WP_Query using ACF Taxonomy Category

• aaron4osu

• December 12, 2020 at 1:36 am

I’m trying to create a WP_Query loop with a custom post type of project and using ACF Taxonomy field to filter just those categories. I found in this forum an example, but it’s not working.

plus I think I need to add something for if there is only 1 category selected rather than multiple.

The loop is working without the taxonomy arg. I think I’m pretty close, but nothing shows when I add in the taxonomy arg.

here is what I have:

// this field can return either a single category or multiple
$categories = get_field('project_slider_category');
if ($categories) {
  if (!is_array($categories)) {
    $categories = array($categories);
  }
}

$args = array(  
    'post_type' => 'project',
    'post_status' => 'publish',
    'posts_per_page' => 8, 
    'orderby' => 'title', 
    'order' => 'ASC',
    'tax_query' => array(
      array(
        'taxonomy' => 'categories',
        'terms' => $categories,
      ),
    ), 
);

$loop = new WP_Query( $args );

I attached a screenshots with my ACF settings and showing what is selected in my example.

Screen-Shot-....png

Screen-Shot-....png

• John Huebner

• December 14, 2020 at 2:18 am

I really do not see anything seriously wrong, the only thing I can think of is that you either have the wrong taxonomy name or that the values your trying to use in the query are not integers

// this field can return either a single category or multiple
// ensure that you are only getting the ID values of the terms and not term objects
$categories = get_field('project_slider_category', false, false);
if ($categories) {
  if (!is_array($categories)) {
    $categories = array($categories);
  }
  // make sure all values are integers
  $categories = array_map('intval', $categories);
}

$args = array(  
    'post_type' => 'project',
    'post_status' => 'publish',
    'posts_per_page' => 8, 
    'orderby' => 'title', 
    'order' => 'ASC',
    'tax_query' => array(
      array(
        // make sure the category name is "categories"
        'taxonomy' => 'categories',
        'terms' => $categories
      ),
    ), 
);

$loop = new WP_Query( $args );