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) [英] Why am I getting a 404 error when trying to reach the taxonomy.php page without any terms, (Wordpress don't see taxonomy page)

问题描述

我正在尝试创建分类法页面，所以我使用分类法 taxonomy-nowe.php 创建了分类法

I'm trying to create taxonomy page so I created taxonomy with taxonomie taxonomy-nowe.php

但是我的 WP 没有看到该页面，或者我在重写 URL 上弄乱了一些东西?有人可以检查我的代码，看看我做错了什么.我通过保存平原来刷新永久链接，然后返回到帖子名称永久链接.但我没有得到结果.

but my WP don't see the page or I mess something with the rewrite URL? Can someone check my code and see if something I'm doing wrong. I did the flush the permalinks by save the Plain and then return to Post name permalinks. But I get not result.

我想实现这样的想法:domain.pl/oferta/kopiarki/nowe

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_/...

We have two goals here, getting the permalink structure to the following
domain.com/_custom_post_type_/_taxonomy_/_term_/ ...

并获取 taxonomy.php 以返回与自定义帖子类型的特定分类部分 a 相关联的帖子和术语的索引，而不是 404.php 页面.

And get the taxonomy.php to return an index of posts and terms associated to a specific taxonomy part a of custom post type instead of a 404.php page.

"当访问者点击指向类别、标签或自定义的超链接时分类法，WordPress 按时间倒序显示一个帖子页面由该分类法过滤的顺序."

"When a visitor clicks on a hyperlink to category, tag or custom taxonomy, WordPress displays a page of posts in reverse chronological order filtered by that taxonomy."

来源:@https://developer.wordpress.org/themes/template-files-section/taxonomy-templates/

用于分类的默认模板是 taxonomy.php.这些文件让您可以定位特定分类法或特定分类法术语.例如:taxonomy-{taxonomy}-{term}.php 和 taxonomy-{taxonomy}.php

The default template used for taxonomies is taxonomy.php. These files let you target specific taxonomies or specific taxonomy terms. For example: taxonomy-{taxonomy}-{term}.php and taxonomy-{taxonomy}.php

在您的情况下，当您搜索 ./fruits/apples 时，您会得到与 apples 一词相关的所有帖子，要么显示在 taxonomy.phpcode> 或 taxonomy-fruits.php 或最后 taxonomy-fruits-aples.php.但是如果你想访问 ./fruits/ 怎么办?为什么访问 Fruit 会返回 404.php 错误? 嗯，因为 taxonomy.php 旨在显示针对术语的帖子，而不是针对分类法的帖子.这是正常和预期的行为.

In your case when you search for ./fruits/apples you get all posts related to the term apples either displayed on either taxonomy.php or on taxonomy-fruits.php or finally on taxonomy-fruits-aples.php. But what if you want to access ./fruits/? Why does accessing fruit gives back a 404.php error? Well because taxonomy.php was intended to displays posts against terms, not posts against taxonomies. This is the normal and intended behaviour.

这可以追溯到 10 年前https://core.trac.wordpress.org/ticket/13816，并提出了多个问题.(有趣的阅读，你应该看看).

This goes back to 10 years ago https://core.trac.wordpress.org/ticket/13816, and multiple issues were raised. (Interesting read, you should take a look).

当您搜索 ./fruits/apples/ 时，我们会得到 true" 但使用 ./fruits/ 我们会得到false" 考虑到该逻辑，如果用户搜索 ./fruits/ 或 ./fruits 他应该被重定向到模板对于所有相关的 fruits 帖子或条款，因为这不是默认行为，我想出了一个逐案解决方案:

When you search for ./fruits/apples/ we get a "true" but with ./fruits/ we get a "false" with that logic in mind if a user search for ./fruits/ or ./fruits he should be redirected to a template with all related fruits posts or terms, as this is not default behaviour, I came up with a case by case solution:

<?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();
  };
}; ?>

关于 substr，值应与您的分类标头等于 WITH 破折号的字符数相匹配.substr( $url, -7 ) == '/fruits'

Regarding substr, value should match the number of characters your taxonomy slug is equal to WITH dashes. substr( $url, -7 ) == '/fruits'

这可能不是最好的方法，但它可以完成工作，而且速度非常快.我没有看到任何其他有效的解决方案(2020 年 9 月).

This is probably not the best way but it does the job and it is pretty quick. I didn't see any other solution that was working (September 2020).

其中 fruits.php 是您的后备模板，以防用户搜索 ./fruits/ 或 ./fruits.我们将 url 的末尾与我们的自定义分类 slug 进行匹配.这应该只在 is_tax() 为 false 时发生！is_tax( 'fruits' ) 并且 url 与我们的分类相匹配.

Where fruits.php is your fallback template in case a user search for ./fruits/ or ./fruits. We take the end of the url to match it against our custom taxonomy slug. This should only happens when is_tax() is false ! is_tax( 'fruits' ) and the url matches our taxonomy.

现在假设我们的自定义分类与称为食谱"的自定义帖子类型相关联.然后，我们可以使用以下内容在回退 fruit.php 模板文件中显示自定义帖子类型的帖子和相关术语:

Let's say now that our custom taxonomy is associated with a custom post type called "recipes". We can then use the following to display posts and associated terms for a custom post type on our fallback fruit.php template file:

<?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;
};

}; ?>

此外，您还希望在您的永久链接中，在您的分类法之前，为您的自定义分类法设置自定义帖子类型 (CPT)，以获得如下结构:recipes/fruits/apples 其中，recipes 是您的自定义帖子类型.您可以在使用以下内容注册该分类法的参数时使用重写规则: 'rewrite' =>数组('slug' => '食谱/水果')，分层=>真, ), .

Additionally you also wanted to have the custom post type (CPT) for your custom taxonomy, in your permalink, in front of your taxonomy, to get a structure like so: recipes/fruits/apples where recipes is your custom post type. You can use the rewrite rule upon registering that taxonomy's arguments using the following: 'rewrite' => array( 'slug' => 'recipes/fruits' ), hierarchical => true, ),.

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 );
};

我们的永久链接结构现在应该如下所示
domain.com/recipes/fruits/apples/...
domain.com/_custom_post_type_/_taxonomy_/_term_/...

Our permalink structure should now look like the following
domain.com/recipes/fruits/apples/ ...
domain.com/_custom_post_type_/_taxonomy_/_term_/ ...

分类页面现在可以用作帖子和分类索引.

The taxonomy page can now be use as a posts and a taxonomies index.

这篇关于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)的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！