Parent-Child Cart Item Relationship Demo for WooCommerce Extensions🌐ⵙⵖⵓⵏ

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WooCommerce 11.3 introduces a new filter and API field to let extensions declare parent-child relationships between cart items, improving accuracy for bundled and composite product

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A sample extension plugin for WooCommerce 11.3+, adding a parent product and a child product to the cart, with the child’s cart item data containing the parent’s cart item key. Limit to a test store or staging environment with a single parent-child product pair and up to 5 test users. Duration: 2 weeks for setup, testing, and documentation. Unvalidated hypothesis; full brief: /blog/declaring-parent-child-cart-item-relationships-i-2026-11-02 Source: ⴰⵙⴽⵓⴷⵓ

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WooCommerce extension developers who add products to the cart on behalf of other items (e.g., bundle, composite, chained, or 'frequently bought together' extensions), and store owners seeking to improve cart accuracy.

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Test whether the Product Button count accurately excludes child items when using the new filter, compared to the previous behavior where all items were counted equally. Hypothesis: Declaring parent-child relationships will reduce shopper confusion and improve UI accurac Proposed validation: Proposed pilot target: In a 2-week test with 5 users, at least 90% of cart interactions with the sample extension should show correct Product Button counts (excluding child items). Baseline: previous behavior where child items were counted. Measure via manual test logs

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