Prisma generate: Field configuration to merge has duplicate field names

Question

Running prisma generate I encurred in this output and no code is generated.

prisma generate
Generating schema...
[ { species: { type: [Object], args: [Object] } },
  { species: { type: [Object], args: [Object] },
Generating schema !
 !    Field configuration to merge has duplicate field names.

What's wrong with my schema?

type User {
  id: ID! @unique
  email: String! @unique
  name: String!
  password: String!
  entries: [Entry!]!
  createdAt: DateTime!
  updatedAt: DateTime!
}

type Language {
  id: ID! @unique
  language: String! @unique
  createdAt: DateTime!
  updatedAt: DateTime!
}

type EntryScientificName {
  id: ID! @unique
  entry: Entry!
  isMain: Boolean!
  scientificName: String! @unique
  language: Language!
  createdAt: DateTime!
  updatedAt: DateTime!
}

type EntryName {
  id: ID! @unique
  entry: Entry!
  isMain: Boolean!
  name: String! @unique
  Language: Language!
  createdAt: DateTime!
  updatedAt: DateTime!
}

type Species {
  id: ID! @unique
  species: String! @unique
  description: String
  createdAt: DateTime!
  updatedAt: DateTime!
}

type Genus {
  id: ID! @unique
  genus: String! @unique
  description: String
  createdAt: DateTime!
  updatedAt: DateTime!
}

type Family {
  id: ID! @unique
  family: String! @unique
  description: String
  createdAt: DateTime!
  updatedAt: DateTime!
}

type Order {
  id: ID! @unique
  order: String! @unique
  description: String
  createdAt: DateTime!
  updatedAt: DateTime!
}

type Habitat {
  id: ID! @unique
  habitat: String! @unique
  description: String
  createdAt: DateTime!
  updatedAt: DateTime!
}

type Month {
  id: ID! @unique
  month: String! @unique
}

type Anthesis {
  id: ID! @unique
  entry: Entry
  fromMonth: Month! @relation(name: "FromMonth")
  toMonth: Month! @relation(name: "ToMonth")
  note: String
  createdAt: DateTime!
  updatedAt: DateTime!
}

type Nation {
  id: ID! @unique
  nation: String! @unique
  createdAt: DateTime!
  updatedAt: DateTime!
}

type Region {
  id: ID! @unique
  nation: Nation!
  region: String! @unique
  createdAt: DateTime!
  updatedAt: DateTime!
}

type DistributionDetail {
  id: ID! @unique
  detail: String!
  createdAt: DateTime!
  updatedAt: DateTime!
}

type GeographicDistribution {
  id: ID! @unique
  entry: Entry!
  region: Region!
  detail: DistributionDetail
  createdAt: DateTime!
  updatedAt: DateTime!
}

type Altitude {
  id: ID! @unique
  entry: Entry! @unique
  altitudeFrom: Int! @unique @constraint(min: -10894, max: 408000)
  altitudeTo: Int! @unique @constraint(min: -10894, max: 408000)
}

type Entry {
  id: ID! @unique
  name: [EntryName!]!
  scientificName: [EntryScientificName!]!
  species: Species
  genus: Genus
  family: Family
  order: Order
  biologicalForm: String
  plantDescription: String
  leafDescription: String
  flowerDescription: String
  fruitDescriptio: String
  chorologicalType: String
  habitat: [Habitat!]!
  geographicDistribution: [GeographicDistribution!]!
  altitude: [Altitude!]!
  etymology: String
  propertiesUses: String
  curiosities: String
  notes: String
  links: [Link!]!
  entryPicture: String
  draft: Boolean @default(value: "true")
  published: Boolean @default(value: "false")
  toBeReviewed: Boolean @default(value: "false")
  createdAt: DateTime!
  updatedAt: DateTime!
  author: User
}

type Link {
  id: ID! @unique
  createdAt: DateTime!
  updatedAt: DateTime!
  url: String!
  description: String!
  postedby: User
}

Errorname · Accepted Answer · 2018-12-10T08:27:19.280

Prisma generates a GraphQL schema based on your datamodel. Doing so, it generates plural types based on your types.

However, because the plural of Species is Species, Prisma now has two types with the same name, therefore, throws an error. (See the same issue with News)

You currently can't choose the pluralized name for a type or field (See issue).

It's a generally good advice to only have singular names for your types.

Prisma generate: Field configuration to merge has duplicate field names

1 Answers1