为什么在尝试访问没有任何术语的 taxonomy.php 页面时出现 404 错误，(Wordpress 看不到分类页面)

I want to achive somethink like this: domain.pl/oferta/kopiarki/nowe

// custom post type
function td_devices_posttype() {
 $labels = array(
     'name'                => _x( 'Kopiarki', 'Ogólna nazwa wpisów', 'textdomain' ),
     'singular_name'       => _x( 'Kopiarka', 'Pojedyńcza nazwa wpisu', 'textdomain' ),
     'menu_name'           => esc_html__( 'Kopiarki', 'textdomain' ),
     'parent_item_colon'   => esc_html__( 'Rodzic', 'textdomain' ),
     'all_items'           => esc_html__( 'Wszystkie kopiarki', 'textdomain' ),
     'view_item'           => esc_html__( 'Wyświetl kopiarki', 'textdomain' ),
     'add_new_item'        => esc_html__( 'Dodaj nową kopiarkę', 'textdomain' ),
     'add_new'             => esc_html__( 'Dodaj nową', 'textdomain' ),
     'edit_item'           => esc_html__( 'Edytuj Kopiarkę', 'textdomain' ),
     'update_item'         => esc_html__( 'Zaktualizuj kopiarkę', 'textdomain' ),
     'search_items'        => esc_html__( 'Szukaj kopiarkę', 'textdomain' ),
     'not_found'           => esc_html__( 'Nie zanleziono', 'textdomain' ),
     'not_found_in_trash'  => esc_html__( 'Nie znaleziono w koszu', 'textdomain' )
 );
 $args = array(
     'label'               => esc_html__( 'kopiarki', 'textdomain' ),
     'description'         => esc_html__( 'Wszystkie kopiarki', 'textdomain' ),
     'labels'              => $labels,
     'taxonomies'          => array( 'nowe' ),
     'hierarchical'        => true,
     'public'              => true,
     'show_ui'             => true,
     'show_in_menu'        => true,
     'show_in_nav_menus'   => true,
     'show_in_admin_bar'   => true,
     'menu_position'       => 100,
     'can_export'          => true,
     'has_archive'         => true,
     'exclude_from_search' => false,
     'publicly_queryable'  => true,
     'query_var'           => true,
     'show_admin_column'   => true,
     'capability_type'     => 'page',
     'rewrite'             => array('slug' => 'oferta/kopiarki'),
     'supports'            => array( 'title','editor','thumbnail', 'custom-fields')
 );
 register_post_type( 'kopiarki', $args );
  //flush_rewrite_rules();
}
add_action( 'init', 'td_devices_posttype' );

// custom taxonomies new
function new_posttype_taxonomy() {
    $labels = array(
        'name'                  => 'Nowe',
        'singular_name'         => 'Nowa',
        'search_items'          => 'Szukaj nowych',
        'all_items'             => 'Wszystkie nowe kopiarki',
        'parent_item'           => 'Rodzic',
        'parent_item_colon'     => 'Dwukropek elementu nadrzędnego:',
        'edit_item'             => 'Edytuj nową kopiarkę',
        'update_item'           => 'Zaktualizuj nową kopiarkę',
        'add_new_item'          => 'Dodaj nową kopiarkę',
        'new_item_name'         => 'Nowa nazwa kopiarki',
        'menu_name'             => 'Nowe'
    );

    $args = array (
        'hierarchical'          => true,
        'labels'                => $labels,
        'show_ui'               => true,
        'show_admin_column'     => true,
        'show_in_rest'          => true,
        'query_var'             => true,
        'rewrite'               => array(
      'slug'                    => 'nowe',
      'with_front'              => false,
    )
    );
    register_taxonomy( 'nowe', array( 'kopiarki' ), $args );

推荐答案

这篇文章已经被编辑了很多次，因为当时我没有关于这个问题的所有信息.从那以后，我对该主题进行了广泛的研究.以下内容直接切入正题和答案.

我们在这里有两个目标，获得以下永久链接结构
domain.com/_custom_post_type_/_taxonomy_/_term_/...

<?php add_action( 'template_redirect', 'fallback_custom_taxonomy_fruits' );
function fallback_custom_taxonomy_fruits() {
  $url = $_SERVER[ 'REQUEST_URI' ];
  if ( ! is_tax( 'fruits' ) && substr( $url, -7 ) == '/fruits' || substr( $url, -8 ) == '/fruits/' ) {
    include( get_template_directory() . '/fruits.php' );
    exit();
  };
}; ?>

<?php
$custom_post_type = 'recipes';
$taxonomy = 'fruits';

$terms = get_terms( $taxonomy );
foreach ( $terms as $term ) {
wp_reset_query();
$args = array(
  'post_type' => $custom_post_type,
  'tax_query' => array(
  array(
    'taxonomy' => $taxonomy,
    'field' => 'slug',
    'terms' => $term->slug,
  ),
), );

$query = new WP_Query( $args );
if ( $query->have_posts() ) {
  echo $term->name.'<br/>';
  while ( $query->have_posts() ) : $query->the_post();
  echo '<a href="'.get_permalink().'">'.the_title().'</a><br>';
  endwhile;
};

}; ?>

add_action( 'init', 'custom_taxonomy_nowe' );
function custom_taxonomy_nowe() {
  $custom_post_type = 'Recipes';
  $singular = 'Fruit';
  $plural = 'Fruits';
  $labels = array(
    'name' => $plural,
    'singular_name' => $singular,
  );
  $args = array(
    'labels' => $labels,
    'hierarchical' => true,
    'rewrite' => array( 'slug' => strtolower( $custom_post_type.'/'.$plural ), 'hierarchical' => true, ),
  );
  register_taxonomy( strtolower( $plural ), strtolower( $custom_post_type ), $args );
};