query – iNexi

It’s documented, it’s used, but it wasn’t obvious to me. After hunting around, I finally found what I needed in the first place I looked: the WordPress Codex.

This is the wp_query argument needed to display posts assigned a particular term:

'tax_query' =&gt; array(array(
			'taxonomy' =&gt; 'site-categories',
			'field' =&gt; 'slug',
			'terms' =&gt; 'telephony'
		    )
	        )

'tax_query' => array(array(

'taxonomy' => 'site-categories',

'field' => 'slug',

'terms' => 'telephony'

)

Using the term ID as a cat ID wasn’t working. I came across the above here, and used it in two simple loops to display the custom posts under category headers.

An error has occurred. Please try again later.

Want to display posts in a nested hierarchy? This goal led me to what is probably a cleaner solution. The following code is adapted from Hierarchical Category List with Post Titles, and blended with the code above.

function my_custom_post_type_terms() {
	global $wp_query,$paged,$post;
	$temp = $wp_query;
	$wp_query= null;
	ob_start();
	$args = array(
			'orderby' => 'name',
 	 		'order' => 'ASC',
 	 		'taxonomy' => 'custom-taxonomony-slug'
 			);
	$categories = get_categories($args);
  	foreach($categories as $category) :
  		if (!$category->parent) { ?>
  			<h2 class="title"><?php echo $category->name; ?></h2>
  			<?php process_cat_tree($category->term_id);
  		}
  	endforeach;
	$wp_query = null; 
	$wp_query = $temp;
	$content = ob_get_contents();
	ob_end_clean();
	return $content;
}
function process_cat_tree($cat) {
	global $wp_query,$paged,$post;
	$args = array('tax_query' => array(
		array(
			'taxonomy' => 'custom-taxonomony-slug',
			'field' => 'id',
			'terms' => $cat,
			'include_children' => false
		)
	), 'numberposts' => -1, 'orderby' => 'name', 'order' => 'ASC');
	$wp_query = new WP_Query($args); ?>
	<ul class="sites-list">
	<?php while ($wp_query->have_posts()) : $wp_query->the_post(); ?>
              <li>
                   <p><a href="<?php the_permalink(); ?>"><?php echo the_title(); ?></a></p>
                   <?php the_content(); ?>
               </li>
	<?php endwhile; ?>
	</ul>
	
	<?php $next = get_categories(array(
 	 		'taxonomy' => 'custom-taxonomony-slug',
 	 		'parent' => $cat));
	if($next) :
		foreach( $next as $category ) : ?>
			<h3 class="sub-cat-title"><?php echo $category->name; ?></h3>
 			<?php process_cat_tree( $category->term_id );
 		endforeach;
 	endif;
}

function my_custom_post_type_terms() {

global $wp_query,$paged,$post;

$temp = $wp_query;

$wp_query= null;

ob_start();

$args = array(

'orderby' => 'name',

'order' => 'ASC',

'taxonomy' => 'custom-taxonomony-slug'

);

$categories = get_categories($args);

foreach($categories as $category) :

if (!$category->parent) { ?>

<?php process_cat_tree($category->term_id);

}

endforeach;

$wp_query = null;

$wp_query = $temp;

$content = ob_get_contents();

ob_end_clean();

return $content;

}

function process_cat_tree($cat) {

global $wp_query,$paged,$post;

$args = array('tax_query' => array(

array(

'taxonomy' => 'custom-taxonomony-slug',

'field' => 'id',

'terms' => $cat,

'include_children' => false

)

), 'numberposts' => -1, 'orderby' => 'name', 'order' => 'ASC');

$wp_query = new WP_Query($args); ?>

<?php while ($wp_query->have_posts()) : $wp_query->the_post(); ?>

<li>

<?php the_content(); ?>

</li>

<?php endwhile; ?>

</ul>

<?php $next = get_categories(array(

'taxonomy' => 'custom-taxonomony-slug',

'parent' => $cat));

if($next) :

foreach( $next as $category ) : ?>

<?php process_cat_tree( $category->term_id );

endforeach;

endif;

}

It’s in action here under Sites…

Tag: query

Displaying Custom Post Types by Term