Hướng Dẫn Thêm Navi Breadcrumb Theme Flatsome

function get_flatsome_blog_breadcrumbs() {
    $delimiter = '<span class="divider">&#47;</span>';
    $home = 'Trang chủ';
    $before = '';
    $after = '';
    if ( !is_home() && !is_front_page() || is_paged() ) {
        echo '<div class="page-title shop-page-title product-page-title"><div class="page-title-inner flex-row medium-flex-wrap container"><div class="flex-col flex-grow medium-text-center"><div class="is-medium">';
        echo '<nav class="breadcrumbs">';
        global $post;
        $homeLink = get_bloginfo('url');
        echo '<a href="' . $homeLink . '">' . $home . '</a> ' . $delimiter . ' ';
        if ( is_category() ) {
            global $wp_query;
            $cat_obj = $wp_query->get_queried_object();
            $thisCat = $cat_obj->term_id;
            $thisCat = get_category($thisCat);
            $parentCat = get_category($thisCat->parent);
            if ($thisCat->parent != 0) echo(get_category_parents($parentCat, TRUE, ' ' . $delimiter . ' '));
            echo $before . single_cat_title('', false) . $after;
        } elseif ( is_day() ) {
            echo '<a href="' . get_year_link(get_the_time('Y')) . '">' . get_the_time('Y') . '</a> ' . $delimiter . ' ';
            echo '<a href="' . get_month_link(get_the_time('Y'),get_the_time('m')) . '">' . get_the_time('F') . '</a> ' . $delimiter . ' ';
            echo $before . get_the_time('d') . $after;
        } elseif ( is_month() ) {
            echo '<a href="' . get_year_link(get_the_time('Y')) . '">' . get_the_time('Y') . '</a> ' . $delimiter . ' ';
            echo $before . get_the_time('F') . $after;
        } elseif ( is_year() ) {
            echo $before . get_the_time('Y') . $after;
        } elseif ( is_single() && !is_attachment() ) {
            if ( get_post_type() != 'post' ) {
                $post_type = get_post_type_object(get_post_type());
                $slug = $post_type->rewrite;
                echo '<a href="' . $homeLink . '/' . $slug['slug'] . '/">' . $post_type->labels->singular_name . '</a> ' . $delimiter . ' ';
                echo $before . get_the_title() . $after;
            } else {
                $cat = get_the_category(); $cat = $cat[0];
                echo get_category_parents($cat, TRUE, ' ' . $delimiter . ' ');
                echo $before . get_the_title() . $after;
            }
        } elseif ( !is_single() && !is_page() && get_post_type() != 'post' && !is_404() ) {
            $post_type = get_post_type_object(get_post_type());
            echo $before . $post_type->labels->singular_name . $after;
        } elseif ( is_attachment() ) {
            $parent = get_post($post->post_parent);
            $cat = get_the_category($parent->ID); $cat = $cat[0];
            echo get_category_parents($cat, TRUE, ' ' . $delimiter . ' ');
            echo '<a href="' . get_permalink($parent) . '">' . $parent->post_title . '</a> ' . $delimiter . ' ';
            echo $before . get_the_title() . $after;
        } elseif ( is_page() && !$post->post_parent ) {
            echo $before . get_the_title() . $after;
        } elseif ( is_page() && $post->post_parent ) {
            $parent_id = $post->post_parent;
            $breadcrumbs = array();
            while ($parent_id) {
                $page = get_page($parent_id);
                $breadcrumbs[] = '<a href="' . get_permalink($page->ID) . '">' . get_the_title($page->ID) . '</a>';
                $parent_id = $page->post_parent;
            }
            $breadcrumbs = array_reverse($breadcrumbs);
            foreach ($breadcrumbs as $crumb) echo $crumb . ' ' . $delimiter . ' ';
            echo $before . get_the_title() . $after;
        } elseif ( is_search() ) {
            echo $before . 'Search results for "' . get_search_query() . '"' . $after;
        } elseif ( is_tag() ) {
            echo $before . 'Posts tagged "' . single_tag_title('', false) . '"' . $after;
        } elseif ( is_author() ) {
            global $author;
            echo $before . 'Articles posted by ' . $userdata->display_name . $after;
        } elseif ( is_404() ) {
            echo $before . 'Error 404' . $after;
        }
        if ( get_query_var('paged') ) {
            if ( is_category() || is_day() || is_month() || is_year() || is_search() || is_tag() || is_author() ) echo ' (';
            echo __('Page') . ' ' . get_query_var('paged');
            if ( is_category() || is_day() || is_month() || is_year() || is_search() || is_tag() || is_author() ) echo ')';
        }
        echo '</nav>';
        echo '</div></div></div></div>';
    }
}
add_action( 'flatsome_before_blog' , 'get_flatsome_blog_breadcrumbs', 20 );