Is there a way to set the first image in a gallery as the featured image for the post?
There is an example here of doing this with an image field https://support.advancedcustomfields.com/forums/topic/set-image-as-featured-image/ the difference is that you’d need to get the first image form the gallery instead of using the value of an image field.
I found another post with the solution.
add_action( 'save_post', 'set_featured_image_from_gallery' );
function set_featured_image_from_gallery() {
$has_thumbnail = get_the_post_thumbnail($post->ID);
if ( !$has_thumbnail ) {
$images = get_field('car_gallery', false, false);
$image_id = $images[0];
if ( $image_id ) {
set_post_thumbnail( $post->ID, $image_id );
}
}
}
Figured it out?
<?php echo $gallery[0]['url'] ?>
Another question, how do I remove the first image from the gallery, I get the first image repeating itself.
<?php if ( have_rows('apartamento_1_alcoba') ): ?>
<div id="img-module-slider-1" class="vivienda-slider">
<?php while( have_rows('apartamento_1_alcoba') ) : the_row();
$icono_1_alcoba = get_sub_field('icono');
$gallery = get_sub_field('lightbox');
$id_1_alcoba = get_sub_field('plano_id');
?>
<section data-featherlight-gallery data-feather-filter="a">
<a class="apt-gallery-<?php echo $id_1_alcoba ?>" href="<?php echo $gallery[0]['url'] ?>">
<img class="module-img-size" src="<?php echo $icono_1_alcoba['url'] ?>" alt="<?php echo $icono_1_alcoba['alt'] ?>">
</a>
<?php if ( $gallery ): ?>
<?php foreach ( $gallery as $image ): ?>
<a class="apt-gallery-<?php echo $id_1_alcoba ?>" href="<?php echo $image['url'] ?>" alt="<?php echo $image['alt']?>"></a>
<?php endforeach; ?>
<?php endif; ?>
</section>
<?php endwhile; ?>
</div>
<?php endif; ?>
$gallery = get_sub_field('lightbox');
// later on
// remove the first one
$toss_the_first_one = array_shift($gallery);
http://php.net/manual/en/function.array-shift.php
My them is Avada and, for post submission my them accept multiple featured images to build slider. I created a form to user submit post front-end. For it, I created a gallery field with ACF and user can upload their post featured images in gallery field. My problem is, I can not map uploaded images of ACF gallery field to featured images of user created post. is it possible to help me?
