BP_XProfile_Field_Type_Datebox::admin_save_settings( int $field_id, array $settings )

	public function admin_save_settings( $field_id, $settings ) {
		$existing_settings = self::get_field_settings( $field_id );

		$saved_settings = array();
		foreach ( array_keys( $existing_settings ) as $setting ) {
			switch ( $setting ) {
				case 'range_relative_start' :
				case 'range_relative_end' :
					$op_key = $setting . '_type';
					if ( isset( $settings[ $op_key ] ) && 'past' === $settings[ $op_key ] ) {
						$value = 0 - intval( $settings[ $setting ] );
					} else {
						$value = intval( $settings[ $setting ] );
					}

					$saved_settings[ $setting ] = $value;
				break;

				default :
					if ( isset( $settings[ $setting ] ) ) {
						$saved_settings[ $setting ] = $settings[ $setting ];
					}
				break;
			}
		}

		// Sanitize and validate saved settings.
		$saved_settings = self::validate_settings( $saved_settings );

		foreach ( $saved_settings as $setting_key => $setting_value ) {
			bp_xprofile_update_meta( $field_id, 'field', $setting_key, $setting_value );
		}

		return true;
	}