url rewriting - Allowing multiple URLs for same Post

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For a specific post, I want to create the illusion of child-posts.

The current post permalink structure is set to /%year%/%postname%/. So using this post URL as an example:

/2020/post-slug/

I would also like the following URLs to render the same Post:

/2020/post-slug/hello/
/2020/post-slug/small-world/

My hope was that something like this would suffice (in functions.php), where the Post ID is 1000:

function custom_rewrite_rule() {
    add_rewrite_rule('^2020/post-slug/([^/]*)/?','index.php?p=1000&path=$matches[1]','top');
}
add_action('init', 'custom_rewrite_rule', 10, 0);

The idea is that I would also pass the additional path information to the post which would be picked up in the template for some changes to original post.

When I do this, it loads the intended post but the URL changes back to:

/2020/post-slug/

...and I wanted the longer one to remain.

(I hard-flush rewrite rules in-between attempts).

本文标签： url rewritingAllowing multiple URLs for same Post