Not able to receive value in response in flutter to cashfree API-CodePudding

I'm trying to receive response order_token from test API https://sandbox.cashfree.com/pg/orders which is used to create session of a payment gateway. Here is the code.


  CFEnvironment environment = CFEnvironment.SANDBOX;

  Future<dynamic> createOrder() async {
    var response = await http.post(
      Uri.https('https://sandbox.cashfree.com/pg/orders'),
      headers: {
        'Content-Type': 'application/json',
        'x-client-id': 'your x-client-id',
        'x-client-secret': 'your x-client-secret',
        'x-api-version': '2022-01-01',
        'x-request-id': 'developer_name',
      },
      body: jsonEncode(
        {
          "order_id": widget.cartId,
          "order_amount": widget.grandTotal,
          "order_currency": "INR",
          "order_note": "Additional order info",
          "customer_details": {
            "customer_id": widget.address.id,
            "customer_name": "name",
            "customer_email": widget.email,
            "customer_phone": widget.address.phone,
          }
        },
      ),
    );
    if (response.statusCode == 200) {
      if (jsonDecode(response.body)['status'] == 'OK') {
        debugPrint(jsonDecode(response.body)['order_id']);
        debugPrint('log');
        Logger.i(response.body);
        
        return jsonDecode(response.body)['order_id'];
      }
    }
    return '';
  }


  createSession() {
    createOrder().then((value) {
       try {
      var session = CFSessionBuilder()
          .setEnvironment(environment)
          .setOrderId(widget.cartId!)
          .setOrderToken(value)
          .build();
      return session;
    } on CFException catch (e) {
      debugPrint(e.message);
    }

    });
   
    return null;
  }

But the response seems to null and payment gateway doesn't open. What might be going wrong with my code? I tried printing response but there in null value there,What might be going wrong? How do I get a response? I've done this in postman I get a response.

CodePudding user response：

replace header placeholders with actual values like your x-client-secret and others

CodePudding user response：

Try this

var decodedResponse = jsonDecode(utf8.decode(response.bodyBytes)) as Map;
orderId = decodedResponse["order_id"] as String;
orderToken = decodedResponse["order_token"] as String;

Once the order is created and session is created, there are further steps, then only the checkout page will open. Refer this example - https://pub.dev/packages/flutter_cashfree_pg_sdk/example

Note :- Ideally, you shouldn't be creating order from app level. It should be done from your backend (Move the order creation to your backend).