Fixed bug preventing order row details from displaying on order page

[nicholas-davison]

Added order total custom property to order model, included field in order serializer, changed filtered orders to only include completed orders

Changes

• Added filter parameter to include only orders that do not have a payment method included. Commented out the code block dealing with query parameters, as we are currently looking for all completed orders from the current user, regardless of their payment type.
• Added order total custom property to Order model that sums the order product prices
• Added corresponding get_total method to Order serializer, along with a total variable to be returned as a field in the order serializer

Requests / Responses

Request

GET /orders lists all orders, their associated line items, and the total cost of the each order.

Response

HTTP/1.1 200 OK

[
    {
        "id": 1,
        "url": "http://localhost:8000/orders/1",
        "created_date": "2019-08-16",
        "payment_type": "http://localhost:8000/payment-types/1",
        "customer": "http://localhost:8000/customers/5",
        "lineitems": [],
        "total": 0
    },
    {
        "id": 3,
        "url": "http://localhost:8000/orders/3",
        "created_date": "2019-03-26",
        "payment_type": "http://localhost:8000/payment-types/1",
        "customer": "http://localhost:8000/customers/5",
        "lineitems": [
            {
                "id": 7,
                "product": {
                    "id": 50,
                    "name": "Golf",
                    "price": 653.59,
                    "number_sold": 2,
                    "description": "1994 Volkswagen",
                    "quantity": 4,
                    "created_date": "2019-07-10",
                    "location": "Berlin",
                    "image_path": "http://localhost:8000/media/products/vehicle.png",
                    "average_rating": 3.25
                }
            },
            {
                "id": 8,
                "product": {
                    "id": 50,
                    "name": "Golf",
                    "price": 653.59,
                    "number_sold": 2,
                    "description": "1994 Volkswagen",
                    "quantity": 4,
                    "created_date": "2019-07-10",
                    "location": "Berlin",
                    "image_path": "http://localhost:8000/media/products/vehicle.png",
                    "average_rating": 3.25
                }
            },
            {
                "id": 9,
                "product": {
                    "id": 45,
                    "name": "Optima",
                    "price": 1655.15,
                    "number_sold": 1,
                    "description": "2008 Kia",
                    "quantity": 3,
                    "created_date": "2019-05-21",
                    "location": "Toronto",
                    "image_path": "http://localhost:8000/media/products/vehicle.png",
                    "average_rating": 0
                }
            }
        ],
        "total": 2962.33
    },
    {
        "id": 6,
        "url": "http://localhost:8000/orders/6",
        "created_date": "2019-07-01",
        "payment_type": "http://localhost:8000/payment-types/1",
        "customer": "http://localhost:8000/customers/5",
        "lineitems": [],
        "total": 0
    }
]

Testing

• [ ] In Postman, perform fetch request to /orders with the authtoken (9ba45f09651c5b0c404f37a2d2572c026c146694) of a user that has closed orders in the database.

Related Issues

• Fixes #10