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Validating a Cart

Why Validate​

Before checking out we need to validate that the users purchase is still valid.

  • The store is still open
  • The timeslot requested is still available

ValidateCart query​

We do this with the ValidateCart query:

query ValidateCart($cartId: ID!) {
  ValidateCart(cartId: $cartId) {
    nextAvailable {
      datetime
      range
      value
    }
    valid
    isStoreOpen
    discountErrors
    discountWarnings
  }
}

variables:

{
  "cartId": "f59822a7-b30f-4047-a028-125a8956366c"
}

Failures and Warnings​

Failures​

If valid is false or isStoreOpen is false the cart should not be allowed to proceed.

nextAvailable will give the next available date and time for this store which can be offered to the user.

discountErrors will detail any errors that will prevent you from checking out.

Warnings​

discountWarnings will return an array of warnings. These will not be enforced until you try to make a payment.