Process checkout step

Processes form submission for the current checkout step. The page parameter determines which page's data is being submitted.

Processing Flow:

1. Validates preconditions for the specified page

2. Validates submitted data according to page-specific rules

3. Updates pre-order state if validation succeeds

4. Recalculates campaigns and discounts

5. Determines next page and returns updated checkout state

Error Handling:

• Validation errors are returned in the errors object

• User remains on the current page when errors occur

• Previously entered valid data is preserved

post

Query parameters

pagestring · enumRequired

Page name to process (e.g., "IndexPage", "AddressSelectionPage")

Possible values:

Header parameters

x-requested-withstring · enumRequired

Required header for AJAX requests. Must be set to XMLHttpRequest for all checkout requests.

Default: XMLHttpRequestPossible values:

CookiestringOptional

Session cookie header (e.g. sessionid=abc123 or osessionid=<session_id>)

Body

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object · MasterpassOrderNoPageInputOptional

No input fields are required for this step. Submit an empty form body to trigger order number assignment and 3D Secure routing evaluation.

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object · GPayRedirectPageInputOptional

No input fields are required for this step. The request body must be empty. Any fields submitted in the body are not processed by this page and will not cause a validation error; however, the Garanti Pay gateway is not involved at this step, so gateway-specific parameters are irrelevant here.

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Responses

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Step processed successfully

application/json

errorsone of · nullableOptional

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string[]Optional

template_namestringOptional

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Redirect to basket (empty basket)

post/orders/checkout/

POST /orders/checkout/?page=IndexPage HTTP/1.1
Host: sandbox.akinon.com
x-requested-with: XMLHttpRequest
Content-Type: application/x-www-form-urlencoded
Accept: */*
Content-Length: 53

"user_email='[e-mail]'&phone_number='text'"

{
  "context_list": [
    {
      "page_name": "DeliveryOptionSelectionPage",
      "page_slug": "deliveryoptionselectionpage",
      "page_context": {
        "delivery_options": [
          {
            "pk": 1,
            "name": "Home Delivery",
            "delivery_option_type": "customer"
          }
        ]
      }
    }
  ],
  "pre_order": {
    "user_email": "[e-mail]",
    "phone_number": "[phone]"
  },
  "errors": {},
  "template_name": "orders/checkout.html"
}