Apply Coupon - Plugixa Car Rental for WordPress

Apply Coupon - Plugixa Car Rental

POST /plugixa-car-rental/v1/public/coupon

Apply a coupon to a held booking, or remove it with an empty code. The booking is priced again with the same dates, car and extras.

Public: no sign-in and no nonce. Needs the Booking form app on. Rate limited to 20 requests an hour per visitor address: see Public routes. The code is checked only when the Coupons app is on.

Note. A refused code answers 422 plugixa_car_rental_coupon_refused, but the booking has already been priced again without any coupon. A coupon applied earlier is gone: read the booking again rather than assuming it kept its old price.

Request

POST https://your-site.example/wp-json/plugixa-car-rental/v1/public/coupon

Request body

Content type: application/json

Field	Type	Required	Description
`token`	`string`	Yes	The token Hold Car returned.
`coupon`	`string`	No	The code, in any case. Empty removes the coupon.

{
  "token": "ca978112ca1bbdcafac231b39a23dc4da786eff8147c4e72b9807785afee48bb",
  "coupon": "WINTER10"
}

Responses

`200` OK. `data` is the booking at its new price.

{
  "success": true,
  "data": {
    "reference": "CR-2026-0128",
    "status": "pending",
    "vehicle_model_name": "Peugeot 3008",
    "pickup_location_name": "Paris Gare de Lyon",
    "return_location_name": "Paris Gare de Lyon",
    "pickup_local": "2026-12-01 10:00 CET",
    "return_local": "2026-12-04 10:00 CET",
    "days": 3,
    "hold_expires_at": "2026-11-12T09:45:00Z",
    "customer_name": "",
    "customer_email": "",
    "payment_method": "",
    "currency": "EUR",
    "line_items": [
      {
        "type": "rental",
        "label": "Peugeot 3008, 3 days",
        "quantity": 3.0,
        "unit_price": 65.0,
        "total": 195.0
      },
      {
        "type": "extra",
        "label": "Child seat",
        "quantity": 1.0,
        "unit_price": 24.0,
        "total": 24.0
      },
      {
        "type": "coupon",
        "label": "Coupon WINTER10",
        "quantity": 1.0,
        "unit_price": -21.9,
        "total": -21.9
      }
    ],
    "subtotal": 219.0,
    "discount_total": 21.9,
    "tax_total": 0.0,
    "total": 197.1,
    "deposit": 800.0,
    "amount_paid": 0.0,
    "payment_status": "unpaid",
    "payment_options": [
      {
        "type": "full",
        "amount": 197.1,
        "label": ""
      }
    ]
  }
}

Field	Type	Meaning
`data.line_items`	`object[]`	Price lines: `type`, `label`, `quantity`, `unit_price`, `total`
`data.total`	`number`	What the customer pays
`data.discount_total`	`number`	The coupon’s discount, as a positive number

Errors

Status	Code	When
`404`	`plugixa_car_rental_not_found`	No booking has that token, or it is in the trash.
`422`	`plugixa_car_rental_coupon_refused`	The code is unknown, unpublished, not valid yet, expired, used up, or the rental is too short for it. The message says which.
`409`	`plugixa_car_rental_booking_closed`	The booking is no longer `pending`.
`409`	`plugixa_car_rental_unknown_model`	The booking’s model was deleted for good.
`409`	`plugixa_car_rental_unknown_location`	A location the booking uses was deleted for good.
`422`	`plugixa_car_rental_not_priced`	The booking can no longer be priced: no published rate covers it.

Plus the errors every endpoint can return.

Examples

curl -s -X POST "https://your-site.example/wp-json/plugixa-car-rental/v1/public/coupon" \
  -H "Content-Type: application/json" \
  -d '{"token":"ca978112ca1bbdcafac231b39a23dc4da786eff8147c4e72b9807785afee48bb","coupon":"WINTER10"}'

<?php
$ch = curl_init('https://your-site.example/wp-json/plugixa-car-rental/v1/public/coupon');
curl_setopt_array($ch, [
    CURLOPT_CUSTOMREQUEST  => 'POST',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER     => [
        'Content-Type: application/json',
    ],
    CURLOPT_POSTFIELDS     => json_encode([
        'token'  => 'ca978112ca1bbdcafac231b39a23dc4da786eff8147c4e72b9807785afee48bb',
        'coupon' => 'WINTER10',
    ]),
]);
$response = json_decode(curl_exec($ch), true);
curl_close($ch);

const response = await fetch('https://your-site.example/wp-json/plugixa-car-rental/v1/public/coupon', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    token: 'ca978112ca1bbdcafac231b39a23dc4da786eff8147c4e72b9807785afee48bb',
    coupon: 'WINTER10',
  }),
});
const { data } = await response.json();