ACF – getting fields in functions.php

• stangerup

• July 7, 2017 at 8:46 pm

Hi

Im trying to get a textfield from another post, into current post.

I’ve got a repeater field, with a post-object field(that returns postID) – this ID links to another post, where I got a text field (get_field(‘tekst’)).

get_field(‘tekst’) should then be copied to a text field on the current page (The field called “Meta Beskrivelse” – see attachment)

I got this code in functions.php – but no luck. Any ideas?

function my_acf_load_value( $value, $post_id, $field ) {
  global $post;
  $parentartikelID = $post->ID;

  $args = array( 'page_id' => $parentartikelID );
  $loop = new WP_Query($args);

  while ( have_posts() ) : the_post();

    if( have_rows('artikel') ):
        while ( have_rows('artikel') ) : the_row();
          $artikelID = get_field('artikel_navn');

          $argssub = array('pagename' => $artikelID );
          $loop = new WP_Query( $argssub );

          while ( $loop->have_posts() ) : $loop->the_post();
            $value = get_field('tekst');
          endwhile;

        endwhile;
      endif;
    endwhile;

return $value;
}
add_filter('acf/update_value/name=meta_beskrivelse', 'my_acf_load_value', 10, 3);

acf-meta.jpg.jpg

• John Huebner

• July 10, 2017 at 12:02 am

function my_acf_load_value($value, $post_id, $field) {
  // current post id is passed, no need to figure it out
  if (have_rows('artikel', $post_id)) {
    // set up an array to hold values
    // this is becuase a repeater field could have many
    // and will make it easier to concatinate them
    $values = array();
    while (have_rows('artikel', $post_id)) {
      // get value of sub field without formatting
      // so that it will be the ID of the post object
      $post_object_id = get_sub_field('artikel_navn', false);
      // get the field value from the related post object
      // and add to the array
      $values[] = get_field('tekst', $post_object_id);
    } // end while have rows
    // after the loop, implode the values
    $value = implode(', ', $values);
  } // end if have rows

  return $value;
}
add_filter('acf/update_value/name=meta_beskrivelse', 'my_acf_load_value', 10, 3);

• stangerup

• July 10, 2017 at 10:55 pm

Hi John

Thank you so much for your time and effort.

I’m getting a time-out. I think it is pulling to many posts.
Thought about adding a query (the page is a custom post type), but now i’m getting an error message.

Warning: htmlspecialchars() expects parameter 1 to be string, object given

function my_acf_load_value($value, $post_id, $field) {
$query = new WP_Query( array( 'post_type' => 'artikler', 'posts_per_page' => 1, ) );
return $query;

  if ($query->have_rows('artikel', $post_id)) {
    while ($query->have_rows('artikel', $post_id)) {
      $post_object_id = get_sub_field('artikel_navn', false);
      $values = get_field('tekst', $post_object_id);
    }
    $value = implode(', ', $values);
  }
  return $value;
}
add_filter('acf/update_value/name=meta_beskrivelse', 'my_acf_load_value', 10, 3);

• John Huebner

• July 10, 2017 at 11:21 pm

Well, that’s because I forgot something important

while ($query->have_rows('artikel', $post_id)) {
  the_row(); // I forgot this

• stangerup

• July 12, 2017 at 9:31 pm

Thank you so much, John – you are a star! It works 🙂