Multisite: Introduce metadata for sites.

A new global multisite table `wp_blogmeta` is added to the database schema, and a set of `*_site_meta()` API functions are introduced.

The implementation fails gracefully when the new table is not yet available, which may happen especially shortly after the core update, before the network has been upgraded to the new database schema. The presence of the table is detected once and stored as a global setting on the main network.

Core does not yet use site metadata, but there are several use-cases to be implemented or explored in the near future, and it allows plugins to extend sites with arbitrary data, which will come in particularly handy with the upcoming REST API endpoint for sites.

Props spacedmonkey, johnjamesjacoby, jeremyfelt, flixos90.
Fixes #37923.


git-svn-id: https://develop.svn.wordpress.org/trunk@42836 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Felix Arntz
2018-03-16 02:14:04 +00:00
parent 7c0cf670bc
commit 8e4bd924d2
11 changed files with 589 additions and 84 deletions

View File

@@ -328,7 +328,7 @@ class WP_UnitTestCase extends PHPUnit_Framework_TestCase {
$wp_object_cache->__remoteset();
}
wp_cache_flush();
wp_cache_add_global_groups( array( 'users', 'userlogins', 'usermeta', 'user_meta', 'useremail', 'userslugs', 'site-transient', 'site-options', 'blog-lookup', 'blog-details', 'rss', 'global-posts', 'blog-id-cache', 'networks', 'sites', 'site-details' ) );
wp_cache_add_global_groups( array( 'users', 'userlogins', 'usermeta', 'user_meta', 'useremail', 'userslugs', 'site-transient', 'site-options', 'blog-lookup', 'blog-details', 'rss', 'global-posts', 'blog-id-cache', 'networks', 'sites', 'site-details', 'blog_meta' ) );
wp_cache_add_non_persistent_groups( array( 'comment', 'counts', 'plugins' ) );
}