[Resolved] Assign custom field to WC order

[Author]

Posts

[Pat]

Hello,

I'm using the WooCommerce Admin Custom Order Fields plugin in order to add custom field to order page and order emails.
The plugin is working fine and I can have the desired info on the order page and emails.
My process id the following :

I have a postype "Concours" that is used to create event. When a user is on this page, he has the ability to book a product. For this, I have a specific postype "inscription". This postype is a child of "Concours", so I can retrieve the concours name. When the user finalize his choice thanks to a WC Cred form, a new post inscription is created and a WC order is created (using a specific product defined in the WC Cred form)
Now, I would like to populate the Woocommerce admin custom field after having submitted the Cred form.
The way I can have access to this custom field in the database is :
get_post_meta( $order_id, '_wc_acof_2', true )
So, I suppose I need to create the record in the cred_save_data :

add_action('cred_save_data', 'add_custom_field',10,2);
function add_custom_field($post_id, $form_data)
{
$meta_key = '_wc_acof_2';
$meta_value = ?;
add_post_meta($post_id, $meta_key, $meta_value, true);
}

The only question here is how can I retrieve the title of the concours which is a parent of the created inscription post (I should use _wpcf_belongs_concours_id but I'm not sure of the syntax and how to retrieve it during the save data process) ?
Regards
Pat

[Christian Cox]

The only question here is how can I retrieve the title of the concours which is a parent of the created inscription post (I should use _wpcf_belongs_concours_id but I'm not sure of the syntax and how to retrieve it during the save data process) ?
Hi Pat, it depends on when this Form was created and whether or not this post relationship has been migrated into the new Post Relationships system. In the old system, you could access the parent post ID in the $_POST superglobal as _wpcf_belongs_concours_id, then get the title using get_the_title:

$meta_value = isset($_POST['_wpcf_belongs_concours_id']) ? get_the_title($_POST['_wpcf_belongs_concours_id']) : '';

In the new system, you can access the parent post using the updated relationship slug syntax. It looks like @relationship-slug_parent, but depends on your post relationship slug:

$meta_value = isset($_POST['@relationship-slug_parent']) ? get_the_title($_POST['@relationship-slug_parent']) : '';

[Pat]

Hi Christian,

Many thanks for your explanation.
Best wishes for 2019.
Regards
Pat