Query posts via Taxonomy field

• tanmccuin

• August 14, 2015 at 9:58 am

I have an ACF taxonomy field that gets multiple terms from a custom taxonomy. I’m attempting to get and list the posts assigned these terms. Seems logically accomplishable, but for some reason i’m missing the method.

I’ll break it down with an example:

• I have a page with a book on it. Moby Dick.
• I have a CPT called “Quotes”
• In this CPT i have a custom Tax called “Topics”- with (for instance) custom terms including “Whales” and “eyepatches”
• On the books’ edit page i have an ACF Taxonomy field set to the “Topics” custom Taxonomy. I select both the “Whales” and “eyepatches” tax terms (as they are relevant to Moby Dick.)
• I then have a query at the bottom of the Moby dick page, attempting to query the ACF Taxonomy selector, for those tax terms, and then using those tax terms, pull at random 5 posts from “quotes” CPT via those given custom Tax terms.

• magicstick

• August 14, 2015 at 7:34 pm

To get the tax terms for that page you can use this:
https://codex.wordpress.org/Function_Reference/get_the_terms

Then plug this into a get_posts

get_posts(array(
    'post_type' => 'quotes',
    'tax_query' => array(
        // get_the_terms() stuff.
    ),
    'order' => 'ASC',
    'posts_per_page' => 5,
    'orderby' => 'rand')
);
?>

Note: This is off the top of my head but I hope it sets you on the path to your answer 🙂

• John Huebner

• August 15, 2015 at 12:55 am

So what you need to do is get the ACF field, which will return an array of term IDs and use that array to do a WP_Query, similar to what magicstick posted.

For this you need to set the taxonomy field on the book edit page to return Term ID, if it’s returning Term Object it will be a bit more complicated.

$topics = get_field('topics');
if ($topics) {
  if (!is_array($topics)) {
    $topics = array($topics);
  }
  $args = array(
    'post_type' => 'quotes',
    'posts_per_page' => 5,
    'orderby' => 'rand',
    'tax_query' => array(
      array(
        'taxonomy' => 'topics',
        'terms' => $topics,
      ),
    ),
  );
  $quote_query = new WP_Query($args);
  if ($quote_query->have_posts()) {
    while($quote_query->have_posts()) {
      $quote_query->the_post();
      echo '<p>',get_the_content(),'</p>';
    }
  }
  wp_reset_postdata();
}

• tanmccuin

• August 15, 2015 at 5:04 am

This is great – thanks so much for the help. I was able to get things working with this assist!

• Martialmartz

• April 21, 2020 at 1:50 am

Hi,
i have a similar problem:

I have a custom post type with different taxonomies.

I want to check for a custom field within a site, which holds the taxonomy name from the custom posts. So i can enter the taxonomy in an ACF field on top of each site, and the loop should output all posts within that taxonomy i’ve entered. But it seems not to work, and my coding skills are poor…

“kategorie_eintragen” is my taxonomy ACF field for the sites, i’ve added these taxonomies before within my custom post type “touren”.

Here my code from the page template:

					<div class="videos">

						<?php 

						// get posts
						$kategorie = get_field('kategorie_eintragen');
						$posts = get_posts(array(
							'post_type'			=> 'touren',
							'posts_per_page'	=> -1,
							'post_status' 		=> 'publish',
							'orderby' 			=> 'date',
							'order'				=> 'ASC',
							'tax_query' => array(
								array(
									'taxonomy' => 'kategorie_eintragen',
									'terms' => $kategorie,
								)
							)
						));

						if( $posts ): ?>

							<?php foreach( $posts as $post ): 

								setup_postdata( $post ) ?>
						
								<article id="post-<?php the_ID(); ?>" class="post-<?php the_ID(); ?> post type-post status-publish format-standard">
								<a href="<?php the_field('link_zur_tour'); ?>">
								<div class="videos-title aktiv-bild">
									<?php 
									$image = get_field('bild_der_tour');
									$size = 'oberkategorien'; // (thumbnail, medium, large, full or custom size)
									if( $image ) {
										echo wp_get_attachment_image( $image, $size );
									} ?>
									<h2><?php the_field('titel_der_tour'); ?></h2>
								</div>
								</a>
								</article>
						
							<?php endforeach; ?>

							<?php wp_reset_postdata(); ?>

						<?php endif; ?>		
						
					</div>

How do i make the loop query these custom post types only within the taxonomy i gave him on the current site?

• Martialmartz

• April 21, 2020 at 8:13 pm

Nevermind, i’m dumb… solved it:

						$kategorie = get_field('kategorie_eintragen');
						$the_query = new WP_Query( array(
							'post_type'			=> 'touren',
							'posts_per_page'	=> -1,
							'post_status' 		=> 'publish',
							'orderby' 			=> 'date',
							'order'				=> 'ASC',
							'tax_query' => array(
								array(
									'taxonomy' => 'touren-categories',
									'field' => 'slug',
									'terms' => $kategorie
								)
							)
						));

• Matt Reeves

• June 2, 2021 at 1:27 am

Is there a way to display the results of this query separated by the taxonomy that you used in the acf field?

Taxonomy 1
-Post A1
-Post A2

Taxonomy 2
-Post B1
-Post B2

• Matt Reeves

• June 3, 2021 at 1:51 am

“Is there a way to display the results of this query separated by the taxonomy that you used in the acf field?”

NM, I figured it out

• niran00

• June 16, 2021 at 1:56 pm

What was the solution ? I am trying to do something similar.
Instead of subcategories displaying a “-” I want it to have the parent.

Example:

Taxonomy 1
– (Taxonomy 1) Post A1
– (Taxonomy 1) Post A2

Taxonomy 2
– (Taxonomy 2) Post B1
– (Taxonomy 2) Post B2

• bsric

• December 18, 2021 at 1:18 pm

Hi there — would you be able to post this snippet of code? I’m stuck on this exact same issue and at my wit’s end. Any help would be appreciated!