Don't show submenu/tree menu if collection?

[silverhuang]

Hi again,

Another beginner PHP question, using Kirby 4 and ZOON theme.

In ZOON, you can set a sub-menu to show as a tree menu at the right side of the page, which is very handy. However, when there is a collection of sub-pages involved, i.e. a blog, it becomes very long and unsightly.

Hence I want the tree menu at the side to only work when it’s children/sub-pages of an article and not a collection, as I tend to only use collections for blogs.

site/snippets/submenu.php is:

<nav class="submenu">
  <h2 class="submenu-heading">
    <a href="<?= $section->url() ?>">
      <?= $section->title() ?>
    </a>
  </h2>
  <?php 
    $subpages = $pages->findOpen()->children();
    snippet('treemenu', ['subpages' => $subpages]);
  ?>
</nav>

And site/snippets/treemenu.php is:

<?php if (!isset($subpages)) $subpages = $site->pages() ?>
<ul>
  <?php foreach ($subpages->listed() as $p) : ?>
    <li class="depth-<?= $p->depth() ?>">
      <a class="<?= e($p->isActive(), 'current', '') ?> <?= e($p->hasChildren(), 'children', '') ?>" <?php e($p->isActive(), 'aria-current="page"') ?> href="<?= $p->url() ?>">
        <?= $p->title()->html() ?>&nbsp;<span class="submenu-triangle" role="presentation"><?= ($p->hasChildren()) ? 'ˇ' : '' ?></span>
      </a>
      <?php if ($p->hasChildren() && $p->isOpen()) {
        snippet('treemenu', ['subpages' => $p->children()]);
      } ?>
    </li>
  <?php endforeach ?>
</ul>

I’ve looked at Do not show subpages in specific main menu item and the line that stands out to me as being relevant is:

<?php if ($children->isNotEmpty() && $item->is(page('products')) === false): ?>

I figure the line I need to modify is the following in site/snippets/treemenu.php:

<?php if (!isset($subpages)) $subpages = $site->pages() ?>

So I tried:

<?php if (!isset($subpages)) $subpages = $site->pages() && $section->template() != 'collection'; ?>

Doesn’t break anything, but doesn’t work either, I must be getting the syntax wrong.

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If it helps, this is my site structure:

Main page

• The Garden (article, submenu navigation turned on)
  • Garden blog (collection: where I post and content is ordered chronologically)
  • Formats (article, where content is sorted by format, has sub-pages)
  • Themes (article, where content is sorted thematically, has sub-pages)

Here are some screenshots to illustrate:

The tree menu is helpful for the other pages and their sub-pages, because I use it to organize my content:

However, where there is a collection, it becomes a problem.

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Thank you once again for any help!