is a payment nonce required for every transaction with Braintrree? - paypal

Question

I'm developing a marketplace-like application that has support for payment processing through Braintree. However, most of my transactions will be quite small, and given the rate that Braintree charges, it's not feasible for me to process the transaction every time a user makes a purchase.
Therefore, I want to aggregate the payments on the backend, and charge users once they reach $X in accumulated expenditures, or once Y days have passed.
Is this method possible to implement given that each Braintree transaction seems to require a payment nonce? If not, can anyone suggest an alternative solution?
Much thanks.

Answer 1

To answer your question in your title in one sentence: NO, a payment nonce is NOT required for every transaction with Braintree.
Theoretically, it can be done by vaulting your buyer's payment method information into your Braintree account, and then charge with the vaulted payment method. A payment method is vaulted in Braintree with a token. The payment method token can then be used to make payments without requiring the buyer to be present.
However, the buyer must grant the payment method to you. This is typically done by the buyer providing his/her payment method information to you via a dropin form or a custom form, which returns a nonce and the information to you. This requires the buyer to be present.
I would suggest following the steps below of the Reference section of Braintree (https://developers.braintreepayments.com)
Transaction (how to make a basic one-time transaction)
Customer
Credit Card
Transaction (how to make a transaction without buyer presence)
PS, I said "theoretically" at the beginning, because if you can / cannot do it with vaulting, depends on your purchasing flow and also if your buyers are willing to do it that way.
PS again, vaulted payment method token can be used this way (in PHP):
Braintree_Transaction::sale(array(
'amount' => '10.00',
'paymentMethodToken' => $the_payment_method_token,
'options' => array(
'submitForSettlement' => true
)
));

Answer 2

For every Braintree transactions payment method nonce is not required. Buyer provides his/her information through dropin form or custom form, which returns the payment nonce method, we send the information to the braintree and get the payment_method_token. Written in python.
#login_required
def clienttoken(request):
result = braintree.Customer.create({
"first_name": "XXXX",
"last_name": "XXX",
"company": "XXX",
"email": "XXXX",
"phone": "312.555.1234",
"fax": "614.555.5678",
"website": "www.example.com",
"credit_card": {
"cardholder_name": "XXX",
"number": "XXXX",
"expiration_date": "XXX",
"options": {
"verify_card": True,
},
},
})
client_token = braintree.ClientToken.generate({"customer_id": result.customer.id})
request.session['customer_id'] = result.customer.id
return render(request, "braintree/checkout.html", {"client_token": client_token})
#csrf_exempt
def checkout(request):
customer_id = request.session['customer_id']
nonce = request.POST['payment_method_nonce']
result = braintree.PaymentMethod.create({
"customer_id": customer_id,
"payment_method_nonce": nonce,
"options": {
"verify_card": True,
}
})
return HttpResponse(result.payment_method.token)
We use payment_method_token for every transaction of braintree.
result = braintree.Transaction.sale({
"amount": "400",
"payment_method_token": "token",
"options": {
"submit_for_settlement": "true",
}
})