Frontend Capabilities

# Integrate Klarna Pay Now

Klarna Pay Now (opens new window) is a popular online banking method in Europe and a convenient payment method for your customers.

  • Germany
  • Austria
  • Netherlands
  • Sweden

This tutorial guides you to integrate Klarna Pay Now payments on your end using Chargebee.js and creating a subscription after the user checks out.

# Gateway prerequisites

Connect to a gateway that accepts Klarna Pay Now payments to your Chargebee instance. Chargebee supports Klarna Pay Now payments through the below gateways:

The following are the prerequisites for setting up the integration:

  1. Enable Klarna Pay Now (opens new window) via Adyen
  2. Configure Smart routing (opens new window)

# Setting up Chargebee JS

# Inserting chargebee.js script in your application

Include the following script in your HTML page. You need to do this only once per page.

<script src="https://js.chargebee.com/v2/chargebee.js"></script>
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# Initializing a Chargebee instance

Inside your JavaScript code, initialize chargebee with the publishable key (opens new window) once the page is loaded and get 'chargebee instance' object. This object is used further to create components.

Example:

var cbInstance = Chargebee.init({
	site: "site-name", // your test site
	domain: "https://mybilling.acme.com" // this is an optional parameter.
    publishableKey: "test__"
})
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Learn more about ​​initializing a Chargebee instance.

# Create a Payment Intent

You should create a payment intent before submitting the form to authorize the payments.

payment_intent performs the essential function of tracking different events involved in a transaction. This includes:

  • Automatically changing its status based on the outcome of authorization and capture events.
  • Automatically refunding in case of an error post-payment.

A payment_intent can be created at your server-side using create a payment intent API (opens new window) and returned to the client side. The payment method handler uses the created payment_intent internally to perform authorization.

Here's the sample code to create a payment_intent.

TIP

This must be done from your backend to avoid exposing sensitive data.

Example

curl  https://{site-name}.chargebee.com/api/v2/payment_intents 
    -u {fullaccess_api_key}:
    -d amount=500 
    -d currency_code="EUR"
    -d payment_method_type="klarna_pay_now"
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TIP

Initiate the above step as request from your front end.

Front end code:

  function createPaymentIntent() {
	return fetch('/payment-intents', {
		method: 'POST',
		body: JSON.stringify({
			amount: 500,
			currency_code: 'EUR',
			payment_method_type: 'klarna_pay_now'
		})
	}).then(function(response) {
		return response.json();
	}).then(function(responseJson) {
		return responseJson.payment_intent;
	});
}
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# Authorize payment intent

Follow these steps to integrate Klarna Pay Now on your website:

# 1. Set up Klarna Pay Now:

load Klarna Pay Now integration using cbInstance.load("klarna_pay_now").

# 2. Handle Payment:

Pass payment method name (klarna_pay_now), payment intent, and other applicable payment information mandated by the gateway as input parameters to the cbInstance.handlePayment() function, as this enables the function to handle Klarna Pay Now payments.

# Supported paymentInfo Parameters

TIP

Parameters marked with * are mandatory inputs.

Refer below to see the entire list of supported parameters that you can send for Klarna Pay Now:

Klarna Pay Now
Supported parameters in paymentInfo
paymentInfo
↳country*
paymentInfo
↳userEmail*
paymentInfo
↳lineItems*
[ {amount*
description*
unitAmount*
taxAmount*
id*
quantity* },
{…}]
paymentInfo
↳cardBillingAddress
↳
firstName;*
lastName;*
phone;
addressLine1;*
addressLine2;*
addressLine3;*
city;
state;
stateCode;
countryCode;*
zip;

Sample Code

cbInstance.load("klarna_pay_now").then(() => {
	cbInstance.handlePayment("klarna_pay_now", {
		paymentIntent: () => {
			return createPaymentIntent();
		},
		paymentInfo: {
		userEmail: "john.doe@gmail.com",
        country: "DE",
        lineItems:[{
                    amount:2500,
                    description : "shoes",
                    taxAmount:0,
                    unitAmount:2500,
                    id: "li_324r3r3rd32d",
                    quantity:1
                    },{
                    amount:2500,
                    description : "socks",
                    taxAmount:0,
                    unitAmount:2500,
                    id: "li_324r3r3rd32d",
                    quantity:1
                    }
                    ]
		}
	}).then(intent => {
		// SUCCESS!!! payment_intent is authorised.
		var response = fetch('/subscriptions', {
			method: 'POST',
			body: JSON.stringify({
				paymentIntentId: intent.id,
				plan_id: 'pro_plan',
				plan_quantity: 1,
				billingAddress: {
					...
				}, // provide billing address
				customer: {
					...
				} // provide customer details if the subscription is to be created for an existing <code>customer</code> in Chargebee.
			})
		}).then(function(response) {
			return response.json();
		});
	}).catch(err => {
		// OOPS!!! payment_intent is not authorised.
	});
});
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On successful authorization, the payment_intent status turns to authorized and Chargebee redirects you back to your website (payment authorization page).

Using webhooks

Use webhooks (opens new window) for production use, instead of making the subscription creation request from the client-side, it's more secure and reliable to respond to webhooks from Chargebee on the server-side. Listen to the payment_intent_updated (opens new window) event via webhooks and create the subscription when the payment_intent.status (opens new window) is authorized.

# Create a subscription

Pass the ID of the successfully authorized payment_intent to Chargebee’s create a subscription API (opens new window).

  • Curl

← Wallet-based Payments →