Reply To: Get row index inside add_filter( 'acf/load_field' )

• 23creative

• August 31, 2021 at 12:39 am

I had a similar issue where i needed to add the ACF fields meta_id. Below is my solution to the same problem

function build_meta_key($field){
    // Loop over parents.
    $return_name = $field["_name"];

    if(empty($field["prefix"])){
        return $return_name;
    }

    $is_row = preg_match("/row-(\d)+/", $field["prefix"], $matches);

    if(!$is_row){
        return $return_name;
    }

    //now figure out the row number from the field name

    $return_name = $matches[1]."_".$return_name;
    
    while ( $field['parent'] && $field = acf_get_field( $field['parent'] ) ) {
        if(isset($field["_name"])){
            $return_name = $field["_name"]."_".$return_name;
        }
    }

    return $return_name;
}

function get_all_meta_info_by_key($post_id,  $meta_key, $meta_type = "post"){
	global $wpdb;
	if ( ! $meta_type || ! $post_id || trim($meta_key) == "") {
		return false;
	}

	$table = _get_meta_table( $meta_type );
	if ( ! $table ) {
		return false;
	}

	$meta = $wpdb->get_row( $wpdb->prepare("SELECT * FROM {$table} WHERE post_id = %d AND meta_key = %s", $post_id, $meta_key) );

	if ( empty( $meta ) ) {
		return false;
	}

	if ( isset( $meta->meta_value ) ) {
		$meta->meta_value = maybe_unserialize( $meta->meta_value );
	}

	return $meta;
}

/**
 * Add in the ACF fields meta id to the field itself. so we can build the download links
 * @param $field
 *
 * @return mixed
 */
function prepare_field( $field ) {
    global $post;

    $acf_meta_key = $this->build_meta_key($field);

    $meta_information = $this->get_all_meta_info_by_key($post->ID,  $acf_meta_key);

    if(!empty($meta_information->meta_id)){
        $field["post_meta_id"] = $meta_information->meta_id;
    }

    return $field;
}