Move navigation search to the secondary navigation

gistfile1.txt

add_action( 'after_setup_theme', function() {
	remove_action( 'generate_inside_navigation', 'generate_navigation_search' );
	remove_action( 'generate_inside_navigation', 'generate_mobile_menu_search_icon' );
	
	add_action( 'generate_inside_secondary_navigation', 'generate_navigation_search' );
	add_action( 'generate_inside_secondary_navigation', 'generate_mobile_menu_search_icon' );
	
	remove_filter( 'wp_nav_menu_items', 'generate_menu_search_icon', 10, 2 );
} );

add_filter( 'wp_nav_menu_items', function( $nav, $args ) {
	$generate_settings = wp_parse_args(
		get_option( 'generate_settings', array() ),
		generate_get_defaults()
	);

	if ( 'enable' !== $generate_settings['nav_search'] ) {
		return $nav;
	}
	
	if ( 'secondary' === $args->theme_location ) {
		$icon = generate_get_svg_icon( 'search', true );
		return $nav . '<li class="search-item" title="' . esc_attr_x( 'Search', 'submit button', 'generatepress' ) . '"><a href="#">' . $icon . '<span class="screen-reader-text">' . _x( 'Search', 'submit button', 'generatepress' ) . '</span></a></li>';
	}

	return $nav;
}, 10, 2 );