ACF exclude current post from post object

index.php

<?php
namespace Utkarsh\acf;

/**
 * Exclude current post from ACF filter.
 * Add param include_current_post => true in ACF field if you need include current post. Defaults to exclude.
 *
 * @param array $args    WP_Query args.
 * @param array $field   ACF field params.
 * @param int   $post_id current post id.
 *
 * @return mixed
 */
function acf_filter_posts( $args, $field, $post_id ) {
	if ( isset( $field['include_current_post'] ) || ! empty( $field['include_current_post'] ) ) {
		return $args;
	}
	$post_type = get_post_type( $post_id );
	if ( ! isset( $args['post_type'] ) || ! in_array( $post_type, $args['post_type'], true ) ) {
		return $args;
	}
	$args['post__not_in'] = [ $post_id ]; // Poor query.

	return $args;
}

add_filter( 'acf/fields/post_object/query', __NAMESPACE__ . '\\acf_filter_posts', 10, 3 );
add_filter( 'acf/fields/relationship/query', __NAMESPACE__ . '\\acf_filter_posts', 10, 3 );