CODEWITHSUNDEEP
node.jsflutterdartpayment-gatewaypaytm
Aman Kataria
Aman Kataria

Reputation: 616

(Flutter) Paytm Payment Gateway integration

I am building a flutter app which involves online payment from users of app.

I am planning to use Paytm payment gateway. I was planning to achieve this using WebView. I understand that for this I need to set up a server to generate checksum.

Now what I want to understand is how do I set up the server? According to this article: https://medium.com/@iqan/flutter-payments-using-paytm-7c48539dfdee I have to clone this github project: https://github.com/iqans/paytm-checksum-api-nodejs

Where do I upload this node.js project? Can this be uploaded to Firebase?

Or does it have to be uploaded on website hosting platform like hostgator?

Please explain this a bit, I don't now much about servers, I have just started using flutter.

Upvotes: 3

Views: 4491

Answers (2)

Sanket Babar
Sanket Babar

Reputation: 11

I think more than webview use of paytm sdk is best option for you because when you start transection its take a data from paytm app which is install in customers mobile.

There is a one plugin available for doing this called paytmkaro you use this but it's only work with production keys.

Before starting upload the server side code on server which is available on their documentation which is available here please don't make any changes on server side code it's used to generate a txn token on paytm server.

Change the minimum sdk version to 19

and just copy paste this code

` try {
  PaytmResponse paymentResponse = await _paytmKaro.startTransaction(
    url: serverside code url e.g. https://arcane-temple-61754.herokuapp.com/intiateTansection.php,
    mid: your Production merchant id,
    mkey: your merchant key,
    customerId:customer id (must be unique for every customer),
    amount: transection amount,
    orderId: Order Id (Order id must be unique Everytime for every order),
  );

  if(paymentResponse.status=="TXN_SUCCESS"){
    Navigator.push(context, MaterialPageRoute(builder: (context)=>txnSuccessful(paytmResponse: paymentResponse,)));
  }
  else if(paymentResponse.status=="TXN_FAILURE"){
    Navigator.push(context, MaterialPageRoute(builder: (context)=>txnFailed(paytmResponse: paymentResponse,)));
  }
} 
catch(e){
  print(e);
  key.currentState.showSnackBar(SnackBar(content: Text(e.toString())));      // platformVersion = 'Failed to get platform version.'
}`

and you are done.

Upvotes: 0

Darish
Darish

Reputation: 11491

For your convenience, it is more easy for you to implement the payment gateway using webview.

Host the files provided by the payment SDK on your server to calculate the checksum.

Then you can initiate the transaction from your mobile app and calculate the checksum by calling your server side scripts. Then pass those values to the payment SDK.

Upvotes: 4

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