Meetup Registration & PostgreSQL Giveaway System

This n8n workflow streamlines meetup event management by handling participant registrations through a webhook-triggered form that captures details like name, email, WhatsApp, and Discord. It maps and validates data before performing an upsert into a PostgreSQL database, ensuring no duplicates via unique identifiers. Upon success, it returns a confirmation response for a seamless user experience.

The giveaway component exposes a public webhook endpoint serving a fully functional HTML app for live winner selection. It queries the database for all participants, anonymizes sensitive data (e.g., masking WhatsApp), Base64-encodes IDs for privacy, and renders an interactive interface ideal for on-stage projections or browser use during events.

Benefits include time-saving automation for event organizers, data integrity with PostgreSQL, privacy-focused winner selection, and self-hosted compatibility with community nodes. Use cases: conferences, workshops, community meetups, or any event needing registration tracking and random draws. Note: Requires self-hosted n8n for community nodes.