Show section only on first page AND only if no filter is active

The CMS Questions
1

I display a large number of images divided on several pages using pagination. Additionally, the images can be filtered using tags.

Now I want to display a section with a randomly selected background image above the list of images. But only on the first page and only if no filter is active.

I have managed that the section is only displayed on the first page:

 <?php if ($pagination->isFirstPage()) : ?>
    <?php $imageUrl = ($image = page('archive')->children()->images()->filterBy('orientation', 'landscape')->shuffle()->first()) ? $image->url() : ''; ?>
    <section class="cover" style="background-image: url(<?= $imageUrl ?>)">

      ...

    </section>
  <?php endif ?>

How can I now also integrate the second condition, i.e. show the section only when no filter is active?

2

what do you use for filtering? Parameters or query string.

For example, if you use a parameter called tag, you would get this parameter with

$tag = param('tag');

Now when such a filter is active, this would return a string with a value. If it is not present, this variable will be null. So you can check that.

3

Exactly, I use a parameter called “tag” to filter. Therefore it is surely exactly the right way to check if the variable is null.

Due to lack of PHP knowledge, I simply don’t know how to integrate this into the if ($pagination->isFirstPage()) loop I’m currently already using…

4 
 <?php if ($pagination->isFirstPage() && is_null(param('tag'))) : ?>
5

Awesome, thank you!