pretix-thepay 9.0.20

The Pay payment provider for Pretix

The Pay payment provider plugin for Pretix. It creates payments via The Pay API, redirects customers to The Pay, and confirms payment status using the return and notification callbacks.

Features

• The Pay REST API integration (payment creation, status lookup)

• Redirect-based checkout flow

• Server-to-server notifications

• Refunds (full and partial)

• ISO 4217 currency support with correct minor units

• Demo mode via Test Mode setting

• Multi-language gateway support (Czech, Slovak, English)

Requirements

• Pretix >= 2.7.0

• Python >= 3.8

• requests >= 2.25.0

Installation

Install from PyPI:

pip install pretix-thepay

Or install from source:

pip install -e /path/to/pretix-thepay

Enable the plugin in pretix.cfg:

[pretix]
plugins = pretix_thepay

Restart Pretix after enabling the plugin.

Configuration

In the Pretix control panel, enable The Pay and configure:

• Merchant ID: Your The Pay merchant ID

• Project ID: Your The Pay project ID

• API Password: Your The Pay API password

• Language: Default language for the payment gateway

• Test Mode: Enable to use the demo environment

Behavior

1. The customer selects The Pay.

2. Pretix creates a payment at The Pay and redirects the customer.

3. The customer completes payment on The Pay.

4. Pretix confirms the payment by querying The Pay from the return URL and from notifications.

Notes

• Test Mode switches the API base URL to the demo environment.

• The Pay requires a customer name plus email or phone; Pretix order data is used.

Refunds

Refunds are initiated from Pretix and sent to The Pay. The plugin supports full and partial refunds for payments that support automatic refunds in The Pay.

Troubleshooting

Payment not created

• Verify Merchant ID, Project ID, and API Password

• Check Pretix logs for The Pay API response details

• Ensure the customer has a name and email or phone

Notifications not arriving

• Make sure Pretix is reachable from The Pay (public URL)

• Confirm your server IP is allowed in The Pay administration

Docker

For Pretix in Docker:

FROM pretix/standalone:stable
USER root
RUN pip3 install pretix-thepay
USER pretixuser
RUN cd /pretix/src && make production

License

Apache Software License 2.0

References

• Pretix Plugin Development Guide

• The Pay API Documentation

• The Pay OpenAPI Spec