Shoestrap 3 - Search form in Secondary Navbar

functions.php

<?php
add_action( 'shoestrap_pre_wrap', 'custom_secondary_navbar', 1 );
function custom_secondary_navbar() {
	global $ss_settings, $ss_framework, $ss_menus;

	if ( has_nav_menu( 'secondary_navigation' ) ) : ?>

		<?php echo $ss_framework->open_container( 'div' ); ?>
			<header class="secondary navbar navbar-default <?php echo $ss_menus->navbar_class( 'secondary' ); ?>" role="banner">
				<button data-target=".nav-secondary" data-toggle="collapse" type="button" class="navbar-toggle">
					<span class="icon-bar"></span>
					<span class="icon-bar"></span>
					<span class="icon-bar"></span>
				</button>
				<?php
				if ( $ss_settings['navbar_secondary_social'] != 0 ) {
					SS_Framework_Bootstrap::navbar_social_links();
				} ?>
				<nav class="nav-secondary navbar-collapse collapse" role="navigation">
					<?php do_action( 'custom_inside_secondary_nav_start' ); ?>
					<?php wp_nav_menu( array( 'theme_location' => 'secondary_navigation', 'menu_class' => apply_filters( 'shoestrap_nav_class', 'navbar-nav nav' ) ) ); ?>
				</nav>
			</header>
		<?php echo $ss_framework->close_container( 'div' ); ?>

	<?php endif;
}

function custom_searchform_secondary_nav() {
 	global $ss_menus;

	remove_action( 'shoestrap_pre_wrap', array( $ss_menus, 'secondary_navbar' ) );
	remove_action( 'shoestrap_inside_nav_begin', array( $ss_menus, 'navbar_pre_searchbox' ), 11 );
	add_action( 'custom_inside_secondary_nav_start', array( $ss_menus, 'navbar_pre_searchbox' ) );	
}
add_action('init','custom_searchform_secondary_nav');