Run Function if Order Meta Exists - WooCommerce

Question

If a checkbox is checked, it saves a value of 1 for a 'my_checkbox' custom order field in WooCommerce. I'm editing the order admin table and I need to be able to echo a particular icon url if the value of 'my_checkbox' equals 1. I just don't know how to check if the value is equal to one so I can echo the url. Any ideas?

To make troubleshooting easier, here's the code:

/**
* Add checkbox field to the checkout
**/
add_action('woocommerce_after_checkout_billing_form', 'match_previous_order_checkbox');

function match_previous_order_checkbox( $checkout ) {
echo '<div id="match_the_order">';
woocommerce_form_field( 'my_checkbox', array(
     'type'     => 'checkbox',
     'class'    => array('form-row notes'),
     'label'    => __( 'This is a previous order' , 'woothemes'),
     'required' => false,
    ), 
    $checkout->get_value( 'my_checkbox' ));
    echo '</div>';
}
/**
* Update the order meta with field value
**/
add_action('woocommerce_checkout_update_order_meta', 'match_order_checkout_field_update_order_meta');

function match_order_checkout_field_update_order_meta( $order_id ) {
    if ($_POST['my_checkbox']) {
    update_post_meta( $order_id, 'My_Checkbox', esc_attr($_POST['my_checkbox']));
    }
}
global $order;
$match_order_meta = get_post_meta( $order_id , 'My_Checkbox' );

$match_order_meta = get_post_meta( $order->ID , 'My_Checkbox' ); doesn't work either. Also whether or not I include global $order; doesn't seem to matter.

Answer 1

WooCommerce orders are posts and behave the same as any WordPress post. So you can use the same WordPress functions to update or read the post meta data.

<?php $meta_values = get_post_meta($post_id, $key, $single); ?>

For your example I'd suggest:

$match_order_meta = get_post_meta( $order->ID, 'My_Checkbox', TRUE);

The 'TRUE' flag tells WordPress to return the value as a string. Without the TRUE flag you'll get an array. Again take a look at the docs below.

You might also:

echo '<!-- $order->ID -->';

To make sure you have the correct ID.

Here are the docs get_post_meta().