initial commit

templates/single-product/add-to-cart/external.php

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+<?php
+/**
+ * External product add to cart
+ *
+ * This template can be overridden by copying it to yourtheme/woocommerce/single-product/add-to-cart/external.php.
+ *
+ * HOWEVER, on occasion WooCommerce will need to update template files and you
+ * (the theme developer) will need to copy the new files to your theme to
+ * maintain compatibility. We try to do this as little as possible, but it does
+ * happen. When this occurs the version of the template file will be bumped and
+ * the readme will list any important changes.
+ *
+ * @see https://docs.woocommerce.com/document/template-structure/
+ * @package WooCommerce\Templates
+ * @version 3.4.0
+ */
+
+defined( 'ABSPATH' ) || exit;
+
+do_action( 'woocommerce_before_add_to_cart_form' ); ?>
+
+<form class="cart" action="<?php echo esc_url( $product_url ); ?>" method="get">
+	<?php do_action( 'woocommerce_before_add_to_cart_button' ); ?>
+
+	<button type="submit" class="single_add_to_cart_button button alt"><?php echo esc_html( $button_text ); ?></button>
+
+	<?php wc_query_string_form_fields( $product_url ); ?>
+
+	<?php do_action( 'woocommerce_after_add_to_cart_button' ); ?>
+</form>
+
+<?php do_action( 'woocommerce_after_add_to_cart_form' ); ?>