An example of using the WooCommerce Admin Custom Order Fields 'wc_admin_custom_order_field_options' filter to return a dynamic set of options. In this sample we're pulling all WordPress terms, for the field which we have named "From Database". Options could be pulled from any other database/table, remote service, or anywhere! To use this code, c…

wc-admin-custom-order-fields-dynamic-options.php

<?php

/*
 * Returns a set of admin custom order field options from the database, rather
 * than as configured by the admin
 */
add_filter( 'wc_admin_custom_order_field_options', function( $options, $field ) {

	global $wpdb;

	// return all the configured WordPress terms as the field options for the field named "From Database"
	if ( 'From Database' == $field->label ) {

		// clear out any passed options so we can set our own
		$options = array();

		$results = $wpdb->get_results( "SELECT slug, name FROM {$wpdb->terms} ORDER BY name" );

		foreach ( $results as $row ) {
			$options[] = array( 'label' => $row->name, 'value' => $row->slug, 'default' => false );
		}
	}

	return $options;
}, 10, 2 );

Sounds great! Waiting for the release...

When i try to add other fields with your plugin, no fields shows up in the checkout form. How do i call the fields from your plugin to show up?