Force update of “Bidirectional”

• brambil

• July 10, 2025 at 7:27 am

Hi.
This is my Scenario:
Custom Post Type “A”: has many ACF Fields, 1 of them is “Related to…”
Custom Post Type “B”: has not so many ACF Fields, 1 of them is “This A are related to me”.
I have just modified an ACF Field in “A” from Relationship to Relationship with Bidirectional that puts the relationship in the proper value of B.

Now I need to open all “A” make a change in the relationship to enforce the update and add all the Relationship.

“A” posts are >1000 so I’m looking if is possible do it in an automatic way …
Just enforce an “update” in not enough…

This code, doesn’t work.

<?php
include 'wp-load.php';
print '<xmp>';
$post_type   = 'MY_POST_TYPE A';
$acf_field   = 'ACF_FIELD_OF_A_HAS_RELATIONSHIP';
$batch_size  = 200;
set_time_limit(0);

$offset = 0;
$total  = 0;

do {
    $spots = get_posts([
        'post_type'      => $post_type,
        'post_status'    => 'any',
        'posts_per_page' => $batch_size,
        'offset'         => $offset,
        'fields'         => 'ids',
        'orderby'        => 'ID',
        'order'          => 'ASC',
        'no_found_rows'  => true,
    ]);

    foreach ($spots as $spot_id) {
        $value = get_field($acf_field, $spot_id);

        update_field($acf_field, $value, $spot_id);

        $total++;
        echo " • Post ID {$spot_id} \n";
    }

    $offset += $batch_size;
} while (!empty($spots));

echo "\n {$total} posts done.\n";

Maybe to trigger bidirectional update there is something special to do?

• brambil

• July 10, 2025 at 7:35 am

SOLVED.

<?php
include 'wp-load.php';
print '<xmp>';
$post_type   = 'MY_POST_TYPE';
$acf_field   = 'ACF_FIELD_HAS_RELATIONSHIP';
$batch_size  = 200;
set_time_limit(0);

$offset = 0;
$total  = 0;

do {
    $spots = get_posts([
        'post_type'      => $post_type,
        'post_status'    => 'any',
        'posts_per_page' => $batch_size,
        'offset'         => $offset,
        'fields'         => 'ids',
        'orderby'        => 'ID',
        'order'          => 'ASC',
        'no_found_rows'  => true,
    ]);

    foreach ($spots as $spot_id) {

         // 1) Leggi il valore corrente (formato “raw” → third param FALSE)
         $value = get_field($acf_field, $spot_id, false);

         // Se è vuoto non serve forzare nulla
         if ($value === null || $value === '' || $value === []) {
             echo " • Post {$spot_id}: empty, go on\n";
             continue;
         }

         // 2) Svuota il campo TEMPORANEAMENTE
         delete_field($acf_field, $spot_id);      // rimuove sia meta che cache
         // oppure: update_field($acf_field, null, $spot_id);

         // 3) Riscrivi il valore originale ⇒ trigger completo degli hook
         update_field($acf_field, $value, $spot_id);

         $total++;
         echo " • Post {$spot_id}: update \n";
     }
    $offset += $batch_size;
} while (!empty($spots));

echo "\n {$total} posts done.\n";