Razorpay - Code Snippet

Code

import Head from "next/head";
import styles from "../styles/Home.module.css";

export default function Home() {
  async function displayRazorpay() {
    const res = await loadRazorpay();

    if (!res) {
      alert("Razorpay SDK Failed to load");
      return;
    }

    // Make API call to the serverless API
    const data = await fetch("/api/razorpay", { method: "POST" }).then((t) =>
      t.json()
    );
    var options = {
      key: process.env.RAZORPAY_KEY, // Enter the Key ID generated from the Dashboard
      name: "Carson Rodrigues Pvt Ltd",
      currency: data.currency,
      amount: data.amount,
      order_id: data.id,
      description: "Thankyou for your test donation",
      image: "https://carsonrodrigues.com/logo.png",
      handler: function (response) {
        alert(response.razorpay_payment_id);
        alert(response.razorpay_order_id);
        alert(response.razorpay_signature);
      },
      prefill: {
        name: "Carson Rodrigues",
        email: "rodriguescarsonwork@gmail.com",
        contact: "9999999999",
      },
    };

    const paymentObject = new window.Razorpay(options);
    paymentObject.open();
  }
  const loadRazorpay = () => {
    return new Promise((resolve) => {
      const script = document.createElement("script");
      script.src = "https://checkout.razorpay.com/v1/checkout.js";
      // document.body.appendChild(script);

      script.onload = () => {
        resolve(true);
      };
      script.onerror = () => {
        resolve(false);
      };

      document.body.appendChild(script);
    });
  };

  return (
    <div className={styles.container}>
      <Head>
        <title>Create Next App</title>
        <link rel="icon" href="/favicon.ico" />
      </Head>

      <main className={styles.main}>
        <h1 className={styles.title}>
          Welcome to{" "}
          <a href="https://github.com/rodriguescarson">
            Razorpay Payments with Next.js
          </a>
        </h1>

        <div className={styles.makePayment}>
          <a onClick={displayRazorpay}>
            <h3>Make Payment &rarr;</h3>
          </a>
        </div>
      </main>
    </div>
  );
}

const Razorpay = require("razorpay");
const shortid = require("shortid");

export default async function handler(req, res) {
  if (req.method === "POST") {
    // Initialize razorpay object
    const razorpay = new Razorpay({
      key_id: process.env.RAZORPAY_KEY,
      key_secret: process.env.RAZORPAY_SECRET,
    });

    // Create an order -> generate the OrderID -> Send it to the Front-end
    // Also, check the amount and currency on the backend (Security measure)

    const payment_capture = 1;
    const amount = 499;
    const currency = "INR";
    const options = {
      amount: (amount * 100).toString(),
      currency,
      receipt: shortid.generate(),
      payment_capture,
    };

    try {
      const response = await razorpay.orders.create(options);

      res.status(200).json({
        id: response.id,
        currency: response.currency,
        amount: response.amount,
      });
    } catch (err) {
      res.status(400).json(err);
    }
  } else {
    // Handle any other HTTP method
  }
}

Usage

Create an Account on Razorpay

Head over to Razorpay and create an account
Generate the API keys which can be found in the Test Mode dashboard
Store the API keys in environment variables, example environment file is provided in the source code.
We use serverless functions (api routes in Next.js) which acts as our backend to create order_id.