wordpress - 覆盖wordpress路由/url重写？

Question

我想根据 URL 提供不同的内容。
我从通过自定义模板设置自定义页面开始，但我对其他东西持开放态度。
主要目标是拥有一个 PHP 页面，该页面可以基于 URL 以编程方式提供不同的内容。
例如:

https://some-url.com/my-plugin/ -> run my page
https://some-url.com/my-plugin/foo/ -> run my page
https://some-url.com/my-plugin/foo2/abc/ -> run my page
etc...

我一直在看 add_rewrite_rule , add_rewrite_tag , flush_rewrite_rules和 WP_Rewrite API但我对我应该使用哪一个感到困惑？
我找到了一个例子 here但我无法让它工作，我得到 404，知道为什么吗？:

 /*
   Plugin Name: Products Plugin
   Plugin URI: http://clivern.com/
   Description: Register URL rules for our products
   Version: 1.0
   Author: Clivern
   Author URI: http://clivern.com
   License: MIT
  */
 function products_plugin_activate() {
  products_plugin_rules();
  flush_rewrite_rules();
 }

 function products_plugin_deactivate() {
  flush_rewrite_rules();
 }

 function products_plugin_rules() {
  add_rewrite_rule('products/?([^/]*)', 'index.php?pagename=products&product_id=$matches[1]', 'top');
 }

 function products_plugin_query_vars($vars) {
  $vars[] = 'product_id';
  return $vars;
 }

 function products_plugin_display() {
  $products_page = get_query_var('pagename');
  $product_id = get_query_var('product_id');
  if ('products' == $products_page && '' == $product_id):
   //show all products
   exit;
  elseif ('products' == $products_page && '' != $product_id):
   //show product page
   exit;
  endif;
 }

 //register activation function
 register_activation_hook(__FILE__, 'products_plugin_activate');
 //register deactivation function
 register_deactivation_hook(__FILE__, 'products_plugin_deactivate');
 //add rewrite rules in case another plugin flushes rules
 add_action('init', 'products_plugin_rules');
 //add plugin query vars (product_id) to wordpress
 add_filter('query_vars', 'products_plugin_query_vars');
 //register plugin custom pages display
 add_filter('template_redirect', 'products_plugin_display');

Answer 1

首先，确保启用了漂亮的永久链接，在这种情况下，应取消选择“设置”中的“普通”选项 - 永久链接:
Select one of these options to enable pretty permalinks
您可以检查代码中是否启用了漂亮的永久链接，如下所示:

function is_enabled_pretty_permalinks() {
    return !empty( get_option( 'permalink_structure' ) );
}

if ( is_enabled_pretty_permalinks() ) {
    echo 'Pretty permalinks enabled';
}

接下来添加一个新的重写规则:

function add_my_rewrite_rule() {
   $page_slug = 'products'; // slug of the page you want to be shown to
   $param     = 'do';       // param name you want to handle on the page

   add_rewrite_rule('my-plugin/?([^/]*)', 'index.php?pagename=' . $page_slug . '&' . $param . '=$matches[1]', 'top');
}
add_action('init', 'add_my_rewrite_rule');

将您的参数添加到查询变量中，以便您能够在页面上处理它:

function add_my_query_vars($vars) {
    $vars[] = 'do'; // param name you want to handle on the page
    return $vars;
}
add_filter('query_vars', 'add_my_query_vars');

然后你可以访问你的查询变量 do在页面模板或短代码中，例如:

function my_plugin_shortcode_handler( $atts ){
  $do = get_query_var( 'do' );
  if ( $do === 'this' ) {
     return 'do this';
  } else {
     return 'do that';
  }
}
add_shortcode( 'myshortcode', 'my_plugin_shortcode_handler' );

然后 place the shortcode to the content via Gutenberg .
查看链接:

https://some-url.com/my-plugin/this/ - outputs "do this"
https://some-url.com/my-plugin/that/ - outputs "do that".