BP_XProfile_Group::save()

	public function save() {
		global $wpdb;

		// Filter the field group attributes.
		$this->name        = apply_filters( 'xprofile_group_name_before_save',        $this->name,        $this->id );
		$this->description = apply_filters( 'xprofile_group_description_before_save', $this->description, $this->id );

		/**
		 * Fires before the current group instance gets saved.
		 *
		 * Please use this hook to filter the properties above. Each part will be passed in.
		 *
		 * @since BuddyPress 1.0.0
		 *
		 * @param BP_XProfile_Group $this Current instance of the group being saved. Passed by reference.
		 */
		do_action_ref_array( 'xprofile_group_before_save', array( &$this ) );

		$bp = buddypress();

		// Update or insert.
		if ( ! empty( $this->id ) ) {
			$sql = $wpdb->prepare( "UPDATE {$bp->profile->table_name_groups} SET name = %s, description = %s WHERE id = %d", $this->name, $this->description, $this->id );
		} else {
			$sql = $wpdb->prepare( "INSERT INTO {$bp->profile->table_name_groups} (name, description, can_delete) VALUES (%s, %s, 1)", $this->name, $this->description );
		}

		// Attempt to insert or update.
		$query = $wpdb->query( $sql );

		// Bail if query fails. If `$query` is 0, it means the save was successful, but no fields were updated.
		if ( false === $query || is_wp_error( $query ) ) {
			return false;
		}

		// If not set, update the ID in the group object.
		if ( empty( $this->id ) ) {
			$this->id = $wpdb->insert_id;
		}

        // Save metadata
        $repeater_enabled = isset( $_POST['group_is_repeater'] ) && 'on' == $_POST['group_is_repeater'] ? 'on' : 'off';
        self::update_group_meta( $this->id, 'is_repeater_enabled', $repeater_enabled );

		/**
		 * Fires after the current group instance gets saved.
		 *
		 * @since BuddyPress 1.0.0
		 *
		 * @param BP_XProfile_Group $this Current instance of the group being saved. Passed by reference.
		 */
		do_action_ref_array( 'xprofile_group_after_save', array( &$this ) );

		return $this->id;
	}