[buddypress-trac] [BuddyPress Trac] #6567: Cache issue on bp directory pages with multisite installtion

[buddypress-trac]

#6567: Cache issue on bp directory pages with multisite installtion
------------------------------+-----------------------------
 Reporter:  mhawksey          |      Owner:
     Type:  defect (bug)      |     Status:  new
 Priority:  normal            |  Milestone:  Awaiting Review
Component:  Component - Core  |    Version:  2.3.2
 Severity:  normal            |   Keywords:
------------------------------+-----------------------------
 In a multisite installation with object cache
 `bp_core_get_directory_pages()` returns incorrect directory pages as
 `wp_cache_get()` are not site isolated. From bp-core-functions.php:

 {{{
 // Look in cache first
 $pages = wp_cache_get( 'directory_pages', 'bp' );
 }}}


 This results in errors on BP component pages:

 >Warning: in_array() expects parameter 2 to be array, null given in ...
 /plugins/buddypress/bp-core/bp-core-filters.php on line 192

 A similar issue was discussed in #5733 but the fix does not extend to
 `bp_core_get_directory_pages()` or other 'bp' grouped caches.

 We’ve fixed our own install with:
 {{{
 add_filter('bp_core_get_directory_pages',
 'bp_core_get_directory_pages_cache_mod');
 }}}

 which suffixes the cache group with the root blog id. My concern is that
 this is not the only cache call. For further info we are using BP Multi
 Network plugin for the multisite installation.

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Ticket URL: <https://buddypress.trac.wordpress.org/ticket/6567>
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