Term Meta WordCamp Paris 2016

This presentation tells the story of the new Term Meta feature in WordPress 4.4, and provides a view of the human and technical story behind this new feature.

Transcript

1. term meta Matt Perry /// @mattoperry
2. what’s new
3. what’s new how it works
4. what’s new how it works a cool story
5. meta data
6. post, user, comment
7. post, user, comment term
8. post, user, comment term a single tag, category or member of a custom taxonomy
9. June 13, 2009
10. sirzooro (Daniel) https://core.trac.wordpress.org/ticket/10142
11. plugin developers had to develop their own method of storing data [for taxonomy terms] … it would be good to add new functions for this.
13. February 10, 2008
14. rmccue (Ryan) https://core.trac.wordpress.org/ticket/5809
15. 1. create a category called Testing 2. create a tag called Testing 3. Rename the Testing category to “Another Test” 4. check the name of the tag
16. 08 09 10 11 12 13 14 15 16
17. 08 09 10 11 12 13 14 15 16 4.2 4.4
18. Why so long?
19. deep problem upgrade path backward compatibility
20. wp_users wp_comments wp_posts wp_usermeta wp_commentmeta wp_postmeta < 4.2
21. wp_users wp_comments wp_posts wp_usermeta wp_commentmeta wp_postmeta wp_terms wp_term_taxonomy < 4.2 wp_term_relationships
22. wp_terms wp_term_taxonomy < 4.2 wp_term_relationships
23. wp_terms wp_term_taxonomy < 4.2 wp_term_relationships what unique terms exist? term slugs unique
24. wp_terms wp_term_taxonomy < 4.2 wp_term_relationships what unique terms exist? term slugs unique what terms are in what taxonomies?
25. wp_terms wp_term_taxonomy < 4.2 wp_term_relationships what unique terms exist? term slugs unique what terms are in what taxonomies? what taxonomy terms are associated with which posts
26. wp_terms wp_term_taxonomy < 4.2 wp_term_relationships what unique terms exist? term slugs unique what terms are in what taxonomies? what taxonomy terms are associated with which posts
27. < 4.2
28. wp_terms wp_term_taxonomy < 4.2 wp_term_relationships
29. wp_terms wp_term_taxonomy < 4.2 wp_term_relationships
30. wp_terms wp_term_taxonomy < 4.2 wp_term_relationships
31. wp_terms wp_term_taxonomy < 4.2 wp_term_relationships
32. shared terms
33. July, 2013
34. Nacin https://make.wordpress.org/core/2013/07/28/ potential-roadmap-for-taxonomy-meta-and-post- relationships/
35. Nacin Boone https://make.wordpress.org/core/2013/07/28/ potential-roadmap-for-taxonomy-meta-and-post- relationships/ https://make.wordpress.org/core/2015/09/04/ taxonomy-term-metadata-proposal/
36. The Plan • Stop making things worse (don’t make any new shared terms) • Start to fix shared terms on update • Split all remaining shared terms, establishing a one-to- one correspondence between rows in wp_terms and wp_term_taxonomy • introduce term_meta • combine wp_terms and wp_taxonomy_terms tables
37. The Plan • Stop making things worse (don’t make any new shared terms) [4.1] • Start to fix shared terms on update • Split all remaining shared terms, establishing a one-to- one correspondence between rows in wp_terms and wp_term_taxonomy • introduce term_meta • combine wp_terms and wp_taxonomy_terms tables
38. The Plan • Stop making things worse (don’t make any new shared terms) [4.1] • Start to fix shared terms on update [4.2] • Split all remaining shared terms, establishing a one-to- one correspondence between rows in wp_terms and wp_term_taxonomy • introduce term_meta • combine wp_terms and wp_taxonomy_terms tables
39. The Plan • Stop making things worse (don’t make any new shared terms) [4.1] • Start to fix shared terms on update [4.2] • Split all remaining shared terms, establishing a one-to- one correspondence between rows in wp_terms and wp_term_taxonomy [4.3] • introduce term_meta • combine wp_terms and wp_taxonomy_terms tables
40. The Plan • Stop making things worse (don’t make any new shared terms) [4.1] • Start to fix shared terms on update [4.2] • Split all remaining shared terms, establishing a one-to- one correspondence between rows in wp_terms and wp_term_taxonomy [4.3] • introduce term_meta [4.4] • combine wp_terms and wp_taxonomy_terms tables
41. The Plan • Stop making things worse (don’t make any new shared terms) [4.1] • Start to fix shared terms on update [4.2] • Split all remaining shared terms, establishing a one-to- one correspondence between rows in wp_terms and wp_term_taxonomy [4.3] • introduce term_meta [4.4] • combine wp_terms and wp_taxonomy_terms tables [?]
42. wp_terms wp_term_taxonomy 4.4 wp_term_relationships wp_term_meta
43. • add_term_meta, update_term_meta, get_term_meta, delete_term_meta • same underlying API (ie: get_metadata) • meta_query argument for get_terms • cache priming for functions that fetch terms (can be turned off via a filter)
44. Applications
49. https://www.smashingmagazine.com/2015/12/ how-to-use-term-meta-data-in-wordpress/ Thomas Maier http://themehybrid.com/weblog/introduction-to- wordpress-term-meta Justin Tadlock
50. @todo combine wp_terms and wp_taxonomy_terms
51. wp_terms wp_term_taxonomy SOME_NEW_TABLE
60. make.wordpress.org
61. merci Matt Perry /// @mattoperry