Single Redirection Rule for Pages and Archive links

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I am trying to find pretty URL solution for url parameters.

Consider this url set

http://example.com?token=foo
http://example.com/pagename?token=foo
http://example.com/parent/childpage?token=foo
http://example.com/category/bar?token=foo
..

My Previous Code Example

add_action('template_redirect', function(){

    if(!isset($_GET['token])){
         return;
    }

    // run code

});

Need to move the whole thing into WordPress Pretty url.

Example pretty Urls with parameter

http://example.com/foo
http://example.com/pagename/foo
http://example.com/parent/childpage/foo
http://example.com/category/bar/foo
..

For a page this is the working Rewrite rule

add_rewrite_rule("([^/]*)/foo", 'index.php?pagename=$matches[1]&'. foo .'=1', 'top');

Which doesn’t seem to work for nested child pages. So for child pages upto 2 nested page. I have to add

add_rewrite_rule("([^/]*)/foo", 'index.php?pagename=$matches[1]&foo=1', 'top');
add_rewrite_rule("([^/]*)/([^/]*)/foo", 'index.php?pagename=$matches[1]/$matches[2]&foo=1', 'top');
add_rewrite_rule("([^/]*)/([^/]*)/([^/]*)/foo", 'index.php?pagename=$matches[1]/$matches[2]/$matches[3]&foo=1', 'top');

Is there any possible way to do it on single line of code so all pages, nested or parent, posts, archive links?

My end goal is to pass the extra foo parameters. Other WordPress query vars remains same.

Full Gist for you to look into more details https://gist.github.com/prionkor/ef2e6b24d8d5561b4ad7

1 Answer
1

In order to add a parameter to all url of WordPress add_rewrite_endpoint() is more appropriate.

I needed to add /foo after all URL so add_rewrite_endpoint("foo", EP_ALL); did the trick.

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