I’m building a WordPress-based website where I have a horizontal main navigation bar, and a sidebar listing all pages starting from second level for the respective top level page. While the main bar is no problem, I need to find a way to display only the second level pages and below of the current “main page”.
There is a parameter
child_offor wp_list_pages(), and there is the
$postclass with for
post_parentproperties. But in order to get it work on third level pages, there would be the need to find out the ID of the top level page.
How can I find out the ID of a any page’s root page? Thanks for any ideas.
(btw, a similar problem has been discussed here, but with no solution.)
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