Getting started with Payway and Klarna payments¶

Target audience: Developers, Stakeholders

Getting started checklist¶

Contact Klarna for playground credentials.
Setup payment provider configuration(s) based on given credentials.
Follow the implementation guide.
Test the implementation with Adeprimo and Klarna in a testing environment.

Klarna Credentials¶

API Credentials can be found in the Klarna Portal.
In Payway you set up Klarna Payments for one or more titles. That means you can have one or more Klarna Payments configurations.
For test/staging environment you'll probably only need one set of Klarna credentials.
For production depending on how you want to split your orders/economy you may want separate credentials for each Payway title.

The basic implementation¶

To place your first Klarna Payments order with Payway, a purchase session will have to be established.

Create session¶

To establish your first session, the following parameters are required:

Parameter	Description	Example Value
code	The easiest way is to navigate to PAP -> Packages & Campaigns, and locate the product that you wish to sell. Once located, you will find the product code both in the table view as well as in the edit view. If you wish to go via our API, you can read more here.	adeprimo_digital
period_id	You can find the associated period ids for a given product code using our API here.	585a4768edce2c5e6f000001
period_type	If the subscription is recurring or limited	limited / recurring
confirmation_url	URL to your confirmation page for the customer	https://adeprimo.se/receipt

While more parameters can be defined, this is all you need to know for now.

After having defined these parameters, you will want to perform the following HTTP request, including the payload above:

curl --request POST \
  --url https://payway-api.stage.adeprimo.se/external/api/v1/klarna_payments/create_session \
  --header 'accept: application/json' \
  --header 'authorization: Bearer token' \
  --header 'content-type: application/json' \
  --data '{
            "code": "",
            "period_id": "",
            "period_type": "",
            "confirmation_url": ""
          }'

Now that you have a session, you can use it to start the purchase and be that much closer to a finalized order!

Once you have the klarna_client_token from the session response you are ready to build the Klarna Payment Widget on your purchase page. More details on how you do this can be found in the Klarna documentation. The sample application also contains a working implementation of the Klarna Payment Widget.

Authorize purchase against Klarna¶

When the user presses the buy button you must, using javascript, perform an authorized call to Klarna. You will in return get a authorization_token.

Example without error handling:

var btn = document.getElementById("approve_purchase");
var klarna_authorization_token_input = document.getElementById('klarna_authorization_token');
var form = document.getElementById('authorize_form');
var payment_method_category = 'direct_debit/pay_now or any of the payment methods available to you in your Klarna payments setup.'

btn.addEventListener("click", function() {
Klarna.Payments.authorize({
    payment_method_category: payment_method_category
},{}, function (response) {
    if(response.approved) {
        klarna_authorization_token_input.value = response.authorization_token;
        form.submit(); //post the authorization token to your backend
    }
});

Place order¶

To create your first order with Payway, the following parameters are required:

Parameter	Description	Example Value
klarna_authorization_token	The authorization token acquired when creating the session	klarna_authorization_token
klarna_payments_session_id	The session id acquired when creating the sesssion	klarna_payments_session_id
browser_ip	The IP address of the customer	127.0.0.1
browser_language	The browser language used by the customer	sv-SE
browser_user_agent	The customer's user agent	Mozilla/5.0 (Windows NT 10.0; Win64; x64)