Creating Charges for Stripe with React and Netlify functions Part 3
Part 3 of a 3 part tutorial - create a lambda to access stripes api and process charges
This is the third part of the a three part series that explains how to set up stripe react elements and process charges using Stripes API. If you want to read the first part which sets up your front end, click here. This part will focus on processing charges using a lambda. Lets hop right in!
Setting up
The only package that we will need for this lambda is the official Stripe package.
npm install stripe --saveor
yarn add stripeCode
Here is the full code example
var stripe = require("stripe")("sk_test_key");
module.exports.handler = (event, context, callback) => {
const requestBody = JSON.parse(event.body);
const token = requestBody.token.id;
const amount = requestBody.charge.amount;
const currency = requestBody.charge.currency;
const email = requestBody.charge.email;
return stripe.charges.create({ // Create Stripe charge with token
amount,
currency,
receipt_email: email,
description: 'Serverless Stripe Test charge',
source: token,
})
.then((charge) => { // Success response
const response = {
statusCode: 200,
body: JSON.stringify({
message: `Charge processed succesfully!`,
charge,
}),
};
callback(null, response);
})
.catch((err) => { // Error response
const response = {
statusCode: 500,
body: JSON.stringify({
error: err.message,
}),
};
callback(null, response);
})
};starting off with the first line, it just initializes Stripe with your API key. Make sure you are using the test key while you’re developing your app.
var stripe = require("stripe")("sk_test_key");The next block will start to deconstruct our charge object that was passed to us from our front end.
const requestBody = JSON.parse(event.body);
const token = requestBody.token.id;
const amount = requestBody.charge.amount;
const currency = requestBody.charge.currency;
const email = requestBody.charge.email; The charge object contains a charge token that was created from Elements, the amount we would like to charge, the currency country code(USD for example) and an email address to send a receipt to our customer on a successful charge. The next block of code will attempt to create a new charge.
return stripe.charges.create({ // Create Stripe charge with token
amount,
currency,
receipt_email: email,
description: 'Serverless Stripe Test charge',
source: token,
}) After we get our new charge, either one of two things will happen. If it was successful, we would return an object with a 200(OK) status code and message stating the charge was successful. If the charge wasn’t succesful, we return 500 and the error message that the Stripe API returned.
