Start a payment transaction.

Sample

For example, a user purchases a 100 IQD good at the merchant/partner(online merchant usually) , the merchant/partner calls this API to create the payment order first, the wallet will return the payment order ID and wallet cashier page URL to the merchant/partner, then merchant/partner can redirect user to wallet cashier page with the my.tradePay API.

1. The Mini Program calls this my.getAuthCode JSAPI with specific scopes(USER_ID) to request an authorization code.
2. The E-wallet App service calls authorization service to processes the authorization information.
3. The E-wallet backend verifies the authorization information, generates the authCode and returns.
4. The E-wallet App service returns the authCode to the Mini Program.
5. The Mini Program sends the authCode to the merchant backend.
6. The merchant backend calls the applyToken API with authCode to apply the accessToken.
7. The E-Wallet backend returns accessToken information to the merchant backend, such as customerId, accessToken, refreshToken, etc.
8. The Mini Program creates an order with customerId.
9. The merchant backend calls the payment API to initialte payment flow, including customerId as referenceBuyerId, paymentNotifyUrl(optional), etc.
10. The E-Wallet backend returns payment detail information the merchant backend, such as redirectionUrl.
11. The merchant backend passes the payment detail information to the Mini Program.
12. The Mini Program calls the my.tradePay JSAPI with redirectionUrl to conduct the payment.
13. The E-Wallet App Service displays the cashier page with order information, such as amount, order details, etc.
14. The user confirms the payment in the cashier page.
15. The E-Wallet App Service calls payment service and execute the payment process.
16. When the payment reaches the final status, the E-wallet backend returns the payment result to the Mini Program (Step 18).
17. Also the E-wallet backend notifies the merchant backend of the payment result with paymentNotifyUrl provided in Step 10(Step 19).
18. Finally, E-wallet backend notifies the user of the payment result via SMS/Email/Inbox message (Step 20).

Request

my.tradePay({
  paymentUrl: "https://www.wallet.com/cashier?orderId=xxxxxxx", // get the redirectUrl from the server first
  success: (res) => {
    my.alert({
      content: JSON.stringify(res),
    });
  },
  fail: (res) => {
    my.alert({
      content: JSON.stringify(res),
    });
  }
});

Parameters

The Mini Program could use paymentUrl to start a payment transaction according to the payment service provided by the host app.

Success Callback Function

The incoming parameter is of the Object type with the following attributes:

An example of a successfully returned message is as follows:

{
    "resultCode":"9000"
}

Result Code