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I first asked this question on Twitter but I guess the forum is a better place to get a good answer. The following code is taken from the head.inc file of the default PW theme: // Create the top navigation list by listing the children of the homepage. // If the section we are in is the current (identified by $page->rootParent) // then note it with <a class='on'> so we can style it differently in our CSS. // In this case we also want the homepage to be part of our top navigation, // so we prepend it to the pages we cycle through: $homepage = $pages->get("/"); $children = $homepage->children; $children->prepend($homepage); foreach($children as $child) { $class = $child === $page->rootParent ? " class='on'" : ''; echo "<li><a$class href='{$child->url}'>{$child->title}</a></li>"; } The definition of $page->rootParent from the cheatsheet: I understand, that if you have the following page structure … Home About ProjectsProject ASubproject 1 Project B … and calling $page->rootParent->title on »Subproject 1« outputs »Projects«. But why can I also check with it that a page is the »current« one like written in the above code ($child === $page->rootParent)? I guess the problem I have with this is that one method implies two different semantics (which confuses me). Just wanted to share my thoughts about this as I’m trying to truly »learn« PW form the inside out.
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