One Page checkout plugin with custom checkout fields

I used this code: https://docs.woocommerce.com/document/tutorial-customising-checkout-fields-using-actions-and-filters/#section-3, and added a custom field to checkout. Then I tested with OPC, and the field shows up.

So there must be something wrong with your custom code. Perhaps start by adding a visible field or the one listed in the example.

Thanks Caleb

here is my code:

/*************************************************************/

function order_origin( $checkout ) {

woocommerce_form_field( 'order_link_origin', array(
        'type'          => 'hidden',
        'value'   => get_the_title() ,
        ), $checkout->get_value( 'order_link_origin' ));

}

add_action('woocommerce_after_order_notes', 'order_origin' );

/**
 * Display field value on the order edit page
 */
add_action( 'woocommerce_admin_order_data_after_order_notes', 'order_origin_display_admin_order_meta', 10, 1 );

function order_origin_display_admin_order_meta($order){
    echo '<p><strong>'.__('Order Origin').':</strong> ' . get_post_meta( $order->id, 'order_link_origin', true ) . '</p>';
}

Type “hidden” isn’t a supported option I believe. You can just assign a css class and hide it. And then ‘value’ isn’t an option either, but you can use ‘default’.

interesting – thanks, will give it a go!

Great – it works! Thanks!

Update:

I am not seeing the new fields in the order details.

Is there maybe something wrong with that filter code?

/**
 * Display field value on the order edit page
 */
add_action( 'woocommerce_admin_order_data_after_order_notes', 'order_origin_display_admin_order_meta', 10, 1 );

function order_origin_display_admin_order_meta($order){
    echo '<p><strong>'.__('Order Origin').':</strong> ' . get_post_meta( $order->id, 'order_link_origin', true ) . '</p>';
}

I don’t think you’re storing it (order_link_origin). I assume the meta is empty when you view the order?

right now I don’t even see the field label on the order page

What am I doing wrong?

Where did you get the ‘woocommerce_admin_order_data_after_order_notes’ hook from?

‘woocommerce_admin_order_data_after_shipping_address’ will add your custom text to the admin page here: https://github.com/woothemes/woocommerce/blob/efd390e9510d168ae730b05504225aa21b2a99cc/includes/admin/meta-boxes/class-wc-meta-box-order-data.php#L399

Thanks Caleb.
I see the label now, but still no content for the field value.

How can I check whether the issue is that its not being saved, or not being displayed properly?

You aren’t setting the value correctly in the woocommerce_form_field method: https://github.com/woothemes/woocommerce/blob/cfc31dd311d7f05d7f73ec6d66717c150f70ca00/includes/wc-template-functions.php#L1845

The last parameter is the value, and that needs to be get_the_title()

Thanks, this is my current code, which is not working (i had changed as per a previous comment):

function order_origin( $checkout ) {
	woocommerce_form_field( 'order_link_origin', array(
       		'type'          => 'text',
       	 	'default'   => get_the_title() ,
        	), $checkout->get_value( 'order_link_origin' ));
}

add_action('woocommerce_after_order_notes', 'order_origin' );

You are still setting the value to $checkout->get_value( 'order_link_origin' ). The meta key for order_link_origin is not set at this point in the process. Per the above post: “The last parameter is the value, and that needs to be get_the_title()”.

Thanks Caleb
sorry, it’s not clear to me.
Are you saying that the code needs to be like this:

function order_origin( $checkout ) {
	woocommerce_form_field( 'order_link_origin', array(
       		'type'          => 'text',
       	 	//'default'   => get_the_title() ,
        	), $checkout->get_the_title();
}

Wait, it was right before – my bad. You just aren’t saving it.

function order_origin_create_field( $checkout ) {
	woocommerce_form_field( 'order_link_origin', array(
       		'type'    => 'text',
       		'default' => get_the_title(),
        	), $checkout->get_value( 'order_link_origin' ) );
}
add_action( 'woocommerce_after_order_notes', 'order_origin_create_field' );

function order_origin_update_order_meta( $order_id ) {
    if ( ! empty( $_POST['order_link_origin'] ) ) {
        update_post_meta( $order_id, 'order_link_origin', sanitize_text_field( $_POST['order_link_origin'] ) );
    }
}
add_action( 'woocommerce_checkout_update_order_meta', 'order_origin_update_order_meta' );

function order_origin_display_admin_order_meta( $order ){
    echo '<p><strong>Order Origin:</strong> ' . get_post_meta( $order->id, 'order_link_origin', true ) . '</p>';
}
add_action( 'woocommerce_admin_order_data_after_shipping_address', 'order_origin_display_admin_order_meta', 10 );

Read all of this section: https://docs.woocommerce.com/document/tutorial-customising-checkout-fields-using-actions-and-filters/#section-5