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Checkout Service

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The Checkout Service provides a pre-built, hosted checkout page that simplifies the payment process for businesses. The Checkout Service is much easier to integrate, requiring minimal code and effort from the merchant’s side. It’s designed for businesses that want to avoid the complexity of building and managing a custom payment flow.

Hosted Payment Flow

With the Checkout Service, users are redirected to a secure, hosted checkout page maintained by PortOne, where they can complete the transaction. After payment, they are redirected back to the merchant's site or app.

Ideal for Quick Setup

This service is best suited for businesses or applications that need a payment solution up and running quickly without the need for deep customization or development resources.

Customization Options

Unlike the Payment Service, which allows for fully customized, branded checkouts, the Checkout Service is designed to be fast and easy to integrate.

While the Checkout Service is more limited in terms of customization compared to the Payment Service, merchants can still adjust certain elements such as branding (logo, colors) to ensure a consistent look.

Use Case

Ideal for small to medium businesses or apps that prioritize speed of integration over full control of the user experience.

Integration flow

The sequence diagram below illustrates the flow for integrating the Checkout service via the Web SDK

Once the user initiates checkout via the Merchant's cart page:

  • The Merchant (front end) requests a JWT from the Merchant (Back end)
  • The Merchant (front end) passes the JWT to initialize the PortOne SDK and then calls PortOne Web JS to create the checkout with payment details.
  • PortOne Server saves the request details, generates the checkout link, and returns it to the Merchant (front end).
  • Merchants can use this checkout link to redirect the user

💡

Passing the signature hash can be skipped if you whitelist your domain/IP/App

Recipes for a quick start

🔗
Create Checkout using Web SDK
Open Recipe
🦉
Generate signature using API
Open Recipe
🔑
Create JWT Token using API
Open Recipe

To generate the signature hash, you can also refer to Generate Signature Hash.

To generate the JWT token, you can also refer to Generate JWT Token.

Sample code

Use the following JS code snippet to initiate the payment in the checkout service using the respective supported payment channels (e.g. MomoPay, ZaloPay, Mastercard, etc).

<script>
const portone = new window.PortOne({
    // Your PortOne Key
    portOneKey: 'pptafmcddmszvgXl',
    jwtToken: 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJOUFNrWlpZZWZHeUt2QnhpIiwiaXNzIjoiQ0hBSVBBWSIsImlhdCI6MTYzMzMzOTAzMiwiZXhwIjoxNjczMzM5MDMy',
})
portone.checkoutService.checkout({
    "merchant_details": {
        "name": "Downy",
        "logo": "images/v184_135.png",
        "back_url": "https://demo.chaiport.io/checkout",
        "promo_code": "Downy350",
        "promo_discount": 0.0,
        "shipping_charges": 0.0,
    },
    "merchant_order_id":"MERCHANT1617366877238",
    "signature_hash": "10b664f803035a2146b26949041c2ce8c8693512e4b85159d3c43b001a714af0",
    "amount": 4000,
    "currency": "VND",
    "environment": "live",
    "description": "Product description",
    "country_code": "VN",
    "expiry_hours":24,
    "is_checkout_embed": true,
    "show_back_button": false,
    "show_shipping_details": false,
    "default_guest_checkout": true,
    "show_items": false,
    "success_url": "https://checkout.portone.cloud/success.html",
    "failure_url": "https://checkout.portone.cloud/failure.html"
})
</script>
Detailed script for checkout service (including optional fields.) 
<script>
const portone = new window.PortOne({
    // Your PortOne Key
    portOneKey: 'pptafmcddmszvgXl',
    jwtToken: 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJOUFNrWlpZZWZHeUt2QnhpIiwiaXNzIjoiQ0hBSVBBWSIsImlhdCI6MTYzMzMzOTAzMiwiZXhwIjoxNjczMzM5MDMy',
})
portone.checkoutService.checkout({
    "merchant_details": {
        "name": "Downy",
        "logo": "images/v184_135.png",
        "back_url": "https://demo.chaiport.io/checkout",
        "promo_code": "Downy350",
        "promo_discount": 0.0,
        "shipping_charges": 0.0,
    },
    "merchant_order_id":"MERCHANT1617366877238",
    "signature_hash": "10b664f803035a2146b26949041c2ce8c8693512e4b85159d3c43b001a714af0",
    "amount": 4000,
    "currency": "VND",
    "environment": "live",
    "description": "Product description",
    "order_details": [{
        "id":"1",
        "price": 2000,
        "name": "Stubborn Attachments",
        "quantity": 1
        },
        {
            "id":"2",
        "price": 2000,
        "name": "Stubborn Attachments",
        "quantity": 1
        }
    ],
    "billing_details": {
        "billing_name": "Test mark",
        "billing_email": "[email protected]",
        "billing_phone": "9998878788",
        "billing_address": {
          "city": "VND",
          "country_code": "VN",
          "locale": "en",
          "line_1": "address",
          "line_2": "address_2",
          "postal_code": "400202",
          "state": "Mah"
        }
    },
    "shipping_details": {
        "shipping_name": "xyz",
        "shipping_email": "[email protected]",
        "shipping_phone": "1234567890",
        "shipping_address": {
          "city": "abc",
          "country_code": "VN",
          "locale": "en",
          "line_1": "address_1",
          "line_2": "address_2",
          "postal_code": "400202",
          "state": "Mah"
      }
    },
    "country_code": "VN",
    "expiry_hours":24,
    "is_checkout_embed": true,
    "show_back_button": false,
    "show_shipping_details": false,
    "default_guest_checkout": true,
    "show_items": false,
    "success_url": "https://checkout.portone.cloud/success.html",
    "failure_url": "https://checkout.portone.cloud/failure.html"
})
</script>

Parameter list for Checkout Service

merchant_details
object · required
The JSON object for merchant details
name· required
string · The name of the merchant
logo
string · The logo of the merchant
back_url
string · The url of the merchant site
promo_code
string · The promo code enabled on the order by the merchant
promo_discount· required
double · The promo code discount amount on the order by the merchant
shipping_charges· required
number · The shipping charges set by the merchant
merchant_order_id
string · required

The unique merchant order reference generated by the merchant

signature_hash
string · required

The signature hash of transaction details generated as per docs

environment
string · required

The environment of the transaction is either live OR sandbox

amount
double · required

The amount of the transaction can be a floating-point number

currency
string · required

The currency of the transaction

country_code
string · required

The country_code of transaction

description
string · required

The description of the transaction

billing_details
object
The JSON object for billing details
billing_name
string · The billing first and middle name
billing_surname
string · The billing last name
billing_email
string · The billing email address
billing_phone
string · The billing phone number
billing_address###### object
The JSON object containing full address
city
string · City name
country_code
string · 2 digit country code
country_name
string · Full country name
locale
string · Region locale
line_1
string · Line 1 of the address
line_2
string · Line 2 of the address
postal_code
string · Postal code of the area
state
string · State/province of the country
shipping_details
object
The JSON object for shipping details
shipping_name
string · The shipping first and middle name
shipping_surname
string · The shipping last name
shipping_email
string · The shipping email address
shipping_phone
string · The shipping phone number
shipping_address
object ·
The JSON object containing full address
city
string · City name
country_code
string · 2 digit country code
country_name
string · Full country name
locale
string · Region locale
line_1
string · Line 1 of the address
line_2
string · Line 2 of the address
postal_code
string · Postal code of the area
state
string · State/province of the country
order_details
array of objects
The JSON array for order details
id
string · The unique identifier of the order-item
name
string · The name of the product
price
double · The unit price of the product
quantity
integer · The quantity of the product
image
string · The URL of the product image
additional_details###### object · Additional details about the order (This varies as per PSP specification)
success_url
string · required

The URL of the success page hosted by the merchant

failure_url
string · required

The URL of the failure page hosted by the merchant

pending_url
string

The URL of the pending page hosted by the merchant.

expiry_date
string

Date and time to expire the payment link in UTC format.

source
string · required

'default', 'api' or 'checkout' -- The Source of Payment Link creation.

show_shipping_details
boolean

Boolean flag to show shipping details in Checkout page.

show_back_button
boolean

Boolean flag to show back button in Checkout page.

default_guest_checkout
boolean

Boolean flag to enable default guest checkout

is_checkout_embed
boolean

Boolean flag to enable checkout embedding

notify_by_email
boolean

Boolean flag to notify customer by email

notify_by_phone
boolean

Boolean flag to notify customers by phone

override_auto_redirect
boolean

Boolean flag to abort auto redirection and use the response

user_configured_field1
string

Custom user-configured field 1

user_configured_field2
string

Custom user-configured field 2

user_configured_field3
string

Custom user-configured field 3

user_configured_field4
string

Custom user-configured field 4

user_configured_field5
string

Custom user-configured field 5


Embedding the checkout using iFrame

Embedding a checkout experience within an iFrame provides seamless, uninterrupted payment flows by allowing the checkout interface to load directly on your page. Instead of redirecting customers, the embedded checkout offers an improved user experience by keeping users on your website. Below are the key steps and necessary configuration details to implement the embedded checkout correctly.

Step 1: Configure Checkout Payload Settings

To ensure the checkout service behaves appropriately for embedding, you must set the following flags in your checkout payload:

is_checkout_embed: true
override_auto_redirect: false

Step 2: Adding the iFrame to Your Page

The following HTML code snippet must be added to your webpage to load the embedded checkout UI. This structure ensures that the checkout interface displays properly with appropriate styling, z-index management, and backdrop handling.

<div
  class="portone-container"
  id="portone-container"
  style="z-index: 1000000000;position: fixed;top: 0px;display: none;left: 0px;height: 100%;width: 100%;backface-visibility: hidden;overflow-y: visible;"
>
  <div
    class="portone-backdrop"
    style="min-height: 100%; transition: all 0.3s ease-out 0s; position: fixed; top: 0px; left: 0px; width: 100%; height: 100%; background: rgba(0, 0, 0, 0.5);"
  ></div>
  <iframe
    style="opacity: 1; height: 100%; position: relative; background: none; display: block; border: 0px none transparent; margin: 0px; padding: 0px; z-index: 2; width: 100%;"
    allowtransparency="true"
    frameborder="0"
    width="100%"
    height="100%"
    allowpaymentrequest="true"
    src=""
    id="portone-checkout-frame"
    class="portone-checkout-frame"
  ></iframe>
</div>;

Step 3: Using the Checkout Service

Once the above code is added to the page, you can implement the checkout service.

Key Considerations

  • Cross-Origin Restrictions
    Ensure your iFrame source (src URL) is from a trusted domain to avoid CORS (Cross-Origin Resource Sharing) issues.
  • Browser Compatibility
    While most modern browsers support iFrame embedding, certain restrictions on cookies or third-party scripts may affect the checkout experience. Ensure that allowpaymentrequest is enabled for secure payments.

Updated about 1 month ago

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