Reply To: Custom Post Type: Order posts by a group's field at archive page

• dgaitan

• October 3, 2018 at 6:47 pm

This should work with something like:

$args = array(
        'post_type' => 'your_custom_post_type',
        'meta_key'=> 'your_field_date',
        'orderby' => 'meta_value',
        'order' => 'ASC' 
    );

If you’re are working with the archive page, maybe a best way to do it is modify the main query with the pre_get_posts hook.

For Example:

// in your functions.php
function sort_by_date_my_cpt( $query ) {
   if ( is_post_type_archive( 'your_custom_post_type') ) {
      $query->set('meta_key', 'your_date_custom_field');
      $query->set('orderby', 'meta_value');
      $query->set('order', 'ASC');
      return;
   }
}
add_filter( 'pre_get_posts', 'sort_by_date_my_cpt', 1);

So then, you will to use your WP Loop by default in your archive template.

// in your archive-your_custom_posttype.php or archive.php
<?php if ( have_posts() ) :
   <?php while ( have_posts() ) : the_post(); ?>
   <?php endwhile; ?>
<?php endif; ?>