Ecommerce

Ecommerce patterns

Commerce surfaces grouped around discovery, conversion, and account-management jobs.

This area gives ecommerce examples a clear home instead of mixing them into generic application UI.

§01

Provider-neutral product discovery

The reusable card renders price and availability projections without calculating commercial truth or importing a provider SDK.

Field notebook

NZ$129.00NZD

Available projection with a single product action.

Available

View product

Archive edition

NZ$249.00NZD

Unavailable inventory cannot present an actionable purchase path.

Unavailable

§02

Cart integrity

Totals are application projections, never presentation calculations. An unavailable line removes the checkout action at the reusable owner.

Your cart

  • Field notebook

    Archive green

    NZ$100.00NZD
    Quantity 2NZ$50.00NZD each
Subtotal
NZ$100.00NZD
Shipping
NZ$10.00NZD
Tax
NZ$16.50NZD
Total
NZ$126.50NZD

Your cart

  • Field notebook

    Archive green

    NZ$100.00NZD
    Quantity 2NZ$50.00NZD each
Subtotal
NZ$100.00NZD
Shipping
NZ$10.00NZD
Tax
NZ$16.50NZD
Total
NZ$126.50NZD

§03

Checkout recovery and confirmation

Failure gives one deterministic retry; success exposes the durable reference and expected next state.

Payment was not completed

No order was created and the cart is preserved.

Check the payment method and try again.

Order confirmed

The transaction completed once.

Order reference
ORDER-1042
Next step
A shipping update will be sent by email.

§04

Menu options

Storefront, checkout, and account patterns should be easy to scan before deeper examples exist.

Storefront

Checkout

Account