← All changes | functions/shipping.php +52 -0 1.3.48 → 1.4.17 View file →

		@@ -37,4 +37,56 @@
37	37	}
38	38
39	39	add_filter( 'woocommerce_package_rates', 'disco_add_free_shipping_rate', 100, 1 );
40	40	}
	41	+
	42	+if ( ! function_exists( 'disco_refresh_shipping_cache_on_cart_checkout' ) ) {
	43	+
	44	+ /**
	45	+ * Force WooCommerce to recalculate shipping rates on the cart and checkout pages.
	46	+ *
	47	+ * Disco adds/removes the disco_free_shipping rate through the
	48	+ * woocommerce_package_rates filter based on the current campaign state, but
	49	+ * WooCommerce caches the calculated package rates in the customer session
	50	+ * keyed by a hash of the cart contents only - campaign state is NOT part of
	51	+ * that hash. So when a campaign is activated or deactivated, an existing
	52	+ * session keeps serving the stale cached rates: a lingering disco_free_shipping
	53	+ * rate after deactivation, or a chosen shipping method that no longer exists,
	54	+ * which makes the shipping options appear hidden or broken until the cart
	55	+ * contents change.
	56	+ *
	57	+ * Clearing this session's cached package rates whenever the cart or checkout
	58	+ * page is viewed forces a fresh calculation that reflects the current campaign
	59	+ * state, for this customer only (no global cache flush).
	60	+ *
	61	+ * @return void
	62	+ */
	63	+ function disco_refresh_shipping_cache_on_cart_checkout() {
	64	+ if ( is_admin() || ! function_exists( 'is_cart' ) || ! function_exists( 'WC' ) ) {
	65	+ return;
	66	+ }
	67	+
	68	+ if ( ! is_cart() && ! is_checkout() ) {
	69	+ return;
	70	+ }
	71	+
	72	+ $session = WC()->session;
	73	+ $cart = WC()->cart;
	74	+
	75	+ if ( ! $session instanceof WC_Session || ! $cart instanceof WC_Cart ) {
	76	+ return;
	77	+ }
	78	+
	79	+ // Invalidate the cached rates for every shipping package in this session.
	80	+ // The package keys match the keys WooCommerce uses when it stores rates
	81	+ // under 'shipping_for_package_{key}', so setting them to false makes
	82	+ // WC_Shipping::calculate_shipping_for_package() recalculate instead of
	83	+ // returning the stale cached rates.
	84	+ foreach ( array_keys( $cart->get_shipping_packages() ) as $package_key ) {
	85	+ $session->set( 'shipping_for_package_' . $package_key, false );
	86	+ }
	87	+
	88	+ $cart->calculate_shipping();
	89	+ }
	90	+
	91	+ add_action( 'template_redirect', 'disco_refresh_shipping_cache_on_cart_checkout' );
	92	+}