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Since the cart key is provided in both the cart response and returned headers. Saving the cart key in your own cookie or local storage is recommended.
CoCart core v4.2 introduced a significant architectural change to how cart sessions are managed.
  • Cart keys are now the primary method for identifying cart sessions for both guest and authenticated users. No more WooCommerce session cookies when using the API.
  • All session management handled by CoCart makes it more reliable for headless and decoupled WooCommerce stores.
This change helps with the confusion of needing to pass along the session cookie or reading the cookie to extract the cart key and help with user switching much better. We got mixed feedback for before this change, so by removing the cookie the session handler relied on before, the developer has better control over it.
Developer Impact
  • If you previously relied on WooCommerce’s session cookies with CoCart, you must now use the cart key returned.
  • All custom integrations, middleware, or client apps must store and send the cart key with every relevant API request.

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Versions not to install

  • 4.0.0 - Was missing a required class. 4.0.1 fixes that.
  • 4.2.0 - A deprecated function was causing a fatal error. Fixed with 4.2.1
  • 4.3.1 - Hot fix in 4.3.2 corrected issues that affected CoCart since 4.2.0 and patches were applied to previous versions to prevent roll update issues for those who had not updated automatically.

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Deprecations

We advise that you update on staging or local to check if you have used any of our experimental functions and filters that were added to the session handler to see if any have been deprecated. You can also see the list of deprecations below.
  • Removed the legacy API that CoCart started with.
  • Removed support for stores running lower than WooCommerce version 4.5
  • User switching removed. Never worked 100%. Mainly added for internal debugging purposes.
  • No longer use cocart_override_cart_item filter. Recommend using cocart_item_added_to_cart action hook instead.
  • No longer user cocart_cart_updated hook. Replaced with cocart_update_cart_before_totals hook.
  • Removed the need to support web host “Pantheon” by filtering the cookie name.
  • Removed our session abstract CoCart_Session that extended WC_Session. Any remaining functions have moved to a refreshed session handler.
  • Function CoCart_Session_Handler::destroy_cookie() no longer used.
  • Function CoCart_Session_Handler::cocart_setcookie() no longer used.
  • Function CoCart_Session_Handler::get_cart() no longer used.
  • Filter cocart_cookie no longer used. Use woocommerce_cookie instead.
  • Filter cocart_cookie_httponly no longer used.
  • Filter cocart_cookie_supported no longer used.
  • Filter cocart_set_cookie_options no longer used.
  • Filter cocart_cart_use_secure_cookie no longer used. Use wc_session_use_secure_cookie instead.
  • Filter cocart_is_cart_data_valid no longer used.
  • Returned headers X-CoCart-API-Timestamp and X-CoCart-API-Version no longer used.