If you're looking to safeguard your website from potential issues during a future Woocommerce upgrade, you can follow the official recommended method (thanks to Felix for the tip).
To ensure compatibility with future updates, simply copy the file add-to-cart.php into a directory named /woocommerce within your theme, maintaining the same file structure but removing the /templates/ subdirectory.
For example, if you want to override the admin order notification, copy:
wp-content/plugins/woocommerce/templates/emails/admin-new-order.php
to
wp-content/themes/yourtheme/woocommerce/emails/admin-new-order.php
Here is an updated file for Woocommerce 3.3.0:
<?php
/**
* Loop Add to Cart
*
* This template can be overridden by copying it to yourtheme/woocommerce/loop/add-to-cart.php.
*
* HOWEVER, WooCommerce may occasionally update template files that require theme developers to copy the new files to maintain compatibility. We aim to minimize these occurrences, but they do happen. When changes occur, the version of the template file will be incremented and any important modifications will be listed in the readme.
*
* @see https://docs.woocommerce.com/document/template-structure/
* @author WooThemes
* @package WooCommerce/Templates
* @version 3.3.0
*/
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
global $product;
echo apply_filters( 'woocommerce_loop_add_to_cart_link', // WPCS: XSS ok.
sprintf( '<a href="%s" data-quantity="%s" class="%s" %s><span style="color:#bb0d00;">%s</span> <span style="color:#999;">|</span> %s</a>',
esc_url( $product->add_to_cart_url() ),
esc_attr( isset( $args['quantity'] ) ? $args['quantity'] : 1 ),
esc_attr( isset( $args['class'] ) ? $args['class'] : 'button' ),
isset( $args['attributes'] ) ? wc_implode_html_attributes( $args['attributes'] ) : '',
$product->get_price_html(),
esc_html( $product->add_to_cart_text() )
),
$product, $args );
?>
You have the freedom to style the button or customize its content as desired, beyond just displaying the product price.