[buddypress-trac] [BuddyPress Trac] #3961: Hierarchical groups

[buddypress-trac]

#3961: Hierarchical groups
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 Reporter:  sooskriszta             |       Owner:  dcavins
     Type:  enhancement             |      Status:  assigned
 Priority:  normal                  |   Milestone:  2.7
Component:  Groups                  |     Version:
 Severity:  normal                  |  Resolution:
 Keywords:  dev-feedback has-patch  |
------------------------------------+-----------------------

Comment (by dcavins):

 I think @r-a-y's invalidation scheme makes sense and wouldn't be costly.
 If we must do it at upgrade, the simplest code is probably:

 {{{#!php
 <?php
 function bp_update_to_2_7() {
         bp_add_option( 'bp-emails-unsubscribe-salt', base64_encode(
 wp_generate_password( 64, true, true ) ) );
         /*
          * Also handled by `bp_core_install()`.
          * Add `parent_id` column to groups table.
          */
         if ( bp_is_active( 'groups' ) ) {
                 bp_core_install_groups();

                 // Invalidate all cached group objects.
                 global $wpdb;
                 $bp = buddypress();

                 $group_ids = $wpdb->get_column( "SELECT id FROM
 {$bp->groups->table_name}" );
                 foreach ( $group_ids as $group_id ) {
                         wp_cache_delete( $group_id, 'bp_groups' );
                 }
         }
 }
 }}}

 which seems pretty straightforward, but I don't know how efficient
 `wp_cache_delete()` is. @r-a-y or @boonebgorges probably know something
 about it. :)

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Ticket URL: <https://buddypress.trac.wordpress.org/ticket/3961#comment:49>
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