Query categories on ACF Taxonomy

Question

I have created a custom field (taxonomy) on the category object, in order to categorize the categories, so to speak. But I don't know how to query categories based on this custom field.

My custom field is called "custom_parent" and the slug for the chosen value is "sport-fritid-parent".

Does anyone know what I'm doing wrong?

 $args = array(
 'tax_query' => array(
         array (
        'taxonomy' => 'custom_parent',
        'field' => 'slug',
        'terms' => 'sport-fritid-parent'
      )
    )
  );
  $c = get_categories($args);
  foreach($c as  $cat){
       echo $cat->name;

  }

Answer 1

To fetch terms of taxonomies( in your case category ) based on a custom field (or meta). You can use Meta Query

For your case: this code should work fine.

$args = [
   'meta_query' => [
      [
         'key'      => 'custom_parent',
         'value'    => 'sport-fritid-parent',
         'compare'  => '='
      ]
   ],
];

$c = get_categories($args);
foreach($c as  $cat){
    echo $cat->name;
}