CartModules: GoPay Payment Gateway

Accept GoPay Payments in Your CS-Cart Store

Integrate GoPay — one of the most popular payment gateways in the Czech Republic and Slovakia — directly into your CS-Cart or Multi-Vendor store. Customers choose from a wide range of payment methods through GoPay's secure hosted checkout page.

Key Features

• Multiple Payment Methods — Cards, bank transfers, GoPay wallet, Apple Pay, Google Pay, PayPal, mPlatba, paysafecard, and more
• Redirect-Based Flow — No sensitive data touches your server (PCI SAQ A compliant)
• OAuth2 Authentication — Secure API communication using industry-standard OAuth2 client credentials
• Automatic Order Updates — Payment status is verified on customer return and via server-to-server notification
• Sandbox/Production Toggle — Switch between test and live environments from the admin panel
• Configurable Order Statuses — Map GoPay states (PAID, CANCELED, TIMEOUTED, REFUNDED) to any CS-Cart order status
• Dual Currency Support — CZK (Czech Koruna) and EUR (Euro)
• Idempotent Callbacks — Duplicate callbacks are safely ignored
• Order Line Items — Individual products and shipping are passed to GoPay for detailed payment records

Requirements

• CS-Cart or Multi-Vendor 4.x
• PHP 7.1 or higher
• GoPay merchant account with REST API credentials (GoID, Client ID, Client Secret)
• Store currency set to CZK or EUR

Supported Payment Methods

Through GoPay's hosted payment page, your customers can pay using:

• Payment cards (Visa, Mastercard, etc.)
• Bank transfers (Czech and Slovak banks)
• GoPay wallet
• Apple Pay
• Google Pay
• PayPal
• mPlatba (mobile carrier billing)
• paysafecard

How It Works

1. Customer selects GoPay at checkout and clicks "Place Order"
2. The addon authenticates with GoPay (OAuth2) and creates a payment
3. Customer is redirected to the GoPay hosted payment page
4. Customer selects their preferred payment method and completes the payment
5. Customer is redirected back to your store
6. The addon verifies the payment status and updates the order accordingly

Installation

1. Go to Add-ons > Manage add-ons, click Manual installation, and upload the addon zip
2. Activate the addon and enter the license key
3. Go to Administration > Payment methods and create a new payment method
4. Select "GoPay Payment Gateway" as the processor
5. Enter your GoID, Client ID, and Client Secret from the GoPay merchant portal
6. Select your currency (CZK or EUR)
7. Configure order status mappings as desired
8. Save and test with sandbox mode before going live

Country & Currency

This addon is designed for merchants selling in the Czech Republic and Slovakia. GoPay supports CZK (Czech Koruna) and EUR (Euro). Ensure your store's currency matches your GoPay account configuration.