在没有404或“找不到页面”的情况下将任意URL映射到WordPress中

Question

Let's say my blog lives here...

/blog/

Let's say I have an infinite number of arbitrary URLs...

/blog/browse/furniture/
/blog/browse/decor/
/blog/browse/bed/

I would like the theme wrapper to load the browse.php template for any pages that match the /browse/ URL pattern.

I was able to make this happen, however, while the template content loads in just fine, WordPress is treating the page as a 404 page in the background. So the page title is "Page Not Found", and built-in functions such as "is_404()" are returning true. Is there any way to map these dynamic pages and have WordPress think they are valid?

Here's the code I came up with...

add_filter('template_include', function($template) {
  global $wp_query;
  if ($wp_query->query['category_name'] === 'browse') {
    $template = locate_template(array('browse.php'));
  }
  return $template;
}, 99);

By the way, this method works because my permalink structure is set to /%category%/%postname%/ -- so currently, WordPress sees these /browse/ pages as a category and therefore, I am able to check against the "category_name" object.

Any help you can provide would be much appreciated.

Answer 1

The problem here is that you just filter the template that should be displayed - so Wordpress send a 404, and you just tell him to show a different template for your 404 page for this special case.

What you need to do is to create a page in admin and associate it to your template - doesn't matter if you don't use content or title of it. You just need to attach a post/page to your template in order to make a valid rewrite rule.

You can create that page from your plugin on activation with the following (it will store the page ID as an option):

function register_activation_hook() {
    if(get_option('browse_page_id') !== false) {
        $page_id = wp_insert_post(array(
            'post_title' => __('Your page title', 'plugin-domain'),
            'post_content' => '',
            'post_status' => 'publish',
            'post_type' => 'page',
            'post_author' => 1,
        ));
        if($page_id && ! is_wp_error($page_id)) {
            update_post_meta($page_id, '_wp_page_template', 'browse.php');
            update_option('browse_page_id', $page_id, true);
        }
    }
}
register_activation_hook(__FILE__, 'register_activation_hook');

You must use this in your plugin file, and deactivate/reactivate your plugin to make it trigger.

To make your template recognized by Wordpress, add the following at the top of your template:

<?php
/**
 * Template Name: Browse
 */
?>

Then, in your functions.php , add the following in order to define a new rewrite tag to handle your category:

function custom_rewrite_tag() {
  add_rewrite_tag('%browse_category%', '([^&]+)');
}
add_action('init', 'custom_rewrite_tag', 10, 0);

And finally, add a rewrite rule that will use the page ID previously created and the rewrite tag:

function custom_rewrite_rule() {
    if(get_option('browse_page_id') !== false) {
        add_rewrite_rule('^browse/([^/]*)/?','index.php?page_id='.get_option('browse_page_id').'&browse_category=$matches[1]','top');
    }
}
add_action('init', 'custom_rewrite_rule', 10, 0);

To access the category parameter in your template, use the following:

$wp_query->query_vars['browse_category']