How to query children by post name/slug

Question

It appears that I can only use an ID for the param post_parent whether in WP_Query or get_children

Is there a way to query for children via postnames which are more readable.

Answer 1

Try using the get_page_by_path() function (Codex ref).

So, something like:

$mypage = get_page_by_path( 'page-slug' );

$mypageid = ( $mypage ? $mypage->ID : '0' );

Then, the post_parent argument becomes:

'post_parent' => $mypageid