Process custom bulk action on admin Orders list in Woocommerce - php

Question

I have added a custom action in my woocommerce orders page like shown below, and I also have a custom order field "number of meals". Now what I want is when I select the orders in bulk and use that custom action then count of number of meals should get decreased by 1.
For example if order id 1 & 2 had 15 & 12 number of meals respectively then after using the action it should become 14 & 11…
The screenshot of my orders page, the custom hook and the custom order field I created:
My code:
add_filter( 'bulk_actions-edit-shop_order', 'decrease_number_of_meals_by_1' );
function decrease_number_of_meals_by_1( $bulk_actions ) {
$bulk_actions['decrease_number_of_meals'] = 'Decrease Number of Meals by 1';
return $bulk_actions;
}
add_action( 'admin_action_decrease_number_of_meals', 'fire_my_hook' );
function fire_my_hook() {
if( !isset( $_REQUEST['post'] ) && !is_array( $_REQUEST['post'] ) )
return;
foreach( $_REQUEST['post'] as $order_id ) {
$order = new WC_Order( $order_id );
$no_of_meals = $order->get_post_meta( $order_id, '_wc_acof_{3}', true );
}
}
I am stuck here and have no idea on how to do it further.
Please guide me on how can I achieve this.

Answer 1

You are not using the right way and hooks. Also the right custom field meta key should be _wc_acof_3 when using WooCommerce Admin Custom Order Fields plugin.
So try the following instead:
// Add a bulk action to Orders bulk actions dropdown
add_filter( 'bulk_actions-edit-shop_order', 'decrease_meals_orders_bulk_actions' );
function decrease_meals_orders_bulk_actions( $bulk_actions ) {
$bulk_actions['decrease_meals'] = 'Decrease Number of Meals by 1';
return $bulk_actions;
}
// Process the bulk action from selected orders
add_filter( 'handle_bulk_actions-edit-shop_order', 'decrease_meals_bulk_action_edit_shop_order', 10, 3 );
function decrease_meals_bulk_action_edit_shop_order( $redirect_to, $action, $post_ids ) {
if ( $action === 'decrease_meals' ){
$processed_ids = array(); // Initializing
foreach ( $post_ids as $post_id ) {
// Get number of meals
$nb_meal = (int) get_post_meta( $post_id, '_wc_acof_3', true );
// Save the decreased number of meals ($meals - 1)
update_post_meta( $post_id, '_wc_acof_3', $nb_meal - 1 );
$processed_ids[] = $post_id; // Adding processed order IDs to an array
}
// Adding the right query vars to the returned URL
$redirect_to = add_query_arg( array(
'decrease_meals' => '1',
'processed_count' => count( $processed_ids ),
'processed_ids' => implode( ',', $processed_ids ),
), $redirect_to );
}
return $redirect_to;
}
// Display the results notice from bulk action on orders
add_action( 'admin_notices', 'decrease_meals_bulk_action_admin_notice' );
function decrease_meals_bulk_action_admin_notice() {
global $pagenow;
if ( 'edit.php' === $pagenow && isset($_GET['post_type'])
&& 'shop_order' === $_GET['post_type'] && isset($_GET['decrease_meals']) {
$count = intval( $_REQUEST['processed_count'] );
printf( '<div class="notice notice-success fade is-dismissible"><p>' .
_n( 'Decreased meals for %s Order.',
'Decreased meals for %s Orders.',
$count,
'woocommerce'
) . '</p></div>', $count );
}
Code goes in function.php file of your active child theme (or active theme). Tested and works.