How to send Stripe customer ID to Parse - node.js

Question

I've managed to create Stripe customers through Parse using this function:
Parse.Cloud.define("customer", function(request, response){
stripe.customers.create({
email: request.params.useremail
}, function(err, customer) {
if(err){
console.log(err);
response.error(err);
}
else{
console.log(customer);
response.success(customer);
});
});
However, I would like to then be able to send the customer ID that is created to Parse under the current user's data as "cusToken", the same way that "email", "username" and whatnot are stored in the User class.

Answer 1

There are two assumptions that will simplify this code, the first is that the client making the call always does so on behalf of it's logged-in user, not some other user. The second is that stripe create answers a promise. Assuming that:
Parse.Cloud.define("customer", function(request, response) {
var user = request.user;
stripeCreateP({ email: user.email }).then(function(customer) {
user.set("someUserProperty", customer.someStripeProperty); // as an example
return user.save();
}).then(function(result) {
console.log(customer);
response.success(customer);
}, function(err) {
console.log(err);
response.error(err);
});
});
If the stripe api doesn't return a parse Promise, you can "promisify" it as follows...
function stripeCreateP(params) {
var p = new Parse.Promise();
stripe.customers.create(params, function(err, customer) {
if (err) {
p.resolve(customer);
} else {
p.reject(err);
}
});
return p;
}
...and call that with the email param object...
stripeCreateP({ email: user.email }).then( ...
If your app calls this for a user other than the client's logged in user, then you will need to pass user email in request.params as you do in the OP, and furthermore, you'll need to give yourself permission in the code to save a user other than the current one, then you can precede the save with a useMasterKey. See the docs for that.