How to get page_id for url rewrite or how to use page slug for calling a page?

Question

I would like to simply create an url rewrite that takes the third argument and matches it to its corresponding pages, ignoring the other two arguments.

domain.com/argument1/argument2/page-slug = 'index.php?page_id=XXX';

Is it possible to call a page via it's slug instead of it's ID, or can I somehow generate the id, based on a pages slug?

UPDATE:

I actually got a lot further here now:

add_filter('rewrite_rules_array', 'mmp_rewrite_rules');

function mmp_rewrite_rules($rules) {
   $newRules  = array();
   $newRules['bus-tours/(.+)/(.+)/(.+)/?$'] = 'index.php?bus-tours=$matches[3]';
   $newRules['(.+)/?$']                     = 'index.php?pagename=$matches[1]';
   //$newRules['bus-tours/(.+)/(.+)/?$']    = 'index.php?pagename=$matches[2]';

return array_merge($newRules, $rules);
}

What this allows me is:

/bus-tours -> and it shows the bus-tours pages.
/bus-tours/California -> and it shows me the child page of bus-tours, which is Calfironia
/bus-tours/california/SanFran/Tourx -> and it shows me the CPT post for TourX

So, pretty good for now. Tho, since I am using a lot of CPT's I would like to modify the first rule so "bus-tours" can be replaced with a variable.

$newRules['(.+)/(.+)/(.+)/(.+)/?$'] = 'index.php?$matches[1]=$matches[3]';

This doesn't work. Any help here?

Thanks, Daniel

Answer 1

Use pagename instead of page_id to query by slug. Note that if a page is a child of another page, pagename has to be the full parent/child path to the page, since slugs only have to be unique per-level in hierarchical post types. See WP_Query for the full list of query vars.

Answer 2

You can try selecting the $post_id where $page_name = $page_name