Reply To: Group CPT in years by using ACF date field

• Chris Capisce

• November 22, 2023 at 2:38 pm

Thank you very much @hube2. I was able to solve it by getting rid of strtotime() all together.. For reference here my code:

<?php
// Retrieve the list of posts from your CPT 'accreditations' with ACF fields 'description' and 'date'
$posts = get_posts(array(
    'post_type' => 'accreditaties',
    'posts_per_page' => -1,
));

// Create an associative array to group posts by year
$groupedPosts = array();

// Iterate through the list of posts and assign each post to the corresponding year
foreach ($posts as $post) {
    $date = get_field('acc_aanvangsdatum', $post->ID);
    $parsedDate = DateTime::createFromFormat('d/m/Y', $date);
    $year = $parsedDate->format('Y');

    if (!isset($groupedPosts[$year])) {
        $groupedPosts[$year] = array();
    }

    $groupedPosts[$year][] = $post;
}

// Sort the grouped posts by year in descending order
krsort($groupedPosts);

// Iterate through the grouped posts and generate the HTML markup for each year's section
foreach ($groupedPosts as $year => $posts) {
    echo '<button class="accordion"><h4>' . $year . '</h4></button>';
    echo '<div class="panel accreditaties">'; 
    ?>

    <div class="grid-container">
        <div class="grid-item" id="grid-item-title"><p>Aanvangsdatum</p></div>
        <div class="grid-item" id="grid-item-title"><p>Titel</p></div>
        <div class="grid-item" id="grid-item-title"><p>Status</p></div>
        <div class="grid-item" id="grid-item-title"><p align="right">Uren</p></div>

        <?php
        // Sort the posts within each year section by date in descending order
        usort($posts, function($a, $b) {
            $dateA = DateTime::createFromFormat('d/m/Y', get_field('acc_aanvangsdatum', $a->ID));
            $dateB = DateTime::createFromFormat('d/m/Y', get_field('acc_aanvangsdatum', $b->ID));
            return $dateB <=> $dateA;
        });

        foreach ($posts as $post) {
            $title = get_the_title($post->ID);
            $acc_aanvangsdatum = get_field('acc_aanvangsdatum', $post->ID);
            $acc_status = get_field('acc_status', $post->ID);
            $acc_uren = get_field('acc_uren', $post->ID);
            $acc_beschrijving = get_field('acc_beschrijving', $post->ID);
            ?>

            <div class="grid-item"><p><?php echo $acc_aanvangsdatum ?></p></div>
            <div class="grid-item"><p><a href="<?php echo get_permalink($post->ID); ?>"><?php echo $title ?></a></p></div>
            <div class="grid-item status"><p><?php echo $acc_status ?></p></div>
            <div class="grid-item uren"><p align="right"><?php echo $acc_uren ?></p></div>

            <?php
        }
        echo '</div>'; // Close the grid-container
        echo '</div>'; // Close the panel for the current year
    }
    ?>

<script>
  var years = document.getElementsByClassName("year");
  var i;

  for (i = 0; i < years.length; i++) {
    years[i].addEventListener("click", function() {
      var posts = this.nextElementSibling;
      if (posts.style.display === "block") {
        posts.style.display = "none";
      } else {
        posts.style.display = "block";
      }
    });
  }
</script>
<style>
.grid-container {
  	display: grid;
  	grid-template-columns: 17% auto 16% 5%;
	grid-column-gap: 0.5em;
}
.grid-item {
  border: 0px solid black;
  padding: 0em;
}
.grid-items-status-uren {
    display: contents;
}
</style>