Flexible content field. Global post variable in field "Relationship".

[Danil-Klimov]

Describe the bug I am using a flexible content field. In this field I use relationship field. When i display this field in the frontend, the global variable ($post) is not set. Instead of the post title, the title of the current page is displayed for the entire set of posts.

To Reproduce

• created the flexible content field
• added a new section for posts loop inside the flexible content field
• wrote the template file path to be able to render it

Expected behavior Posts displaying properly.

Screenshots

<?php $products = get_sub_field('products'); ?>
<?php if($products) : ?>
  <?php foreach ($products as $post) : setup_postdata($post); ?>
    <p><?php the_title(); ?></p>
  <?php endforeach; wp_reset_postdata(); ?>
<?php endif; ?>

WordPress & ACF WordPress version: 6.0 ACF Pro version: 5.12.2 ACF add-ons: ACF Extended 0.8.8.6

[acf-extended]

Hello,

Thanks for the feedback, and sorry for the late answer.

When using the Flexible Content Dynamic Render/Preview, you're rendering your layout template from a function: the_flexible().

In order to use the wp $post variable (used by setup_postdata() & wp_reset_postdata()), you have to add a global $post in your PHP code, so it is scoped inside the function. Usage example:

<?php 
global $post;
$products = get_sub_field('products'); ?>
<?php if($products) : ?>
    <?php foreach ($products as $post) : setup_postdata($post); ?>
        <p><?php the_title(); ?></p>
    <?php endforeach; wp_reset_postdata(); ?>
<?php endif; ?>

To avoid using that global $post, you could generate a new WP_Query() using the sub field value post ids, as $query->the_post() already does the global $post. Usage example:

<?php 
// use format_value = false to only get post ids
$products = get_sub_field('products', false); ?>

<?php
$query = new WP_Query(array(
    'post_type' => 'any',
    'post__in'  => $products,
    'orderby'   => 'post__in',
    'nopaging'  => true,
));
?>

<?php if($query->have_posts()): ?>
    <?php while($query->have_posts()): $query->the_post(); ?>
        <p><?php the_title(); ?></p>
    <?php endwhile; wp_reset_postdata(); ?>
<?php endif; ?>

Hope it helps!

Have a nice day!

Regards.