In the previous article we uncovered how to do Ruby on Rails online payments with Adyen using encrypted form without redirect of users to external checkout pages. Now it’s time for another type of integration: Hosted Payment Pages (HPP).
Why Ruby on Rails online payments with Adyen HPP
You can easily do Ruby on Rails online payments with Stripe, BrainTree, and many others. We have experience integrating these online payments to Ruby on Rails web app during just one day. However, competitive advantage of Adyen’s HPP is that in addition to PayPal and credit card, Adyen’s HPP can allow your Ruby on Rails direct bank payment, with such mathods as SEPA, SOFORT, iDEAL, etc.
HPP provides a secure, flexible and easy way for customers to purchase services and goods:
- Customers go to your site, then they select and add the services/items to a shopping cart.
- Next, they are redirected to the hosted payment page, where they enter the billing details to process the payment.
- After submitting they are redirected back to your web site, where they can see a summary information displaying the result of the payment processing.
- You can customise the look of the HPP using Adyen’s skin technology and toolset to create a seamless checkout for your customers.
Prepare account for using HPP
Login to the Adyen Customer Area, create a new skin and configure the allowed payment methods.
Generagte HMAC key to be used in your payment request’s signature and add a method to prepare your HPP URI:
def gs(i) # adyen merchant signature params escaping
i.gsub(':', ':').gsub('', '\')
end
def hpp_uri(order)
user = order.user
merchant_reference = "your_prefix_" + user.id.to_s + "_" + order.id.to_s + "_" + rand(99999999).to_s
merchant_account = ENV
payment_amount = (order.total*100).to_i.to_s
currncy = order.currency
session_validity = 1.day.from_now.strftime('%Y-%m-%dT%H:%M:%SZ')
ship_before_date = order.shipment.date.strftime('%Y-%m-%d')
# ---- merchant signature ----
string = "currencyCode:merchantAccount:merchantReference:paymentAmount:recurringContract:sessionValidity:shipBeforeDate:shopperEmail:shopperLocale:shopperReference:skinCode"
string += ':'+gs(currency)
string += ':'+gs(merchant_account)
string += ':'+gs(merchant_reference)
string += ':'+gs(payment_amount)
string += ':ONECLICK'
string += ':'+gs(session_validity)
string += ':'+gs(ship_before_date)
string += ':'+gs(user.email)
string += ':'+gs(I18n.locale.to_s)
string += ':'+gs(user.shopper_reference)
string += ':'+gs('YOUR_HPP_SKIN_CODE')
hmac = Order.create_hmac(string)
# ---- merchant signature ----
uri = ENV # 'https://test.adyen.com/hpp/pay.shtml'
uri += '?'
uri += "merchantSig="+Rack::Utils.escape(hmac)
uri += "&sessionValidity="+session_validity
uri += "&shipBeforeDate="+ship_before_date
uri += "&shopperLocale="+I18n.locale.to_s
uri += "&merchantAccount="+merchant_account
uri += "&paymentAmount="+payment_amount
uri += "¤cyCode="+currency
uri += "&skinCode="+'YOUR_HPP_SKIN_CODE'
uri += "&merchantReference="+merchant_reference
uri += "&shopperReference="+user.shopper_reference
uri += "&recurringContract=ONECLICK"
uri += "&shopperEmail="+user.email
end
Prepare your application to process HPP payments
Create a new endpoint in your Orders controller where user will be redirected after payment processing:
def payment_processed
return redirect_to root_url, alert: 'Adyen request invalid' unless params
order_id = params.split('_').to_i
order = Order.find order_id
if .include?(params.downcase) ||
Adyen.capture(params, (order.total*100).to_i, order.currency) != ''
# process failed payment
redirect_to order, alert: I18n.t('payment_failed')
else
# process success payment
redirect_to order
end
end
Add this endpoint to your Adyen’s HPP skin:
In your Orders controller #create action setup redirect to Adyen HPP:
def create
order = Order.new(order_params)
if order.save
redirect_to Adyen.hpp_uri(order)
else
render :new
end
end
And now you are ready for global online payments and EU direct bank payments!