I figured this out. It’s quite a hack, but here it is if it can help someone down the road. I ended up pulling all the sermon series, querying the sermon series and the service type. Then listed the first sermon in each series, but in the loop I only actually get the sermon series image and link.
<ul class="series-campus-list">
<?php
$custom_terms = get_terms('wpfc_sermon_series', 'wpfc_service_type');
foreach($custom_terms as $custom_term) {
wp_reset_query();
$args = array(
'post_type' => 'wpfc_sermon',
'showposts'=>1,
'tax_query' => array(
'relation' => 'AND',
array(
'taxonomy' => 'wpfc_sermon_series',
'terms' => $custom_term->slug,
'field' => 'slug',
),
array(
'taxonomy' => 'wpfc_service_type',
'terms' => array(''), // set location here
'field' => 'slug',
),
),
);
$loop = new WP_Query($args);
if($loop->have_posts()) {
while($loop->have_posts()) : $loop->the_post();
echo '<li><a href="/sermons/series/' . $custom_term->slug .'">';
echo render_sermon_image('aspect-ratio');
echo '</a></li>';
endwhile;
}
}
?>
</ul>
