93 lines
5.3 KiB
Markdown
93 lines
5.3 KiB
Markdown
---
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name: prisma-mongodb-upgrade
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description: Decision and migration guide for Prisma ORM MongoDB projects on v6, which have no upgrade path to v7. Use when a MongoDB project asks about upgrading Prisma, when "upgrade to prisma 7" comes up in a project with provider = "mongodb", or when evaluating a move to Prisma Next. Triggers on "upgrade prisma mongodb", "prisma 7 mongodb", "mongodb prisma migration", "prisma next mongodb".
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license: MIT
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metadata:
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author: prisma
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version: "0.1.0"
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---
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# Prisma MongoDB Upgrade Path
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MongoDB projects are the one Prisma cohort with no road into Prisma 7: **v6 is the terminal
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classic-ORM major for MongoDB, and v7 never ships a MongoDB connector**. The successor path
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is [Prisma Next](https://github.com/prisma/prisma-next), where MongoDB support is in Early
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Access with GA planned after Postgres. This skill frames the real decision — migrate to
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Prisma Next (the encouraged path), or stay on v6 where a hard blocker applies — and carries
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the migration mechanics.
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**Never do either of these:**
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- Never advise a MongoDB project to "upgrade to Prisma 7". The connector does not exist
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there. The `prisma-upgrade-v7` guide does not apply to MongoDB projects.
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- Never solve the version question by rewriting the app onto a SQL database. Changing the
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database engine is a separate, much larger decision that is not yours to make implicitly.
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## The version landscape
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| Version | MongoDB status |
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|---------|----------------|
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| Prisma ORM v6 | Fully supported (`mongodb` provider); latest 6.x is the current stable path; maintenance line |
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| Prisma ORM v7 | **No MongoDB connector — not an option, ever** |
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| Prisma Next | MongoDB support in **Early Access**, actively developed, GA planned after Postgres — the successor path for MongoDB projects |
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## The decision, up front
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**Migrating to Prisma Next is the encouraged path.** MongoDB support in Prisma Next is Early
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Access: functional and moving quickly, with GA planned after Postgres — and the Prisma team
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wants MongoDB users to migrate early and share feedback. The migration mechanics are
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detailed in the references.
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**Staying on the latest v6 remains a legitimate choice where a hard blocker applies** —
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stated plainly: the Next Mongo façade does not wrap transactions yet (the underlying driver
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is available directly; this is expected to change soon), and pre-1.0 minors can carry
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breaking changes with published upgrade recipes.
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### Decision table
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| Signal | Direction |
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|--------|-----------|
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| No blockers below apply | Migrate to Next; run the `verify-cutover-checklist` and share feedback with the Prisma team |
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| Greenfield / prototype / internal tool | Migrate to Next |
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| Codebase uses multi-document transactions (`$transaction`) — check with grep, do not ask | Plan raw-driver session equivalents first (see `client-api-mapping`), or stay on v6 until the façade wrapper lands |
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| Team cannot absorb pre-1.0 breaking upgrades between minors | Stay on v6 until GA |
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| Risk-averse but interested | Run a staged Next round-trip on a copy (see `verify-cutover-checklist`), then migrate |
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Note: the transactions gap is expected to close soon — this section will be updated when
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façade transactions merge in Prisma Next.
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### If staying on v6: hygiene (a deliberate stay, not neglect)
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- Pin the Prisma packages to the latest 6.x line and keep taking 6.x patch releases.
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- Track Prisma release notes and security advisories for the 6.x line.
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- Keep the classic v6 MongoDB setup: `url = env("DATABASE_URL")` in the schema, `db push`
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workflow, no SQL driver adapters (see `prisma-database-setup` for the v6 MongoDB shape).
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- Re-evaluate when Prisma Next's MongoDB is GA, or when blockers for trying EA are resolved.
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## Reference files
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| Reference | What it covers |
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|-----------|----------------|
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| `references/decision-stay-or-migrate.md` | The full decision framing, blocker checks, and stay-hygiene detail |
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| `references/schema-contract-mapping.md` | v6 schema (`mongodb` provider, `@db.ObjectId`, composite types) → Next contract concepts |
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| `references/client-api-mapping.md` | v6 client calls → Next equivalents, incl. raw escape hatches and transactions — names map, parity does not |
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| `references/migrations-mapping.md` | v6 `db push`-only story → Next's plan/migrate/verify/sign flow |
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| `references/verify-cutover-checklist.md` | No-data-moves verification: same DB, index parity, staged round-trip before cutover |
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## Verified against
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Behavioral claims about Prisma Next in this skill were verified against
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[prisma/prisma-next](https://github.com/prisma/prisma-next) at commit
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`a2791c5dd59d579b4b3052942ae7f8fe5e2ee852` (pre-1.0, ~v0.14/0.15 line). Prisma Next moves
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quickly in Early Access: **before acting on any Next-side claim, verify it against the
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version actually installed** (check the project's `@prisma-next/*` versions and the
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prisma-next skills installed with it). Next's Mongo target requires MongoDB 8.0+ and expects
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`mongodb@^7` as a user-supplied peer dependency.
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## Hand-off rule
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This skill is the **discovery bridge**, not a replacement for Prisma Next's own
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documentation. After a project switches to Prisma Next, run Prisma Next's `init`/skill
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installation and follow its own skills (quickstart, contract, queries, migrations, runtime)
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for day-to-day work — do not keep working from this skill's summaries.
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