无法在 Prisma 的一个模型中建立两个 1:1 关系。检测到不明确的关系

Question

我试图在 Prisma ORM 的一个模型中建立两个 1:1 关系，但出现以下错误：

Error validating model "Person": Ambiguous relation detected. The fields placeOfBirth and placeOfDeath in model Person both refer to Place. Please provide different relation names for them by adding @relation(<name>).

我的棱镜模式：

model Place {
    id              Int     @id @default(autoincrement())
    name            String
    persons         Person[]
}

model Person {
    id              Int     @id @default(autoincrement())
    name            String
    placeOfBirthId  Int
    placeOfDeathId  Int
  placeOfBirth    Place   @relation(fields: [placeOfBirthId], references: [id])
    placeOfDeath    Place   @relation(fields: [placeOfDeathId], references: [id])
}

完全不明白

Answer 1

您必须向 placeOfBirth 和 placeOfDeath 添加一个 name 字段。然后使用这些名称在 Place 模型中引用它们。

model Place {
  id     Int      @id @default(autoincrement())
  name   String
  Births Person[] @relation("Births")
  Deaths Person[] @relation("Deaths")
}

model Person {
  id             Int    @id @default(autoincrement())
  name           String
  placeOfBirthId Int
  placeOfDeathId Int
  placeOfBirth   Place  @relation("Births", fields: [placeOfBirthId], references: [id])
  placeOfDeath   Place  @relation("Deaths", fields: [placeOfDeathId], references: [id])
}

无法在 Prisma 的一个模型中建立两个 1:1 关系。检测到不明确的关系

Can't make two 1:1 relations in one model in Prisma. Ambiguous relation detected

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