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Create Extra - Plugixa Car Rental

POST /plugixa-car-rental/v1/extras

Create an extra.

Needs the Extras app on. The user needs the plugixa_car_rental_create capability.

Request

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

Request body

Content type: application/json

Field Type Required Description
name string Yes Must not be blank.
price number No Not negative. Rounded to 2 decimals. Defaults to 0.
price_type string No per_day (the default) or per_rental.
max_total number No For a per-day extra, the most it costs for one rental. 0 (the default) for no cap. When set, at least price.
max_quantity integer No 1 to 20. Defaults to 1.
description string No Plain text.
sort_order integer No Position in lists, lowest first. Defaults to 0. May be negative.
status string No published (the default) or unpublished. 
{
  "name": "Child seat",
  "description": "For children from 9 to 18 kg.",
  "price": 8,
  "price_type": "per_day",
  "max_total": 40,
  "max_quantity": 2
}

Responses

201 Created. data is the new extra.

{
  "success": true,
  "data": {
    "id": 3,
    "name": "Child seat",
    "description": "For children from 9 to 18 kg.",
    "price": 8.0,
    "price_type": "per_day",
    "max_total": 40.0,
    "max_quantity": 2,
    "sort_order": 0,
    "status": "published",
    "created_by": 1,
    "modified_by": 1,
    "created_at": "2026-11-12 09:30:00",
    "modified_at": "2026-11-12 09:30:00",
    "deleted_at": null
  }
}
Field Type Meaning
data.id integer The extra’s id. Send it in a booking’s extras
data.name string The name customers see
data.price number Price per day or per rental
data.price_type string per_day or per_rental
data.max_total number Most a per-day extra costs for one rental, 0 for no cap
data.max_quantity integer Most a booking may take, 1 to 20
data.status string published or unpublished. Only a published extra is offered
data.description string|null Plain text
data.sort_order integer Position in lists, lowest first
data.created_at string UTC datetime the record was created
data.modified_at string UTC datetime of the last change. Send it back on an update to be warned of a conflicting edit
data.deleted_at string|null null unless the record is in the trash

Errors

Status Code When
422 plugixa_car_rental_invalid name is blank, price or max_total is negative, max_quantity is outside 1 to 20, or max_total is below price. data.field names the field.
422 plugixa_car_rental_invalid_choice status or price_type is not one of its values. data.allowed lists them.
422 plugixa_car_rental_not_a_number A number field was sent as something else. data.field names it.
422 plugixa_car_rental_negative_number A number field that cannot be negative is. data.field names it.
422 plugixa_car_rental_too_long A text field is longer than its column. data.field names it and data.max gives the limit.

Plus the errors every endpoint can return.

Examples

curl -s -X POST "https://your-site.example/wp-json/plugixa-car-rental/v1/extras" \
  -u "admin:$WP_APP_PASSWORD" \
  -H "Content-Type: application/json" \
  -d '{"name":"Child seat","description":"For children from 9 to 18 kg.","price":8,"price_type":"per_day","max_total":40,"max_quantity":2}'

<?php
$ch = curl_init('https://your-site.example/wp-json/plugixa-car-rental/v1/extras');
curl_setopt_array($ch, [
    CURLOPT_CUSTOMREQUEST  => 'POST',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_USERPWD        => 'admin:' . getenv('WP_APP_PASSWORD'),
    CURLOPT_HTTPHEADER     => [
        'Content-Type: application/json',
    ],
    CURLOPT_POSTFIELDS     => json_encode([
        'name'         => 'Child seat',
        'description'  => 'For children from 9 to 18 kg.',
        'price'        => 8,
        'price_type'   => 'per_day',
        'max_total'    => 40,
        'max_quantity' => 2,
    ]),
]);
$response = json_decode(curl_exec($ch), true);
curl_close($ch);

const auth = Buffer.from(`admin:${process.env.WP_APP_PASSWORD}`).toString('base64');
const response = await fetch('https://your-site.example/wp-json/plugixa-car-rental/v1/extras', {
  method: 'POST',
  headers: {
    'Authorization': `Basic ${auth}`,
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    name: 'Child seat',
    description: 'For children from 9 to 18 kg.',
    price: 8,
    price_type: 'per_day',
    max_total: 40,
    max_quantity: 2,
  }),
});
const { data } = await response.json();

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