Lesson 08 · 10 min
Prisma errors: P2002, P2025
The database refused — turn its refusal into a clear API response.
When the database rejects a query, Prisma throws Prisma.PrismaClientKnownRequestError with a code field. The most common: P2002 — a unique constraint failed (the email is taken), P2025 — the record for update or delete wasn't found, P2003 — a foreign key constraint failed. Catch them and turn them into 409, 404, or 400, and leave everything else as 500.
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