[Devel] How to pass a data through the checkout

There are WC Sessions you can use, however, if this is not affected by the customer, why does it have to be stored and not just processed during checkout?

I tried also the WC Sessions (WC()->session->set/get), but I don’t succeed to pass the data throught the ckeckout : In the “woocommerce_checkout_process” add_action my data is still in the WC Sessions : but after in the “woocommerce_thankyou” add_action my
WC Sessions has become empty.
Certainly I dont use correctly WC Sessions. Please a link to a doc.

Sessions get cleared once the thanks page is reached, so you’d have to store your data during checkout processing.

OK. I see that in “woocommerce_checkout_order_processed” Add_action there is 1) the WC Session not cleared AND 2) the order created.
I can store here.
Right ?

Please, could you give me the action/filter to use to have the WC Session not cleared AND the order_id created.

I tried woocommerce_checkout_order_processed and woocommerce_checkout_update_order_meta, but my data in WC Session seems to have been flushed at that point.

Store it at this point https://github.com/woothemes/woocommerce/blob/master/includes/class-wc-checkout.php#L654

Thanks. It really seems the right place to store and I tried it. But my WC()→session→get() from “woocommerce_checkout_order_processed?? hook is unsuccessfull with a null result.

To sump up?: I created several session datas with WC()→session→set() :
– in ??woocommerce_cart_calculate_fees?? hook,
– in an ajax callback function,
– and in ??woocommerce_checkout_process?? hook.
These datas are correctly WC()→session→get() :
– in ??woocommerce_cart_calculate_fees?? hook,
– in ??woocommerce_review_order_after_cart_contents?? hook,
– in an ajax callback function,
– and in ??woocommerce_checkout_process?? hook.

But in my case, none of theses session datas can be WC()→session→get() in the ??woocommerce_checkout_order_processed?? hook.

Any idea is welcome.

To clarify, are you unable to retrieve any session data at that hook, or just the specific data that you created / added to the session?

It is only my specific data which I cannot retrieve. I did the following test.

In put exactly the same sequence of session->get in “cdi_woocommerce_checkout_process” hook and “woocommerce_checkout_order_processed” hook with results tracked by error_log():

WC()->session->get( ‘cdi_forcedproductcode’)
WC()->session->get( ‘cdi_pickuplocationid’)
WC()->session->get( ‘chosen_shipping_methods’)
WC()->session->get( ‘chosen_payment_method’)

In “cdi_woocommerce_checkout_process” hook, I get correctly the 4 data : my 2 custom data and the 2 woocommerce data.

In “woocommerce_checkout_order_processed” hook, I get only the 2 woocommerce data, my custom data becoming null.

Do you have any other code unsetting your values? WC doesn’t clear the session before this point – you can see in the source it uses the session data itself.

Found !!

My main calc sequence for my custom session data is on “woocommerce_cart_calculate_fees” hook.

It appears that this hook is trigger again (and in a non valid context) between “woocommerce_checkout_process” hook and “woocommerce_checkout_order_processed” hook. I don’t know why.

So, I tested successfully the solution to create a new set of custom session data to pass them from “woocommerce_checkout_process” to “woocommerce_checkout_order_processed”. But I am not sure it is the smartest way.

Thanks to the team.