The prisma/seed.ts seed file synchronizes Stripe products and prices with a local database. You should make chnages to the app/modules/stripe/plans.ts file this is where you can set plan details, like name and prices for different currencies. When you first run npx prisma migrate dev --name init the seed.ts file will run and populate your local database with users and roles. Plus it will contact stripe and create products and prices for you. The seed.ts file is designed to keep your local or production database in sync with Stripe, with Stripe acting as the source of truth. Here’s how the seed file works:

​
1. Update or Create Existing Products

The updateOrCreateProducts function:
  • Fetches all products from Stripe
  • For each product:
    • Retrieves its prices from Stripe
    • Updates or creates a corresponding record in the local database
    • Synchronizes the product’s prices in the database

​
2. Create New Products

The createNewProducts function:
  • Checks for products defined in PRICING_PLANS that don’t exist in Stripe
  • For each new product:
    • Creates the product in Stripe
    • Creates associated prices in Stripe
    • Adds the product and its prices to the local database

​
Key Points

  • Uses Stripe API to fetch and create products and prices
  • Uses Prisma ORM to interact with the local database
  • Handles both one-time (‘lifetime’) and recurring price models
  • Ensures database reflects the current state of products in Stripe
After running this seed file, your local database will be in sync with your Stripe account’s products and prices.