Author is Aleš Sýkora
Updated: 30. 9. 2022, Added: 27. 9. 2022
Use first ACF Gallery image as Featured image of Custom post type single
How do I set the first gallery image from a custom post type gallery field as the featured image? Found this here: Use first image from gallery of custom post type to set featured image - ACF Support (advancedcustomfields.com)
It use ACF | acf/save_post (advancedcustomfields.com) filter to apply.
add_action('acf/save_post', 'flex_FeaturedImageSetByACF', 50);
function flex_FeaturedImageSetByACF() {
$current_screen = get_current_screen(); // Current admin screen needed to identify the current cpt
$current_cpt_name = 'models'; // Current cpt name
$current_cpt_support = 'thumbnail'; // We want to check if the CPT supports this feature
global $post;
$post_id = ( $post->ID ); // Current post ID
$post_gallery_field = get_field('model_gallery', $post_id ); // ACF field
if ( !empty( $post_id ) ) {
if ( isset( $post_gallery_field['0'] ) ) {
$post_image_id = $post_gallery_field['0']['id']; // ACF image filed ID
$post_image_url = $post_gallery_field['0']['url']; // ACF image filed URL
// If current cpt supports thumbnails/featured images
if ( post_type_supports( $current_cpt_name, $current_cpt_support ) ) {
if ( ( $post_image_url ) AND ( ( $post_image_url ) != ( get_the_post_thumbnail() ) ) ) {
update_post_meta($post_id, '_thumbnail_id', $post_image_id);
}
}
} else {
update_post_meta( $post_id, '_thumbnail_id', 0 );
}
}
}
This is amazing thank you!
I'm using the ACF gallery on woocommerce products.
Can you advise How can I set the first ACG gallery image as the featured image of the product
hello Simon,
did you tried just change the slug of post type to product and use this code?
Or you can try this: HOW TO USE ACF FIELDS FOR WOOCOMMERCE PRODUCT PHOTOS