Dynamically populate a select field’s choices for Custom Post Types— ACF

Jun 8, 2025

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Adding the dynamic select field choices in Advanced Custom Fields can be challenging, as ACF does not offer this feature by default. In this blog, we will discuss to do just that.

namespace YouNameSpace;
function load_post_type_choices( $field ) {

   $choices               = [];
   $post_types            = get_post_types( [
      'public'  => true,
      'show_ui' => true,
   ] );
   $post_types_to_exclude = [ 'attachment', 'page' ];

   foreach ( $post_types as $post_type => $slug ) {
      if ( ! in_array( $slug, $post_types_to_exclude, true ) ) {
         $choices[ $slug ] = ucfirst( $post_type );
      }
   }

   $field['choices']       = $choices;
   $field['default_value'] = 'post';

   return $field;
}

add_filter( 'acf/load_field/name=post_type_selection', __NAMESPACE__ . '\\load_post_type_choices' );

Now let’s write the PHP code as described above. Notice that, we have added our field name in the acf/load_field hook as `acf/load_field/name=post_type_selection`

Now we can see post types in the dropdown.