wordpressのプラグインであるwoocommerceのカスタマイズ

Question

現在wordpressのプラグインであるwoocommerceを使用し、ECサイトを作成しているのですが、支払いページの文を変えたいと思い、固定ページを見てみるとショートコード一行のみで書かれておりました。そこで、いろいろ探したところ、woocommerceのファイルでclass-wc-shortcode-my-accountというファイルがありその中身が以下のようになっていました。しかし、ショートコードの中身が書いておらず、困っております。どなたかわかる方いらっしゃいましたらよろしくお願いいいたします。

<?php
/**
 * Checkout Shortcode
 *
 * Used on the checkout page, the checkout shortcode displays the checkout process.
 *
 * @package WooCommerce/Shortcodes/Checkout
 * @version 2.0.0
 */

defined( 'ABSPATH' ) || exit;

/**
 * Shortcode checkout class.
 */
class WC_Shortcode_Checkout {

	/**
	 * Get the shortcode content.
	 *
	 * @param array $atts Shortcode attributes.
	 * @return string
	 */
	public static function get( $atts ) {
		return WC_Shortcodes::shortcode_wrapper( array( __CLASS__, 'output' ), $atts );
	}

	/**
	 * Output the shortcode.
	 *
	 * @param array $atts Shortcode attributes.
	 */
	public static function output( $atts ) {
		global $wp;

		// Check cart class is loaded or abort.
		if ( is_null( WC()->cart ) ) {
			return;
		}

		// Backwards compatibility with old pay and thanks link arguments.
		if ( isset( $_GET['order'] ) && isset( $_GET['key'] ) ) { // WPCS: input var ok, CSRF ok.
			wc_deprecated_argument( __CLASS__ . '->' . __FUNCTION__, '2.1', '"order" is no longer used to pass an order ID. Use the order-pay or order-received endpoint instead.' );

			// Get the order to work out what we are showing.
			$order_id = absint( $_GET['order'] ); // WPCS: input var ok.
			$order    = wc_get_order( $order_id );

			if ( $order && $order->has_status( 'pending' ) ) {
				$wp->query_vars['order-pay'] = absint( $_GET['order'] ); // WPCS: input var ok.
			} else {
				$wp->query_vars['order-received'] = absint( $_GET['order'] ); // WPCS: input var ok.
			}
		}

		// Handle checkout actions.
		if ( ! empty( $wp->query_vars['order-pay'] ) ) {

			self::order_pay( $wp->query_vars['order-pay'] );

		} elseif ( isset( $wp->query_vars['order-received'] ) ) {

			self::order_received( $wp->query_vars['order-received'] );

		} else {

			self::checkout();

		}
	}

	/**
	 * Show the pay page.
	 *
	 * @throws Exception When validate fails.
	 * @param int $order_id Order ID.
	 */
	private static function order_pay( $order_id ) {

		do_action( 'before_woocommerce_pay' );

		$order_id = absint( $order_id );

		// Pay for existing order.
		if ( isset( $_GET['pay_for_order'], $_GET['key'] ) && $order_id ) { // WPCS: input var ok, CSRF ok.
			try {
				$order_key          = isset( $_GET['key'] ) ? wc_clean( wp_unslash( $_GET['key'] ) ) : ''; // WPCS: input var ok, CSRF ok.
				$order              = wc_get_order( $order_id );
				$hold_stock_minutes = (int) get_option( 'woocommerce_hold_stock_minutes', 0 );

				// Order or payment link is invalid.
				if ( ! $order || $order->get_id() !== $order_id || ! hash_equals( $order->get_order_key(), $order_key ) ) {
					throw new Exception( __( 'Sorry, this order is invalid and cannot be paid for.', 'woocommerce' ) );
				}

				// Logged out customer does not have permission to pay for this order.
				if ( ! current_user_can( 'pay_for_order', $order_id ) && ! is_user_logged_in() ) {
					echo '<div class="woocommerce-info">' . esc_html__( 'Please log in to your account below to continue to the payment form.', 'woocommerce' ) . '</div>';
					woocommerce_login_form(
						array(
							'redirect' => $order->get_checkout_payment_url(),
						)
					);
					return;
				}

				// Logged in customer trying to pay for someone else's order.
				if ( ! current_user_can( 'pay_for_order', $order_id ) ) {
					throw new Exception( __( 'This order cannot be paid for. Please contact us if you need assistance.', 'woocommerce' ) );
				}

				// Does not need payment.
				if ( ! $order->needs_payment() ) {
					/* translators: %s: order status */
					throw new Exception( sprintf( __( 'This order&rsquo;s status is &ldquo;%s&rdquo;&mdash;it cannot be paid for. Please contact us if you need assistance.', 'woocommerce' ), wc_get_order_status_name( $order->get_status() ) ) );
				}

				// Ensure order items are still stocked if paying for a failed order. Pending orders do not need this check because stock is held.
				if ( ! $order->has_status( wc_get_is_pending_statuses() ) ) {
					$quantities = array();

					foreach ( $order->get_items() as $item_key => $item ) {
						if ( $item && is_callable( array( $item, 'get_product' ) ) ) {
							$product = $item->get_product();

							if ( ! $product ) {
								continue;
							}

							$quantities[ $product->get_stock_managed_by_id() ] = isset( $quantities[ $product->get_stock_managed_by_id() ] ) ? $quantities[ $product->get_stock_managed_by_id() ] + $item->get_quantity() : $item->get_quantity();
						}
					}

					foreach ( $order->get_items() as $item_key => $item ) {
						if ( $item && is_callable( array( $item, 'get_product' ) ) ) {
							$product = $item->get_product();

							if ( ! $product ) {
								continue;
							}

							if ( ! apply_filters( 'woocommerce_pay_order_product_in_stock', $product->is_in_stock(), $product, $order ) ) {
								/* translators: %s: product name */
								throw new Exception( sprintf( __( 'Sorry, "%s" is no longer in stock so this order cannot be paid for. We apologize for any inconvenience caused.', 'woocommerce' ), $product->get_name() ) );
							}

							// We only need to check products managing stock, with a limited stock qty.
							if ( ! $product->managing_stock() || $product->backorders_allowed() ) {
								continue;
							}

							// Check stock based on all items in the cart and consider any held stock within pending orders.
							$held_stock     = ( $hold_stock_minutes > 0 ) ? wc_get_held_stock_quantity( $product, $order->get_id() ) : 0;
							$required_stock = $quantities[ $product->get_stock_managed_by_id() ];

							if ( $product->get_stock_quantity() < ( $held_stock + $required_stock ) ) {
								/* translators: 1: product name 2: quantity in stock */
								throw new Exception( sprintf( __( 'Sorry, we do not have enough "%1$s" in stock to fulfill your order (%2$s available). We apologize for any inconvenience caused.', 'woocommerce' ), $product->get_name(), wc_format_stock_quantity_for_display( $product->get_stock_quantity() - $held_stock, $product ) ) );
							}
						}
					}
				}

				WC()->customer->set_props(
					array(
						'billing_country'  => $order->get_billing_country() ? $order->get_billing_country() : null,
						'billing_state'    => $order->get_billing_state() ? $order->get_billing_state() : null,
						'billing_postcode' => $order->get_billing_postcode() ? $order->get_billing_postcode() : null,
					)
				);
				WC()->customer->save();

				$available_gateways = WC()->payment_gateways->get_available_payment_gateways();

				if ( count( $available_gateways ) ) {
					current( $available_gateways )->set_current();
				}

				wc_get_template(
					'checkout/form-pay.php',
					array(
						'order'              => $order,
						'available_gateways' => $available_gateways,
						'order_button_text'  => apply_filters( 'woocommerce_pay_order_button_text', __( 'Pay for order', 'woocommerce' ) ),
					)
				);

			} catch ( Exception $e ) {
				wc_print_notice( $e->getMessage(), 'error' );
			}
		} elseif ( $order_id ) {

			// Pay for order after checkout step.
			$order_key = isset( $_GET['key'] ) ? wc_clean( wp_unslash( $_GET['key'] ) ) : ''; // WPCS: input var ok, CSRF ok.
			$order     = wc_get_order( $order_id );

			if ( $order && $order->get_id() === $order_id && hash_equals( $order->get_order_key(), $order_key ) ) {

				if ( $order->needs_payment() ) {

					wc_get_template( 'checkout/order-receipt.php', array( 'order' => $order ) );

				} else {
					/* translators: %s: order status */
					wc_print_notice( sprintf( __( 'This order&rsquo;s status is &ldquo;%s&rdquo;&mdash;it cannot be paid for. Please contact us if you need assistance.', 'woocommerce' ), wc_get_order_status_name( $order->get_status() ) ), 'error' );
				}
			} else {
				wc_print_notice( __( 'Sorry, this order is invalid and cannot be paid for.', 'woocommerce' ), 'error' );
			}
		} else {
			wc_print_notice( __( 'Invalid order.', 'woocommerce' ), 'error' );
		}

		do_action( 'after_woocommerce_pay' );
	}

関係がありそうな箇所だけぬきだしました。

Comments

[CHERRY]

どのようなメッセージを変更したいのでしょうか？

WordPress やプラグインやテーマのディレクトリの中で、変更したいメッセージを検索してみるとどこかに記載されていないでしょうか？