trigger function in custom class on WooCommerce action - php

Question

I am using the following class to have a directory created with dynamic value - based on a woo custom checkout field. Works perfect on page refresh and directory is created like expected.
just need this to only trigger/instantiate on the WooCommerce actions
woocommerce_order_status_completed
or
woocommerce_order_status_changed
or
woocommerce_thankyou_page
how can this be done so that it does not always run every time a page is loaded to decrease the load and have better efficiency in general.
here is the complete class
//add_action( 'plugins_loaded', array( 'pos__URL', 'init' )); //uncomment to trigger on page refresh
class pos__URL {
public static function init() {
$POS__sys_URL = __CLASS__;
new $POS__sys_URL;
}
public function __construct()
{
add_action('init', array($this, 'pos__URL_Field'));
}
public function pos__URL_Field()
{
//--------to access the value----start-----
$orders = wc_get_orders(array(
'customer_id' => get_current_user_id(),
'return' => 'ids',
));
//add the id of the custom meta field that lies in the order
$meta_data = array();
foreach ($orders as $order_id) {
$meta_data[$order_id] = get_post_meta($order_id, '_engx_text_field_id', true);
}
//--------to access the value----end-----
if( isset($meta_data[$order_id]) ) { //is the field set
$curdir = getcwd(); //delcare variables
if (!file_exists($meta_data[$order_id])) {
if( mkdir( $curdir . "/" . $meta_data[$order_id], 0777) ) {
//below section for for testing purposes to see if the command ran - and yes shows correctly and creates directory as expected IF the POS url is set - (triggers at the moment on page refresh)
echo "directory created"; //comment out when done testing
}else{
echo "directory NOT created"; //comment out when done testing
}
}
}else{
if( empty($meta_data[$order_id]) ) {
//do nothing
}
}
}
} //end function
I have tried the following to set the action on the inside of class but I am not doing it right and it didn't work
class pos__URL
{
public function init()
{
add_action( 'woocommerce_order_status_changed', array('pos__URL') );
}
public function __construct()
{
add_action('init', array($this, 'pos__URL_Field'));
}
public function pos__URL_Field()
{
//--------to access the value----start-----
$orders = wc_get_orders(array(
'customer_id' => get_current_user_id(),
'return' => 'ids',
));
//add the id of the custom meta field that lies in the order
$meta_data = array();
foreach ($orders as $order_id) {
$meta_data[$order_id] = get_post_meta($order_id, '_engx_text_field_id', true);
}
//--------to access the value----end-----
if( isset($meta_data[$order_id]) ) { //is the field set
$curdir = getcwd(); //delcare variables
if (!file_exists($meta_data[$order_id])) {
if( mkdir( $curdir . "/" . $meta_data[$order_id], 0777) ) {
//below section for for testing purposes to see if the command ran - and yes shows correctly and creates directory as expected IF the POS url is set - triggers at momment on page refresh
echo "directory created"; //comment out when done testing
}else{
echo "directory NOT created"; //comment out when done testing
}
}
}else{
if( empty($meta_data[$order_id]) ) {
//do nothing
}
}
}
}

Answer 1

You should follow the same pattern you use for the plugins_loaded but this time replace it with whatever action you want to trigger the callback for. eg:
add_action( 'woocommerce_order_status_completed', array( 'pos__URL', 'init' ));
add_action( 'woocommerce_order_status_changed', array( 'pos__URL', 'init' ));
add_action( 'woocommerce_thankyou_page', array( 'pos__URL', 'init' ));
The init function of the pos_URL class will trigger when any of the above actions occur.