Add native enum support to select field with db.type: 'enum' by borisno2 · Pull Request #348 · OpenSaasAU/stack

borisno2 · 2026-03-01T10:28:09Z

Summary

This PR adds support for native database enums to the select field by introducing a new db.type: 'enum' option. When enabled, select fields generate Prisma enum blocks instead of storing values as plain strings, matching Keystone 6's enum select behavior.

Key Changes

Select field enum support: Added db.type: 'enum' option to the select field configuration that generates native Prisma enum types
Enum name derivation: Enum names are automatically derived from list and field names in PascalCase (e.g., PostStatus, UserRole)
Validation: Added validation to ensure enum values are valid Prisma identifiers (letters, digits, underscores; must start with a letter)
Prisma schema generation:
- Generates enum blocks in the schema for fields with db.type: 'enum'
- Uses unquoted default values for enum fields (@default(draft) not @default("draft"))
- Supports @map modifier for database column mapping
Type system: Updated getPrismaType signature to accept optional listName parameter for enum name generation and return enumValues array
Backward compatibility: Default behavior (no db.type or db.type: 'string') preserves existing String column behavior
Comprehensive tests: Added 14 new test cases covering enum validation, schema generation, optional/required fields, multiple enums, and snapshot testing

Implementation Details

Enum value validation uses regex pattern /^[A-Za-z][A-Za-z0-9_]*$/ to enforce Prisma identifier rules
The getPrismaType method now returns an optional enumValues array that triggers enum block generation
Enum definitions are collected in a first pass through all fields before model generation
TypeScript union types are generated identically for both string and enum select fields
Zod schema validation works the same for both types, validating against the provided options

https://claude.ai/code/session_0148fU5k5gN6nr4mAtGpjUZD

Adds native Prisma enum storage for the select field, matching Keystone 6's enum select behaviour. When db.type is 'enum', the Prisma generator emits an enum block (e.g. PostStatus) and uses the enum type in the model instead of String. Default values are unquoted per Prisma enum syntax. - SelectField type gains db.type ('string'|'enum'), db.map, and defaultValue - getPrismaType signature extended with optional listName and enumValues return - select() builder validates enum values are valid Prisma identifiers - Prisma generator collects enum definitions in a first pass and emits blocks - Tests added: select field unit tests, schema validation tests, generator tests https://claude.ai/code/session_0148fU5k5gN6nr4mAtGpjUZD

vercel · 2026-03-01T10:28:14Z

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Project	Deployment	Actions	Updated (UTC)
stack-docs	Ready	Preview, Comment	Mar 1, 2026 10:28am

changeset-bot · 2026-03-01T10:28:15Z

🦋 Changeset detected

Latest commit: c0c95dd

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 9 packages

Name	Type
@opensaas/stack-core	Minor
@opensaas/stack-cli	Minor
@opensaas/stack-auth	Minor
@opensaas/stack-rag	Minor
@opensaas/stack-storage	Minor
@opensaas/stack-tiptap	Minor
@opensaas/stack-ui	Minor
@opensaas/stack-storage-s3	Minor
@opensaas/stack-storage-vercel	Minor

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github-actions · 2026-03-01T10:34:58Z