functions.php

<?php

add_filter( 'ninja_shop_possible_template_paths', function( $paths ) {
	$paths[] = dirname( __FILE__ ) . '/templates/';
	return $paths;
} );

template.php

<?php
/**
 * This is the modified template for our checkout instance,
 * which returns an empty div to omit the Edit Cart link
 * from the workflow.
 */
?>

<?php do_action( 'ninja_shop_content_checkout_before_cancel_element' ); ?>
<div class="ninja-shop-checkout_cancel hidden">
</div>
<?php do_action( 'ninja_shop_content_checkout_after_cancel_element' ); ?>

Ninja Shop templates can be customized by loading a different file, which will be given preference over the initial template file.

• Add the filter ninja_shop_possible_template_paths and append a new template path.
• In the new template path, create template files with names matching the template in Ninja Shop.