Post Thumbnail

If you need to modify the post thumbnail of the theme to set programatically the one from the slots you could use this code:

add_filter('post_thumbnail_html', 'use_external_featured_image', 10, 3);

function use_external_featured_image($html, $post_id, $post_thumbnail_id) {

// Only apply to slotsl post type
if (get_post_type($post_id) !== 'slotsl') {
return $html;
}

// If featured image already exists, keep it
if (!empty($html)) {
return $html;
}

// Get your external image URL
$external_url = slotsl_img_url();

if (empty($external_url)) {
return $html;
}

// Build image manually
$alt = esc_attr(get_the_title($post_id));

return sprintf(
'<img src="%s" alt="%s" class="wp-post-image external-slotsl-image" loading="lazy">',
esc_url($external_url),
$alt
);
}