Bug: Past orders not displaying

[Sydney-M-Sharp]

Description of PR that completes issue here...

Changes

• added decorator to order bangazonapi/models/order.py
• added product serializer to order line item serializer to produce total price
• Item 3

Requests / Responses

If this PR contains code that defines a new request/response, or changes an existing one, please put the JSON representations here.

Request

GET /order Adds a new line item field called "total_price"

Responce example listed below

{
        "id": 1,
        "url": "http://localhost:8000/orders/1",
        "created_date": "2019-08-16",
        "payment_type": {
            "id": 1,
            "url": "http://localhost:8000/paymenttypes/1",
            "merchant_name": "Visa",
            "account_number": "24ijio68948fj8439",
            "expiration_date": "2020-01-01",
            "create_date": "2019-11-11"
        },
        "customer": "http://localhost:8000/customers/5",
        "lineitems": [],
        "total_price": 0
    },

Testing

Description of how to test code... run GET request for "http://localhost:8000/orders/1" and insure the ""total_price"" field has been added.

• [ ] Run migrations
• [ ] Run test suite
• [ ] Seed database

Related Issues

• Fixes #35

[Sydney-M-Sharp]

Updated the api to now filter the orders rather then the client side.