Ticket #1332: bp_xprofile_cache_controller.php

<?php

/**
 * Clear the xprofile_group cache when a new field is created, or when an existing field is deleted
 *
 * See: http://trac.buddypress.org/ticket/1332
 */
function nm_xprofile_clear_profile_group_cache($field) {
        $group_obj = (object) array( 'id' => $field->group_id );
        xprofile_clear_profile_groups_object_cache( $group_obj );
        wp_cache_delete( 'xprofile_group_' . $field->group_id, 'bp' );
}
add_action('xprofile_fields_saved_field', 'nm_xprofile_clear_profile_group_cache', 10, 1);
add_action('xprofile_fields_deleted_field', 'nm_xprofile_clear_profile_group_cache', 10, 1);

/**
 * Check the profile data cache is correct for a user, update it when necessary
 *
 * See: http://trac.buddypress.org/ticket/1332
 */
function nm_xprofile_group_fields($fields, $group_id) {
        global $bp, $profile_template;
        
        if ( is_a($profile_template, 'BP_XProfile_Data_Template') && isset($profile_template->group) ) {
                
                // Is there a difference?
                $diff = array_udiff($profile_template->group->fields, $fields, 'nm_profile_cache_diff');
                
                if ( ! empty($diff) ) {
                
                        // The cached profile data is out-of-date, so replace it, and return the correct data
                        // The fields defined by $profile_template->group->fields should be correct
                        
                        $fields = array();
                        
                        // Don't try and fetch any existing profile data if we are using this loop on the registration page
                        $get_data = ( !bp_is_register_page() ) ? true : false;
                        
                        // Update the cache for the displayed user
                        $user_id = $bp->displayed_user->id;
                        
                        for ( $i = 0; $i < count($profile_template->group->fields); $i++ ) {
                
                                $field = new BP_XProfile_Field( $profile_template->group->fields[$i]->id, $user_id, $get_data );
                                $fields[$i] = $field;
                
                        }
                
                        wp_cache_replace( 'xprofile_fields_' . $group_id . '_' . $user_id, $fields, 'bp' );
                
                }
        
        }
        
        return $fields;
}
add_filter('xprofile_group_fields', 'nm_xprofile_group_fields', 10, 2);

        /**
         * Calculates the diff between the profile field cache and the profile data cache
         * used by nm_xprofile_group_fields to determine whether we should update the
         * profile data cache
         */
        function nm_profile_cache_diff($a, $b) {
                $a = (object)$a;
                $b = (object)$b;
                if ($a->id == $b->id && $a->type == $b->type) {
                        return 0;
                } elseif ($a->id > $b->id || $a->type > $b->type) {
                        return 1;
                } else {
                        return -1;
                }
        }
        
/**
 * Expire the profile data cache for a user after the profile is updated
 *
 * See: http://trac.buddypress.org/ticket/1332
 */
function nm_xprofile_data_after_save(&$profile_data) {
        global $bp, $wpdb;
        $sql = $wpdb->prepare("SELECT group_id FROM `{$bp->profile->table_name_fields}` WHERE id = %d", $profile_data->field_id);
        $group_id = $wpdb->get_var($sql);
        // Expire the cache
        wp_cache_delete( 'xprofile_fields_' . $group_id . '_' . $profile_data->user_id, 'bp' );
        return true;
}
add_action('xprofile_data_after_save', 'nm_xprofile_data_after_save');

?>