woocommerce_order_status_completed not triggered

Question

I want to write a custom plugin that does some action after woocommerce order is completed, but I can't get this hook to work. I can see this question asked many times.

Like here: https://wordpress.stackexchange.com/questions/134463/woocommerce-order-status-completed-action-hook-not-working

Here: https://wordpress.org/support/topic/woocommerce_order_status_completed-is-not-working

And here: https://wordpress.org/support/topic/woocommerce_order_status_completed-action-hook-not-working

But I cannot help myself with answers that these guys received.

I tried to add the action a few different ways:

add_action( 'woocommerce_order_status_completed', 'ikwoocommerceorderstatuscompleted_func');

add_action( 'woocommerce_order_status_completed', array($this,'ikwoocommerceorderstatuscompleted_func'), 10, 1);

add_action( 'woocommerce_order_status_completed', array(&$this,'ikwoocommerceorderstatuscompleted_func'), 10, 1);

Also tried with a class:

class IKHooks {
    function __construct() {
        add_action( 'woocommerce_order_status_completed', array($this,'ikwoocommerceorderstatuscompleted_func'), 10, 1);
    }

    public function ikwoocommerceorderstatuscompleted_func( $order_id ) {

    }
}

I even tried to put the action outside of the class:

add_action( 'woocommerce_order_status_completed', array(IKHooks,'ikwoocommerceorderstatuscompleted_func'), 10, 1);

None of these examples work. :(

Answer 1

Check the following steps before calling your hook.

1. Check if order completion email is sent.

2. Hook is properly registered in plugin file or theme functions.php

add_action( 'woocommerce_order_status_completed','callback_function_name' );

function callback_function_name(){
  global $wp_filter;
  print_r($wp_filter);
  exit;
}

Check if the name of your callback function is in the hook array:

[woocommerce_order_status_completed] => Array
    (
        [10] => Array
            (
                [wc_paying_customer] => Array
                    (
                        [function] => wc_paying_customer
                        [accepted_args] => 1
                    )

                [wc_downloadable_product_permissions] => Array
                    (
                        [function] => wc_downloadable_product_permissions
                        [accepted_args] => 1
                    )

                [callback_function_name] => Array
                    (
                        [function] => callback_function_name
                        [accepted_args] => 3
                    )

            )

    )

If you find it then everything is ok, it means that probably there's an issue with your theme or functions.php file. Check for the hook or callback function in your files and then look for remove_action or remove_all_actions that's probably what's preventing your hook from being called.

You can also check in this way

add_action( 'woocommerce_order_status_completed', 'callback_function_name', 1);

Change the priority of your hook from 10 to 1 so it is called first than any other action or hook.