Google Pay on web without Embed

It is possible to use Google Pay on the web without the SDK. To learn how to integrate Google Pay, following Google’s tutorial is recommended.

The steps below highlight any differences and specifics for the API.

About this integration

Even without Embed, there is only minimal configuration required to get set up to process Google Pay. There is no need to sign up for a Google Developer account with this integration.

For Android apps which use this option with WebViews, please note that platform specific Android Google Pay APIs must be invoked. Please refer to Google’s FAQ for more information.

Enable Google Pay

To enable Google Pay, head over to your dashboard and then go to Connections -> Catalog -> Google Pay.

Next, fill in your merchant name and the one or more domain names where you want to use Google Pay.

Integrate Google Pay

The following steps highlight the integration points with the system using Google’s tutorial for Google Pay.

Fetch a Google Pay session

First, before you can render a Google Pay button, you need to call the API to get a token and your gateway ID.

Call the POST /digital-wallets/google/session API with the domain you want to host Google Pay on. This needs to be the full domain including any subdomains like www..

Request

{ "origin_domain": "www.example.com" }

This returns your gateway merchant ID as well as a JWT that authorizes running on your domain.

Response

{
  "gateway_merchant_id": "app.gr4vy.sandbox.example.default",
  "token": "eyJhbGciOiJFUzI1NiIsInR5cCI....NwRL9ZZg0N--ZyP6I0dDfHHoWhVkrHpQ"
}

Set gateway and merchant ID

Next, in step 2 of Google’s tutorial you are instructed to request a payment token for your provider.

In our case, the value for gateway needs to be set to gr4vy, and the value of gatewayMerchantId needs to be set to the value you received from our session API in the previous step.

const tokenizationSpecification = {
  type: "PAYMENT_GATEWAY",
  parameters: {
    gateway: "gr4vy",
    gatewayMerchantId: "app.gr4vy.sandbox.example.default",
  },
};

The instance ID is the unique identifier for the deployment of the system and is included in every API call. Together with the environment (sandbox or production) it is used to connect to the right APIs, as well as dashboard.

Set the merchant info

Next, in step 8, you need to set a merchantInfo object. This authorizes accepting Google Pay on your domain.

When setting the merchantInfo object, make sure to set the token returned from the session API, your merchant name, the merchant ID, and the full domain you passed to the session API (including any subdomains like www.)

const merchantInfo = {
  authJwt: "eyJhbGciOiJFUzI1NiIsInR5cCI....NwRL9ZZg0N--ZyP6I0dDfHHoWhVkrHpQ",
  merchantId: "BCR2DN4T7C3KX6DY", // This identifies our system
  merchantName: "Example App",
  merchantOrigin: "www.example.com",
};

OR_BIBED_11 / OR_BIBED_6 - If you were to encounter any kind of OR_BIBED error you likely did not pass the right domain to our API, or you did not pass the same domain to our session API and the merchantInfo object.

Create a transaction

In step 10 of Google’s tutorial, within the onPaymentAuthorized function you will have a paymentData that needs to be sent to the gateway. You can send this object to our POST /transactions endpoint either directly or via your server.

The payment method used needs to contain the data from the Google Pay payload.

Payment method data

{
  "amount": 1299,
  "currency": "AUD",
  "country": "AU",
  "payment_method": {
    "method": "googlepay",
    "token": "[paymentData.paymentMethodData.tokenizationData.token]",
    "card_suffix": "[paymentData.paymentMethodData.info.cardDetails]",
    "card_scheme": "[paymentData.paymentMethodData.info.cardNetwork]",
    "redirect_url": "https://example.com/callback"
  }
}

Providing a redirect_url is strongly recommended, just in case any connection is configured to use 3-D Secure. This URL is appended with both a transaction ID and status (for example https://example.com/callback?transaction_id=123 &transaction_status=capture_succeeded) after 3-D Secure has been completed.

Test Google Pay

To test Google Pay visit the site that has your integration loaded on it. Please follow the Google Pay documentation with further guides on how to add test cards for use in a sandbox environment.