Как получить двойное главное навигационное меню с брендом в центре начальной загрузки 4 WordPress с Navwalker

Я пытаюсь создать главное меню навигации для темы WordPress Bootstrap 4, над которой я работаю. У меня есть небольшая кобыла, заставляющая отображать меню, и я надеюсь, что кто-то может мне помочь.

По сути, мне бы хотелось, чтобы изображение в центре меню было ориентировано на бренд и чтобы меню располагалось по обе стороны от меню. При сворачивании оба меню должны быть видны в одном и том же выпадающем меню. В настоящее время я не могу получить второе меню для отображения.

Пока я здесь, ниже приведены фрагменты соответствующих файлов. Очень ценю усилия тех, у кого есть время помочь.

functions.php

// This theme uses wp_nav_menu_left() in one location.
register_nav_menus( array(
'main-left' => esc_html__( 'Main Left', 'wp-bootstrap-starter' ),
) );

// This theme uses wp_nav_menu_righ() in one location.
register_nav_menus( array(
'main-right' => esc_html__( 'Main Right', 'wp-bootstrap-starter' ),
) );

Navwalker

    <?php

if ( !defined( 'ABSPATH' ) ) {
die( 'Direct access is forbidden.' );
}

if ( !class_exists( 'WP_Bootstrap_Navwalker' ) ) {

class WP_Bootstrap_Navwalker extends Walker_Nav_Menu {

public function start_lvl( &$output, $depth = 0, $args = array() ) {
if ( isset( $args->item_spacing ) && 'discard' === $args->item_spacing ) {
$t = '';
$n = '';
} else {
$t = "\t";
$n = "\n";
}

$this->dropdown = true;
$output         .= $n . str_repeat( $t, $depth ) . '<div class="dropdown-menu" role="menu">' . $n;
}

/**
* Ends the list of after the elements are added.
*
* @since       1.0.0
*
* @see Walker::end_lvl()
*
* @param string   $output Passed by reference. Used to append additional content.
* @param int      $depth  Depth of menu item. Used for padding.
* @param stdClass $args   An object of wp_nav_menu() arguments.
*/
public function end_lvl( &$output, $depth = 0, $args = array() ) {
if ( isset( $args->item_spacing ) && 'discard' === $args->item_spacing ) {
$t = '';
$n = '';
} else {
$t = "\t";
$n = "\n";
}

$this->dropdown = false;
$output         .= $n . str_repeat( $t, $depth ) . '</div>' . $n;
}

/**
* Starts the element output.
*
* @since 1.0.0
*
* @see Walker::start_el()
*
* @param string   $output Passed by reference. Used to append additional content.
* @param WP_Post  $item   Menu item data object.
* @param int      $depth  Depth of menu item. Used for padding.
* @param stdClass $args   An object of wp_nav_menu() arguments.
* @param int      $id     Current item ID.
*/
public function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {
if ( isset( $args->item_spacing ) && 'discard' === $args->item_spacing ) {
$t = '';
$n = '';
} else {
$t = "\t";
$n = "\n";
}

$indent = str_repeat( $t, $depth );

if ( 0 === strcasecmp( $item->attr_title, 'divider' ) && $this->dropdown ) {
$output .= $indent . '<div class="dropdown-divider"></div>' . $n;
return;
} elseif ( 0 === strcasecmp( $item->title, 'divider' ) && $this->dropdown ) {
$output .= $indent . '<div class="dropdown-divider"></div>' . $n;
return;
}

$classes   = empty( $item->classes ) ? array() : (array) $item->classes;
$classes[] = 'menu-item-' . $item->ID;
$classes[] = 'nav-item';

if ( $args->walker->has_children ) {
$classes[] = 'dropdown';
}

if ( 0 < $depth ) {
$classes[] = 'dropdown-menu';
}

/**
* Filters the arguments for a single nav menu item.
*
* @since 1.2.0
*
* @param stdClass $args  An object of wp_nav_menu() arguments.
* @param WP_Post  $item  Menu item data object.
* @param int      $depth Depth of menu item. Used for padding.
*/
$args = apply_filters( 'nav_menu_item_args', $args, $item, $depth );

/**
* Filters the CSS class(es) applied to a menu item's list item element.
*
* @since 3.0.0
* @since 4.1.0 The `$depth` parameter was added.
*
* @param array    $classes The CSS classes that are applied to the menu item's `<li>` element.
* @param WP_Post  $item    The current menu item.
* @param stdClass $args    An object of wp_nav_menu() arguments.
* @param int      $depth   Depth of menu item. Used for padding.
*/
$class_names = join( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $item, $args, $depth ) );
$class_names = $class_names ? ' class="' . esc_attr( $class_names ) . '"' : '';

/**
* Filters the ID applied to a menu item's list item element.
*
* @since 3.0.1
* @since 4.1.0 The `$depth` parameter was added.
*
* @param string   $menu_id The ID that is applied to the menu item's `<li>` element.
* @param WP_Post  $item    The current menu item.
* @param stdClass $args    An object of wp_nav_menu() arguments.
* @param int      $depth   Depth of menu item. Used for padding.
*/
$id = apply_filters( 'nav_menu_item_id', 'menu-item-' . $item->ID, $item, $args, $depth );
$id = $id ? ' id="' . esc_attr( $id ) . '"' : '';

if ( !$this->dropdown ) {
$output .= $indent . '<li' . $id . $class_names . '>' . $n . $indent . $t;
}

$atts           = array();
$atts['title']  = !empty( $item->attr_title ) ? $item->attr_title : '';
$atts['target'] = !empty( $item->target ) ? $item->target : '';
$atts['rel']    = !empty( $item->xfn ) ? $item->xfn : '';
$atts['href']   = !empty( $item->url ) ? $item->url : '';

/**
* Filters the HTML attributes applied to a menu item's anchor element.
*
* @since 3.6.0
* @since 4.1.0 The `$depth` parameter was added.
*
* @param array $atts {
*     The HTML attributes applied to the menu item's `<a>` element, empty strings are ignored.
*
*     @type string $title  Title attribute.
*     @type string $target Target attribute.
*     @type string $rel    The rel attribute.
*     @type string $href   The href attribute.
* }
* @param WP_Post  $item  The current menu item.
* @param stdClass $args  An object of wp_nav_menu() arguments.
* @param int      $depth Depth of menu item. Used for padding.
*/
$atts = apply_filters( 'nav_menu_link_attributes', $atts, $item, $args, $depth );

if ( $args->walker->has_children ) {
$atts['data-toggle']   = 'dropdown';
$atts['aria-haspopup'] = 'true';
$atts['aria-expanded'] = 'false';
}

$attributes = '';
foreach ( $atts as $attr => $value ) {
if ( !empty( $value ) ) {
$value      = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value );
$attributes .= ' ' . $attr . '="' . $value . '"';
}
}

/** This filter is documented in wp-includes/post-template.php */
$title = apply_filters( 'the_title', $item->title, $item->ID );

/**
* Filters a menu item's title.
*
* @since 4.4.0
*
* @param string   $title The menu item's title.
* @param WP_Post  $item  The current menu item.
* @param stdClass $args  An object of wp_nav_menu() arguments.
* @param int      $depth Depth of menu item. Used for padding.
*/
$title = apply_filters( 'nav_menu_item_title', $title, $item, $args, $depth );

$item_classes = array( 'nav-link' );

if ( $args->walker->has_children ) {
$item_classes[] = 'dropdown-toggle';
}

if ( 0 < $depth ) {
$item_classes[] = 'dropdown-item';
}

$item_output = $args->before;
$item_output .= '<a class="' . implode( ' ', $item_classes ) . '" ' . $attributes . '>';
$item_output .= $args->link_before . $title . $args->link_after;
$item_output .= '</a>';
$item_output .= $args->after;

/**
* Filters a menu item's starting output.
*
* The menu item's starting output only includes `$args->before`, the opening `<a>`,
* the menu item's title, the closing `</a>`, and `$args->after`. Currently, there is
* no filter for modifying the opening and closing `<li>` for a menu item.
*
* @since 3.0.0
*
* @param string   $item_output The menu item's starting HTML output.
* @param WP_Post  $item        Menu item data object.
* @param int      $depth       Depth of menu item. Used for padding.
* @param stdClass $args        An object of wp_nav_menu() arguments.
*/
$output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args );
}

/**
* Ends the element output, if needed.
*
* @since 1.0.0
*
* @see Walker::end_el()
*
* @param string   $output Passed by reference. Used to append additional content.
* @param WP_Post  $item   Page data object. Not used.
* @param int      $depth  Depth of page. Not Used.
* @param stdClass $args   An object of wp_nav_menu() arguments.
*/
public function end_el( &$output, $item, $depth = 0, $args = array() ) {
if ( isset( $args->item_spacing ) && 'discard' === $args->item_spacing ) {
$t = '';
$n = '';
} else {
$t = "\t";
$n = "\n";
}

$output .= $this->dropdown ? '' : str_repeat( $t, $depth ) . '</li>' . $n;
}

/**
* Menu Fallback
*
* @since 1.0.0
*
* @param array $args passed from the wp_nav_menu function.
*/
public static function fallback( $args ) {
if ( current_user_can( 'edit_theme_options' ) ) {

$defaults = array(
'container'       => 'div',
'container_id'    => false,
'container_class' => false,
'menu_class'      => 'menu',
'menu_id'         => false,
);
$args     = wp_parse_args( $args, $defaults );
if ( !empty( $args['container'] ) ) {
echo sprintf( '<%s id="%s" class="%s">', $args['container'], $args['container_id'], $args['container_class'] );
}
echo sprintf( '<ul id="%s" class="%s">', $args['container_id'], $args['container_class'] ) .
'<li class="nav-item">' .
'<a href="' . admin_url( 'nav-menus.php' ) . '" class="nav-link">' . __( 'Add a menu' ) . '</a>' .
'</li></ul>';
if ( !empty( $args['container'] ) ) {
echo sprintf( '</%s>', $args['container'] );
}
}
}

}

}

header.php

        <div class="container">
<nav class="navbar navbar-expand-xl navbar-dark p-0">
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target=".navbar-collapse" aria-controls="" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>


<div class="navbar-brand"><!-- brand centered-->
<?php if ( get_theme_mod( 'wp_bootstrap_starter_logo' ) ): ?>
<a href="<?php echo esc_url( home_url( '/' )); ?>">
<img src="<?php echo esc_attr(get_theme_mod( 'wp_bootstrap_starter_logo' )); ?>" alt="<?php echo esc_attr( get_bloginfo( 'name' ) ); ?>">
</a>
<?php else : ?>
<a class="site-title" href="<?php echo esc_url( home_url( '/' )); ?>"><?php esc_url(bloginfo('name')); ?></a>
<?php endif; ?>

</div>

<button type="button" class="btn btn-default navbar-btn pull-right d-sm-block d-md-none">
<i class="fa fa-phone fa-2x"></i>
</button>



<?php
wp_nav_menu(array(
'theme_location'    => 'main-left',
'container'       => 'div',
'container_id'    => '',
'container_class' => 'collapse navbar-collapse justify-content-end',
'menu_id'         => false,
'menu_class'      => 'navbar-left',
'depth'           => 3,
'fallback_cb'     => 'wp_bootstrap_navwalker::fallback',
'walker'          => new wp_bootstrap_navwalker()
));

wp_nav_menu(array(
'theme_location'    => 'main-right',
'container'       => 'div',
'container_id'    => '',
'container_class' => 'collapse navbar-collapse justify-content-end',
'menu_id'         => false,
'menu_class'      => 'navbar-right',
'depth'           => 3,
'fallback_cb'     => 'wp_bootstrap_navwalker::fallback',
'walker'          => new wp_bootstrap_navwalker()
));
?>

</nav>
</div>