为什么分页不起作用并在 wordpress 网站上出现 404 错误？

Question

美好的一天！问题是这样的：在模板类别（存档）中，当您单击 404 错误的第 2 页时，分页不起作用。不明白怎么解决请帮忙，已经脑袋坏了

我的循环：

<?php
$paged = ( get_query_var('paged') ) ? get_query_var('paged') : 1;
$arg = array(
  'cat' => get_queried_object_id(),
  'post_type'=>'post',
  'posts_per_page'=>9,
  //'order'=>'desc',
  'paged' => $paged,
  );
$query = new WP_query($arg);
if($query->have_posts()) : ?>
<section class="blog">
  <?php
  echo '<div class="row">';
  $i=0;
  $formcreated=false;
  while( $query->have_posts() ) :
    $query->the_post();
    // display post 
   endwhile;
   wp_reset_postdata();
endif;
?>

<div class="pagination">
  <?php
       if (function_exists('custom_pagination')) {
         custom_pagination($query->max_num_pages,"",$paged);
       }
     ?>
   <?php wp_reset_postdata(); ?>
</div>

我的自定义分页：

function my_post_queries( $query ) {
    // do not alter the query on wp-admin pages and only alter it if it's the main query
    if (!is_admin() && $query->is_main_query()){

        // alter the query for the home and category pages


        if(is_category()){
            $query->set('posts_per_page', 1);
            $query->set('post_type','product');
        }

    }
}
add_action( 'pre_get_posts', 'my_post_queries' );

function custom_pagination($numpages = '', $pagerange = '', $paged='') {

  if (empty($pagerange)) {
    $pagerange = 2;
  }

  /**
   * This first part of our function is a fallback
   * for custom pagination inside a regular loop that
   * uses the global $paged and global $wp_query variables.
   *
   * It's good because we can now override default pagination
   * in our theme, and use this function in default queries
   * and custom queries.
   */
  global $paged;
  if (empty($paged)) {
    $paged = 1;
  }
  if ($numpages == '') {
    global $wp_query;
    $numpages = $wp_query->max_num_pages;
    if(!$numpages) {
        $numpages = 1;
    }
  }

  /**
   * We construct the pagination arguments to enter into our paginate_links
   * function.
   */
  $pagination_args = array(
    'base'            => get_pagenum_link(1) . '%_%',
    'format'          => 'page/%#%',
    'total'           => $numpages,
    'current'         => $paged,
    'show_all'        => False,
    'end_size'        => 1,
    'mid_size'        => $pagerange,
    'prev_next'       => True,
    'prev_text'       => __('&#60;'),
    'next_text'       => __('&#62;'),
    'type'            => 'plain',
    'add_args'        => false,
    'add_fragment'    => ''
  );

  $paginate_links = paginate_links($pagination_args);

  if ($paginate_links) {
    echo "<nav class='custom-pagination'>";
      echo $paginate_links;
    echo "</nav>";
  }

}

Answer 1

由于最近在两个不同的论坛上出现了这个问题，所以我正在回答这个问题。

如果您使用自定义分页，例如您正在使用的那个似乎来自 http://callmenick.com/post/custom-wordpress-loop-with-pagination 但它也发生在 Genesis 子主题中，因为父编号分页是人们的。

为什么会出现 404 页面？ callmenick.com 和 Genesis (genesis_posts_nav) 中的自定义分页用于 main query 等如果你的 different query 的分页在阅读设置（为主查询设置）中的每页帖子下，那么你会得到第 2 页的 404。

Every front end page request on a WordPress site produces a main query. The template that WordPress decides to load is based on the results of that main query (you can see the order that WordPress does these things by looking at the Action Reference page). Despite the fact that you never output the results of that query, it's still run, and in the case of paginated archives, this is an issue if you're trying to use that pagination for a different query. — Milo https://wordpress.stackexchange.com/a/120963/64742

您不会经常看到这个问题，因为许多人只是为该循环构建分页，而不是 re-using 它来自 functions.php 文件或父主题。你可以在这里了解到：https://codex.wordpress.org/Function_Reference/paginate_links

让我们从头开始，每当您编码时，在 wp-config 中打开调试。php

我的 cpt 存档中的基本自定义循环。

archive-product.php

 <?php $paged = ( get_query_var('paged') ) ? get_query_var('paged') : 1;

  $product_args = array(
      'post_type' => 'product',
      'posts_per_page' => 2, //the same as the parse_query filter in our functions.php file
      'paged' => $paged,
      'page' => $paged
    );

  $product_query = new WP_Query( $product_args ); ?>

  <?php if ( $product_query->have_posts() ) : ?>

    <!-- the loop -->
    <?php while ( $product_query->have_posts() ) : $product_query->the_post(); ?>
      <article class="loop">
        <h3><?php the_title(); ?></h3>
        <div class="content">
          <?php the_excerpt(); ?>
        </div>
      </article>
    <?php endwhile; ?>
    <!-- end of the loop -->


    <!-- pagination here -->
    <?php
       if (function_exists( 'custom_pagination' )) :
          custom_pagination( $product_query->max_num_pages,"",$paged );
      endif;
   ?>


  <?php wp_reset_postdata(); ?>

  <?php else:  ?>
    <p><?php _e( 'Sorry, no posts matched your criteria.' ); ?></p>
  <?php endif; ?>

在您的 functions.php 文件中：

了解条件。 https://codex.wordpress.org/Conditional_Tags https://codex.wordpress.org/Function_Reference/is_post_type_archive

/** 
 * Posts per page for CPT archive
 * prevent 404 if posts per page on main query
 * is greater than the posts per page for product cpt archive
 *
 * thanks to https://sridharkatakam.com/ for improved solution!
 */

function prefix_change_cpt_archive_per_page( $query ) {
    
    //* for cpt or any post type main archive
    if ( $query->is_main_query() && ! is_admin() && is_post_type_archive( 'product' ) ) {
        $query->set( 'posts_per_page', '2' );
    }

}
add_action( 'pre_get_posts', 'prefix_change_cpt_archive_per_page' );

/**
 * 
 * Posts per page for category (test-category) under CPT archive 
 *
*/
function prefix_change_category_cpt_posts_per_page( $query ) {

    if ( $query->is_main_query() && ! is_admin() && is_category( 'test-category' ) ) {
        $query->set( 'post_type', array( 'product' ) );
        $query->set( 'posts_per_page', '2' );
    }

}
add_action( 'pre_get_posts', 'prefix_change_category_cpt_posts_per_page' );


/**
*
* custom numbered pagination 
* @http://callmenick.com/post/custom-wordpress-loop-with-pagination
* 
*/
function custom_pagination( $numpages = '', $pagerange = '', $paged='' ) {

  if (empty($pagerange)) {
    $pagerange = 2;
  }

  /**
   * This first part of our function is a fallback
   * for custom pagination inside a regular loop that
   * uses the global $paged and global $wp_query variables.
   * 
   * It's good because we can now override default pagination
   * in our theme, and use this function in default queries
   * and custom queries.
   */
  global $paged;
  if (empty($paged)) {
    $paged = 1;
  }
  if ($numpages == '') {
    global $wp_query;
    $numpages = $wp_query->max_num_pages;
    if(!$numpages) {
        $numpages = 1;
    }
  }

  /** 
   * We construct the pagination arguments to enter into our paginate_links
   * function. 
   */
  $pagination_args = array(
    'base'            => get_pagenum_link(1) . '%_%',
    'format'          => 'page/%#%',
    'total'           => $numpages,
    'current'         => $paged,
    'show_all'        => False,
    'end_size'        => 1,
    'mid_size'        => $pagerange,
    'prev_next'       => True,
    'prev_text'       => __('&laquo;'),
    'next_text'       => __('&raquo;'),
    'type'            => 'plain',
    'add_args'        => false,
    'add_fragment'    => ''
  );

  $paginate_links = paginate_links($pagination_args);

  if ($paginate_links) {
    echo "<nav class='custom-pagination'>";
      echo "<span class='page-numbers page-num'>Page " . $paged . " of " . $numpages . "</span> ";
      echo $paginate_links;
    echo "</nav>";
  }

}

Answer 2

在 wp-include/functions.php

添加这些行

function my_pagination_rewrite() {
 add_rewrite_rule('([a-z]+)/page/?([0-9]{1,})/?$', 'index.php?category_name=$matches[1]&paged=$matches[2]', 'top');
}


add_action('init', 'my_pagination_rewrite');

Answer 3

我的网站遇到了同样的问题https://chronodivers.com我有 3 个相似的网站，都运行相同的主题、插件、WP 版本 (5.6) 等。只有这个网站有问题。

所有站点都使用 PERMALINK 格式 /%category%/%postname%/

我试过插件 ( https://wordpress.org/support/view/plugin-reviews/category-pagination-fix) 对我不起作用。

然后我执行了这些简单的前端任务

将固定链接格式更改为 PLAIN 并保存。
刷新缓存
已将永久链接格式改回 /%category%/%postname%/ 并保存 40 刷新缓存
我从 YOAST 插件中弹出一个“警告”，建议由于永久链接结构发生变化，可能需要重建索引数据库（不记得确切的措辞）并且它提到了 WP CLI ...
我只是转到 YOAST > 工具 > 优化 SEO 数据
5 完成后清除缓存
行得通。我检查了所有类别，它们都有效

这次我没有更改 PHP 文件、htaccess 等

为什么分页不起作用并在 wordpress 网站上出现 404 错误？

Why pagination is not working and gives a 404 error on the wordpress site?

php

wordpress

pagination

wordpress-theming

custom-wordpress-pages

archive-product.php

在您的 functions.php 文件中：