Actions & filters

/**
 * Hides checkout fields from the Dintero Checkout Express layout.
 *
 * List the fields you do not want shown below the order review. They stay in the off-screen
 * checkout form, so WooCommerce still submits them — but the customer never sees them.
 *
 * Only hide fields that are optional, or that something else fills in for you. Hiding a required
 * field does not stop WooCommerce validating it, and the customer will not be able to complete
 * the order. In the example below, 'createaccount' is hidden along with the two account fields
 * so that the "Create an account?" checkbox stays unticked and WooCommerce skips the check.
 *
 * @param string[] $fields Fields that Dintero keeps in the hidden checkout form.
 * @return string[]
 */
function my_dintero_hide_checkout_fields( $fields ) {
	$hide = array(
		'createaccount',
		'account_username',
		'account_password',
	);

	return array_merge( $fields, $hide );
}
add_filter( 'dintero_standard_woocommerce_fields', 'my_dintero_hide_checkout_fields' );

/**
 * Shows checkout fields in the Dintero Checkout Express layout.
 *
 * List the standard WooCommerce fields you want the customer to fill in themselves. They are
 * moved into the box below the order review, alongside the order notes.
 *
 * Dintero only writes its own value to the order if the field is empty, so what the customer
 * enters here is kept.
 *
 * @param string[] $fields Fields that Dintero keeps in the hidden checkout form.
 * @return string[]
 */
function my_dintero_show_checkout_fields( $fields ) {
	$show = array(
		'billing_company',
	);

	return array_values( array_diff( $fields, $show ) );
}
add_filter( 'dintero_standard_woocommerce_fields', 'my_dintero_show_checkout_fields' );