Prisma•7mo ago

Relation not included in the generated types

Hello, I have the following model, generated from a database-first approach.

model Entry {
  project       String    @db.Uuid
  description   String
  comment       String?
  status        String
  projects      Projects  @relation(fields: [project], references: [uuid], onDelete: NoAction, onUpdate: NoAction, map: "entry_projects_uuid_fk")

  @@map("entry")
}

model Projects {
  uuid         String      @id(map: "projects_pk") @default(dbgenerated("gen_random_uuid()")) @db.Uuid
  name         String
  entry        Entry[]

  @@map("projects")
}

model Entry {
  project       String    @db.Uuid
  description   String
  comment       String?
  status        String
  projects      Projects  @relation(fields: [project], references: [uuid], onDelete: NoAction, onUpdate: NoAction, map: "entry_projects_uuid_fk")

  @@map("entry")
}

model Projects {
  uuid         String      @id(map: "projects_pk") @default(dbgenerated("gen_random_uuid()")) @db.Uuid
  name         String
  entry        Entry[]

  @@map("projects")
}

The query:

const entries: Entry[] = await prisma.entry.findMany({
        include: {
            projects: true,
        },
    });

const entries: Entry[] = await prisma.entry.findMany({
        include: {
            projects: true,
        },
    });

...returns the following data:

[
    {
        project: '5d117ed0-1391-4925-bde0-22412825cd54',
        description: 'xxxx',
        comment: 'xxx',
        status: 'xxx',
        projects: {
            uuid: '5d117ed0-1391-4925-bde0-22412825cd54',
            name: 'xxx'
        }
    }
]

[
    {
        project: '5d117ed0-1391-4925-bde0-22412825cd54',
        description: 'xxxx',
        comment: 'xxx',
        status: 'xxx',
        projects: {
            uuid: '5d117ed0-1391-4925-bde0-22412825cd54',
            name: 'xxx'
        }
    }
]

Unfortunately, the generated Prisma type does not include the relation "projects". This means, the following typing does not include the relation. const entries: Entry[] = await prisma.entry.findMany({ ... }) Any idea why that is?

11 Replies

janglad•7mo ago

can you run Prisma generate and try restarting your IDE?

battlesheep123OP•7mo ago

I did, but it doesn't change anything.

battlesheep123OP•7mo ago

Could this be a "works as designed"? Sounds very much like this when looking at the docs: https://www.prisma.io/docs/orm/prisma-client/type-safety/operating-against-partial-structures-of-model-types

Operating against partial structures of your model types | Prisma D...

This page documents various scenarios for using the generated types from the Prisma namespace

janglad•7mo ago

ooh wait sorry I completely misread your question so if you want to manually type this you can do Prisma.EntryGetPayload<{include:{projects:true}}>

battlesheep123OP•7mo ago

Could you please provide the complete code line? Not sure exactly what you mean. Thanks man! Ahh, I see... do you mean? const entries: Prisma.EntryGetPayload<{ include: { projects: true } }>[] = await prisma.entry.findMany({ ... })

janglad•7mo ago

yup altho FWIW if you're really just doing that I don't see why you'd type it yourself instead of getting the type from the return from findMany

battlesheep123OP•7mo ago

So you are saying I shouldn't type const entries myself and just keep it as const entries = await prisma.entry.findMany({ ... })?

janglad•7mo ago

yes There are some differing opinions about the extend of this but I personally almost always let TS infer types (so don't type things myself) whenever it's possible

battlesheep123OP•7mo ago

And you still get code completion if it's typed automatically?

janglad•7mo ago

yes

battlesheep123OP•7mo ago

Ohh that's great! Thank you very much

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Relation not included in the generated types