[PYTHON] Try PayPay's developer tool "PayPay for Developers"

In July 2020, "PayPay for Developers," a tool for developers that can introduce PayPay to payments for EC sites and apps operated by the company, was released.

I would like to try it until the payment is completed in the sandbox environment.

Register with PayPay for Developers

First, register with PayPay for Developers. https://developer.paypay.ne.jp/

Once registered, you will have your API key and test user.

Install PayPay OPA SDK

This time, I will work on CentOS 7 with Python 3.6 and pip 3.6 installed.

pip3.6 install paypayopa

The PayPay OPA SDK version 0.6.0 has been installed.

Issuance of QR code

We will issue a QR code for payment using the PayPay app or a web payment implementation method that allows payment on a web page. Request a unique value for "merchant_payment_id".

import paypayopa

client = paypayopa.Client(auth=(API_KEY, API_SECRET), production_mode=False)

request = {
    "merchantPaymentId": "merchant_payment_id",
    "codeType": "ORDER_QR",
    "redirectUrl": "http://www.example.com/success",
    "redirectType":"WEB_LINK",
    "orderDescription":"Example - Mune Cake shop",
    "orderItems": [{
        "name": "Moon cake",
        "category": "pasteries",
        "quantity": 1,
        "productId": "67678",
        "unitPrice": {
            "amount": 1,
            "currency": "JPY"
        }
    }],
    "amount": {
        "amount": 1,
        "currency": "JPY"
    },
}

response = client.Code.create_qr_code(request)
print(response)

A response will be returned.

{
  "resultInfo": {
    "code": "string",
    "message": "string",
    "codeId": "string"
  },
  "data": {
    "codeId": "string",
    "url": "string",
    :
abridgement
    :
    "redirectUrl": "string",
    "redirectType": "WEB_LINK",
    :
abridgement
    :
  }
}

When you access the response url with your smartphone, you will be asked if you want to start PayPay.

• If PayPay is not installed, the payment web page will open. When you start PayPay and complete the payment, after 3 seconds you will be automatically redirected back to your web browser and redirected to the redirectUrl (such as the payment completion page).

The payment is now complete.

Please refer to here for how to log in as a test user of the PayPay app. https://paypay.ne.jp/developers-faq/sandbox_environment/post-43/

Payment confirmation

Use Get Payment Details to see if your payment is complete. Make a request using the "merchant_payment_id" mentioned earlier.

import paypayopa

client = paypayopa.Client(auth=(API_KEY, API_SECRET), production_mode=False)

response = client.Payment.get_payment_details("merchant_payment_id")
print(response)

Payment is complete when "SUCCESS" is returned in the response code.

{
  "resultInfo": {
    "code": "string",
    "message": "string",
    "codeId": "string"
  }
}

from now on

Ultimately, I would like to be able to select PayPay as the payment method on the EC site.

It is such an image.

1. Access the EC site with your smartphone's web browser
2. Press the button to purchase the product on the EC site
3. The PayPay app starts
4. Pay with the PayPay app
5. After payment is completed, automatically return to the web browser
6. Display the payment completion page on the EC site

To use it in production, you need to apply for a member store.

You can try the sandbox environment by registering with PayPay for Developers, so if you are interested, please try it.