Reply To: Displaying a relationship field on a custom post type taxonomy page

• rise

• October 29, 2014 at 1:42 am

I’m having the same exact problem you have but on my archive-custom-post-type.php page with Advanced Custom Fields Pro latest version.

This is the code i’m using:

<section id="debates-home">
	<?php 
	
	$the_query = new WP_Query( array( 'post_type' => 'debate' , 'orderby' => 'date', 'posts_per_page' => 2 ) ); 
	if ( $the_query->have_posts() ) : while ( $the_query->have_posts() ) : $the_query->the_post();  
	
	$term = wp_get_post_terms($post->ID, 'area', array("fields" => "names"));
	$term_slug = wp_get_post_terms($post->ID, 'area', array("fields" => "slugs"));
	
	?>
	
	<article>
		<?php the_post_thumbnail(); ?>
		<div class="info-debate">
			<a class="category-link" href="<?php echo get_site_url(); ?>/area/<?php echo $term_slug[0] ?>/?post_type=debate"><?php echo $term[0]; ?></a>
			<h3><a href="<?php the_permalink(); ?>" title="Ver debate: <?php the_title(); ?>"><?php the_title(); ?></a></h3>
		
			<?php 
			
			$posts = get_field('columnas_del_debate');
			
			if( $posts ): ?>
			    <ul>
			    <?php foreach( $posts as $post): ?>
			        <?php setup_postdata($post); ?>
			        <li>
			            <a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>"><?php the_post_thumbnail('thumb'); ?></a>
			            <span class="tooltip">
			            	<em><?php the_title(); ?></em><br> <?php the_field('autor_de_columna'); ?>
			            </span>
			        </li>
			    <?php endforeach; ?>
			    </ul>
			    <?php wp_reset_postdata(); ?>
			<?php endif; ?>
								
		</div>
	</article>
	
	<?php endwhile; ?>
		
		<?php wp_reset_postdata(); ?>
	
	<?php else : ?>
		<p><?php _e( 'Sorry, no posts matched your criteria.' ); ?></p>
	<?php endif; ?>			
</section>

The code works fine on my index.php and will break on archive-custom-post-type.php page. The only difference in the code on the archive page is that the loop is just the plain version with no args since I don’t need to modify the loop.

If turn wp_debug on i’ll see the following error on my index.php:

Notice: Trying to get property of non-object in /wp-includes/query.php on line 4618

Notice: Trying to get property of non-object in /wp-includes/query.php on line 4620

Notice: Trying to get property of non-object in /wp-includes/query.php on line 4622

Notice: Trying to get property of non-object in /wp-includes/query.php on line 4623

Notice: Trying to get property of non-object in /wp-includes/query.php on line 4631

Notice: Trying to get property of non-object in /wp-includes/query.php on line 4646

I tried what Elliot said before and ACF seems to be working fine cause the array with the related posts appears within the print_r.

Is there a way to use setup_postdata inside the loop on an archive-custom-post-type.php page?

Thanks!

PD: I lost my old forum account, dont know why? Was the forum reset or something?