WP - WOO | Add custom field to shop_order Woocommerce Admin Order's List + Search #Wordpress #Woocommerce

add_column_with_custom_field_woocommerce_shop_order.php

<?php 

 /**
  * 
  * Add a new Column to shop_order 
  * admin list Woocommerce and show custom fields
  * add support to search custom field
  *
  * Use in functions.php 
  */

add_action( 'shop_order_manage_custom_column' , 'custom_order_list_column_content', 10, 2 );
function custom_order_list_column_content( $column, $post_id )
{

    // HERE get the data from your custom field (set the correct meta key below)
    $add_new_column_to_woocommerce = get_post_meta( $post_id, 'replace_with_custom_field', true );
    if( empty($add_new_column_to_woocommerce)) $add_new_column_to_woocommerce = '';

    switch ( $column )
    {
        case 'order_add_new_column_to_woocommerce' :
            echo '<span>'.$add_new_column_to_woocommerce.'</span>'; // display the data
            break;
    }
}

// MAKE 'add_new_column_to_woocommerce' METAKEY SEARCHABLE IN THE SHOP ORDERS LIST
// replace with your custom field
add_filter( 'woocommerce_shop_order_search_fields', 'add_new_column_to_woocommerce_search_fields', 10, 1 );
function add_new_column_to_woocommerce_search_fields( $meta_keys ){
    $meta_keys[] = 'replace_with_custom_field';
    return $meta_keys;
}

?>