Update Item in Cart

Updates the quantity or notes of an existing item in the cart.

HTTP Request

PATCH/api/shop/cart/items/:id

Authorization

Authorization

• Required: Yes
• Permission: Authenticated User
• Authentication: Token-based (Authorization: Token <your_api_key>)

Path Parameters

Parameter	Type	Required	Description
id	Integer	Yes	ID of the cart item to update

Request Body

Field	Type	Required	Description
quantity	Integer	No	Quantity to add (default: 1, minimum: 1)
notes	String	No	Customer notes for this item (max 500 chars)

Example Requests

🐍 Python

1import requests
2
3# Update item quantity and notes
4response = requests.patch('http://www.example.com/api/shop/cart/items/789', 
5  json={
6      'quantity': 5,
7      'notes': 'Updated notes'
8  },
9  headers={'Authorization': 'Token <your_api_key>'}
10)
11print(response.json())
12
13# Update only quantity
14response = requests.patch('http://www.example.com/api/shop/cart/items/789', 
15  json={
16      'quantity': 3
17  },
18  headers={'Authorization': 'Token <your_api_key>'}
19)
20print(response.json())

🌐 Curl

1# Update item quantity and notes
2curl -X PATCH "http://www.example.com/api/shop/cart/items/789" -H "Authorization: Token <your_api_key>" -H "Content-Type: application/json" -d '{
3  "quantity": 5,
4  "notes": "Updated notes"
5}'
6
7# Update only quantity
8curl -X PATCH "http://www.example.com/api/shop/cart/items/789" -H "Authorization: Token <your_api_key>" -H "Content-Type: application/json" -d '{
9  "quantity": 3
10}'

Status Codes

Code	Description
200	Item updated in cart successfully
400	Bad request — invalid product, insufficient stock, or validation error
401	Unauthorized — authentication required
404	Item not found
500	Internal server error

Response Fields

Field	Type	Description
id	Integer	Unique ID of the product
address	Integer	Selected delivery address ID
shipping_method	Integer	Selected shipping method ID
payment_method	Integer	Selected payment method ID
created_at	String (ISO 8601)	Timestamp when cart was created
updated_at	String (ISO 8601)	Timestamp when cart was last updated
count	Integer	Number of unique items in cart
quantity	Integer	Total quantity of all items
is_empty	Boolean	Whether the cart is empty
items_subtotal	Integer	Subtotal of all items before discounts
items_discount	Integer	Total discount amount on items
subtotal	Integer	Cart subtotal after item discounts
discount	Integer	Additional cart-level discount
total	Integer	Final cart total
items	Array	Array of cart items (see Cart Item fields)

Cart Item Fields

Field	Type	Description
id	Integer	Unique ID of the cart item
ref	String	Item reference (read-only)
product	Object	Product information with `id`, `name`, `image`
quantity	Integer	Item quantity
notes	String	Customer notes for this item
created_at	String (ISO 8601)	Timestamp when item was added
updated_at	String (ISO 8601)	Timestamp when item was last updated
unit_price	Integer	Price per unit (read-only)
unit_discount	Integer	Discount per unit (read-only)
subtotal	Integer	Item subtotal before discount (read-only)
discount	Integer	Total item discount (read-only)
total	Integer	Final item total (read-only)