Automatic change product category after sold out

There is no existing code, but there is a suitable hook you can use to do the customisation yourself https://github.com/woothemes/woocommerce/blob/f5e9875548a99933be66f07f90ed26ce2c1909f8/includes/abstracts/abstract-wc-product.php#L341

Thank you Mike.
But I’am a very beginner, how exactly I can use the hook?
Can you give me an example how I must modify the code?

Thank you very much again!

Ist there an “do_action”-function for changeing the product category?
And i put this between the if instruction?
For example?

if ( update_post_meta( $this->id, '_stock_status', $status ) ) {
			$this->stock_status = $status;
			do_action( 'woocommerce_product_set_stock_status', $this->id, $status );
do_action( 'woocommerce_product_category_change',$this->id, my_category);
		}

?!

I would be thankful for any help

woocommerce_product_set_stock_status action is fired on stock change. So you’d:

1. Hook in a custom function on woocommerce_product_set_stock_status
2. The hook gives you the product object, so you can check if the new status is out of stock
3. Then change the category using https://codex.www.ads-software.com/Function_Reference/wp_set_post_terms

There are plenty of tutorials on using actions and filters if you do a search. If you do need someone to code this up for you, try jobs.wordpress.net

Thank you Mike!
I think I can do it somehow.

Greetings Adrjan

Hi Adrjan,

Did you ever figure out how to do this? I have a client who wants exactly the same thing but am not too confident in my ability to set this action properly.

Would appreciate your sharing your solution.

Thanks,
Wizard247