAY1. How does YARPP work?2. Relate all the things!

TODAY1. How does YARPP work?2. Relate all the things!3. No, really—how does YARPP work?

How YARPP works

What’s “related”?CC-BY-NC-ND http://www.flickr.com/photos/twcollins/109069524/

reference entry: VISITOR Taiwan travel tips Nikon D90 review My trip to Greece Writing your own WordPress plugin “THE POOL” 10 Great Eats in Birmingham20 ways to use Path now Fluid dynamics in 10 min My thoughts on Google+ I love my iPhone! Living oﬀ the grid

The criteria: SCORES: • Title keywords* 2.7 • Content body keywords* 3.2 • Tags 1 • Categories 2* a value computed by a MySQL FULLTEXT MATCH of the referenceentries’ top 20 keywords against the pool entries’ full values

The “match score”: WEIGHTS: 1 3 1 0

The “match score”: A weighted sum of the criteria: WEIGHTS: 1 3 1 0

The “match score”: A weighted sum of the criteria: 2.7 × 1 + 2.8 × 3 + 1 x 1 + 2 x 0 = 12.1 WEIGHTS: 1 3 1 0

The “match score”: A weighted sum of the criteria: 2.7 × 1 + 2.8 × 3 + 1 x 1 + 2 x 0 = 12.1 12.1 > 7 (“match threshold”) so related! WEIGHTS: 1 3 1 0

The result:

The result: • A good, organic sense of “relatedness”

The result: • A good, organic sense of “relatedness” • Default settings are pretty good :)

The result: • A good, organic sense of “relatedness” • Default settings are pretty good :) • Sometimes results in less than the speciﬁed number of results

The result: • A good, organic sense of “relatedness” • Default settings are pretty good :) • Sometimes results in less than the speciﬁed number of results • A feature, not a bug

The result: • A good, organic sense of “relatedness” • Default settings are pretty good :) • Sometimes results in less than the speciﬁed number of results • A feature, not a bug • Not symmetric, not transitive

Templates:Uber-customize the related posts displayhttp://phillprice.com http://elliottgoodman.com

Templates:<?php if (have_posts()): ?><h3>Related Photos</h3><ol> <?php while (have_posts()) : the_post(); ?> <?php if (has_post_thumbnail()):?> <li><a href="<?php the_permalink() ?>" rel="bookmark" title="<?php the_title_attribute(); ?>"> <?php the_post_thumbnail(); ?></a></li> <?php endif; ?> <?php endwhile; ?></ol><?php endif; ?>http://mitcho.com/blog/projects/yarpp-3-templates/

RELATE ALL THE THINGS! YA RPP!

RELATE ALL THE THINGS!custom queries and CPT support YA RPP!

Custom queries

Custom queries• YARPP has always had posts and pages

Custom queries• YARPP has always had posts and pages • Options set in one place

Custom queries• YARPP has always had posts and pages • Options set in one place • No way to programmatically override

Custom queries• YARPP has always had posts and pages • Options set in one place • No way to programmatically override• YARPP 3.5 allows one-oﬀ custom displays

Custom queries related_posts();

Custom queries related_posts(array(), $ID, true); ** Some YARPP function signatures are changed in YARPP 3.5 tomake them all uniform. Sorry to break it to you. (Ha!)

Custom queries related_posts(array());

Custom queries related_posts(array()); THE FUN PART

Custom queries related_posts(array( order => post_title ASC ));

Custom queries related_posts(array( order => post_title ASC )); a wp_posts column and ASC or DESC

Custom queries related_posts(array( template => yarpp-template.php ));

Custom queries related_posts(array( template => yarpp-template.php )); a ﬁle in your active theme

Custom queries related_posts(array( weight => array( body => 1, title => 3 ), threshold => 5 ));

Custom queries related_posts(array( weight => array( body => 1, title => 3, tax => array( post_tag => 1 ) ) ));

Custom queries related_posts(array( weight => array( body => 1, title => 3, tax => array( post_tag => 1, category => 2 ) ) ));

Custom queries related_posts(array( weight => array( body => 1, title => 3, tax => array( post_tag => 1, category => 2 ) ) )); your taxonomy here

Custom queries related_posts(array( weight => array(...), require_tax => array( post_tag => 1 ) ));

Custom queries related_posts(array( weight => array(...), require_tax => array( post_tag => 1 ) )); taxonomy # required in common

Custom queries related_posts(array( recent => 3 month ));

Custom queries related_posts(array( exclude => array(32,12,84) ));

Custom queries related_posts(array( exclude => array(32,12,84) )); term_taxonomy_ids

Relate all the things!YARPP 3.5 adds Custom Post Type supportyarpp_related(array( post_type => array(people,animals)));

YA RPP!

POP QUIZ! YA RPP!

yarpp_related(array( post_type => array(movies), weight => array( title => 1, tax => array( actor => 1 ) )));

yarpp_related(array( post_type => array(movies), weight => array( title => 1, tax => array( actor => 1 ) ) ));related movies considering titles and actors

yarpp_related(array( post_type => array(book), recent => 1 year, weight => array( title => 1, tax => array( author => 1 ) )));

yarpp_related(array( post_type => array(book), recent => 1 year, weight => array( title => 1, tax => array( author => 1 ) ) ));related books considering titles and authors and published in the past year

yarpp_related(array( post_type => array(toy), require_tax => array( age_range => 1 )));

yarpp_related(array( post_type => array(toy), require_tax => array( age_range => 1 ))); related toys with at least one age range in common

As you like it

As you like it• yarpp_related_exist() returns boolean

As you like it• yarpp_related_exist() returns boolean• yarpp_get_related() returns array of objects

As you like it• yarpp_related_exist() returns boolean• yarpp_get_related() returns array of objects • just like WP’s get_posts()

Caveat:• Custom queries with related_posts() or yarpp_related() aren’t cached in YARPP’s internal cache• If you use them a lot, cache the results yourself (which is another talk...)

Do the mathSELECT 4024 as reference_ID, ID, ROUND(0 + (MATCH (post_content) AGAINST (carved panorama great ones lantern including chomsky photos richards share flickr jack norvin stata pumpkins couple team firefox halloween )) * 1 + (MATCH (post_title) AGAINST (halloween happy )) * 1 + count(distinct if( terms.term_taxonomy_id in (598,447), terms.term_taxonomy_id, null )) * 1 + count(distinct if( terms.term_taxonomy_id in (649,47,808,861,824), terms.term_taxonomy_id, null )) * 1,1) as scorefrom wp_posts left join wp_term_relationships as terms on ( terms.object_id = wp_posts.ID )where post_status in ( publish, static ) and ID != 4024 and post_date <= 2010-10-29 16:22:51 and post_password = and post_type = postgroup by IDhaving score >= 5.00 and bit_or(terms.term_taxonomy_id in (601)) = 0order by score desc limit 5

Do the mathSELECT 4024 as reference_ID, ID, the score formula ROUND(0 + (MATCH (post_content) AGAINST (carved panorama great ones lantern including chomsky photos richards share flickr jack norvin stata pumpkins couple team firefox halloween )) * 1 + (MATCH (post_title) AGAINST (halloween happy )) * 1 + count(distinct if( terms.term_taxonomy_id in (598,447), terms.term_taxonomy_id, null )) * 1 + count(distinct if( terms.term_taxonomy_id in (649,47,808,861,824), terms.term_taxonomy_id, null )) * 1,1) as scorefrom wp_posts left join wp_term_relationships as terms on ( terms.object_id = wp_posts.ID )where post_status in ( publish, static ) and ID != 4024 and post_date <= 2010-10-29 16:22:51 and post_password = and post_type = postgroup by IDhaving score >= 5.00 and bit_or(terms.term_taxonomy_id in (601)) = 0order by score desc limit 5

Do the mathSELECT 4024 as reference_ID, ID, ROUND(0 + (MATCH (post_content) AGAINST (carved panorama great ones lantern including chomsky photos richards share flickr jack norvin stata pumpkins couple team firefox halloween )) * 1 + (MATCH (post_title) AGAINST (halloween happy )) * 1 + count(distinct if( terms.term_taxonomy_id in (598,447), terms.term_taxonomy_id, null )) * 1 + count(distinct if( terms.term_taxonomy_id in (649,47,808,861,824), terms.term_taxonomy_id, null )) * 1,1) as scorefrom wp_posts left join wp_term_relationships as terms on ( terms.object_id = table join wp_posts.ID )where post_status in ( publish, static ) and ID != 4024 and post_date <= 2010-10-29 16:22:51 and post_password = and post_type = postgroup by ID in YARPP 3.5,having score >= 5.00 and bit_or(terms.term_taxonomy_id in (601)) = 0 just two tables!order by score desc limit 5

I got cache. Mega cache.

I got cache. Mega cache.• The ﬁrst time, compute and cache

I got cache. Mega cache.• The ﬁrst time, compute and cache• Internally, three cache engines built-in:

I got cache. Mega cache.• The ﬁrst time, compute and cache• Internally, three cache engines built-in: • YARPP_Cache_Tables

I got cache. Mega cache.• The ﬁrst time, compute and cache• Internally, three cache engines built-in: • YARPP_Cache_Tables • YARPP_Cache_Postmeta

I got cache. Mega cache.• The ﬁrst time, compute and cache• Internally, three cache engines built-in: • YARPP_Cache_Tables • YARPP_Cache_Postmeta • define(YARPP_CACHE_TYPE,postmeta);

I got cache. Mega cache.• The ﬁrst time, compute and cache• Internally, three cache engines built-in: • YARPP_Cache_Tables • YARPP_Cache_Postmeta • define(YARPP_CACHE_TYPE,postmeta); • YARPP_Cache_Bypass

I got cache. Mega cache.• The ﬁrst time, compute and cache• Internally, three cache engines built-in: • YARPP_Cache_Tables • YARPP_Cache_Postmeta • define(YARPP_CACHE_TYPE,postmeta); • YARPP_Cache_Bypass • Used in custom queries

query_posts(’p=4024’) //=>SELECT wp_posts.*FROM wp_postsWHERE 1=1 AND wp_posts.ID = 4024 AND wp_posts.post_type = postORDER BY wp_posts.post_date DESC

query_posts w/table cache SELECT wp_posts.*, yarpp.score FROM wp_posts JOIN wp_yarpp_related_cache AS yarpp ON wp_posts.ID = yarpp.ID WHERE 1=1 AND yarpp.reference_ID = 4024 AND wp_posts.post_type IN (post) ORDER BY yarpp.score DESC LIMIT 5http://mitcho.com/blog/how-to/external-orders-in-wordpress-queries/

query_posts w/list of IDsSELECT wp_posts.*, CASE wp_posts.ID WHEN 43 THEN 23.0 WHEN 1413 THEN 20.5 WHEN 3448 THEN 19.7 WHEN 85 THEN 19.6 WHEN 2203 THEN 19.0 END as scoreFROM wp_postsWHERE 1=1 AND wp_posts.ID in (43,1413,3448,85,2203) AND wp_posts.post_type IN (post)ORDER BY score DESCLIMIT 5

YARPP 3.5 COMING SOON TO AWORDPRESS NEAR YOU Download 3.5b4:http://tinyurl.com/yarppversions

Thank you!slides on http://slideshare.net/mitcho@themitcho, @yarpp

http://birminghamblogging.com	1232
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Relate all the things!

by Michael Yoshitaka Erlewine

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