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我正在尝试创建一个新的 GRANDstack 应用程序。数据库已经存在，所以我使用了“infer-schema.js”脚本来生成 gql 模式。当我运行 api 服务器时，我收到以下错误：

Error: Unknown directive "@relation".
13:42:38 api | Unknown directive "@relation".

这是一个新的 GRANDstack 项目 - 使用以下未触及的 index.js：

const driver = neo4j.driver(
  process.env.NEO4J_URI || 'bolt://localhost:7687',
  neo4j.auth.basic(
    process.env.NEO4J_USER || 'neo4j',
    process.env.NEO4J_PASSWORD || 'neo4j'
  )
)

/*
 * Create an executable GraphQL schema object from GraphQL type definitions
 * including autogenerated queries and mutations.
 * Read more in the docs:
 * https://neo4j.com/docs/graphql-manual/current/
 */

const neoSchema = new Neo4jGraphQL({ typeDefs, driver })

使用架构：

type Incredient {
   _id: ID!
   name: String!
   recipes: [Recipe] @relation(name: "HAS", direction: IN)
}

type Product {
   _id: ID!
   name: String!
   has_offer: [Offer] @relation(name: "HAS_OFFER", direction: OUT)
   HAS_OFFER_rel: [HAS_OFFER]
   has_quantity: [Quantity] @relation(name: "HAS_QUANTITY", direction: OUT)
   HAS_QUANTITY_rel: [HAS_QUANTITY]
}

type Offer {
   _id: ID!
   newPrice: Float!
   normalPrice: Float!
   products: [Product] @relation(name: "HAS_OFFER", direction: IN)
}

type Quantity {
   _id: ID!
   name: String!
   products: [Product] @relation(name: "HAS_QUANTITY", direction: IN)
}

type Recipe {
   _id: ID!
   name: String!
   has: [Incredient] @relation(name: "HAS", direction: OUT)
   HAS_rel: [HAS]
}

type HAS @relation(name: "HAS") {
  from: Recipe!
  to: Incredient!
  amount: Float!
  unit: String!
}

type HAS_OFFER @relation(name: "HAS_OFFER") {
  from: Product!
  to: Offer!
  discount: Float!
}

type HAS_QUANTITY @relation(name: "HAS_QUANTITY") {
  from: Product!
  to: Quantity!
  quantity: Float!
}
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1 回答 1

1

您不能对@neo4j/graphql（官方 Neo4j GraphQL 库）使用推断模式，它只能与已弃用的neo4j-graphql-js. 您正在尝试将neo4j-graphql-js兼容的架构放入@neo4j/graphql. 您应该更改@relation为@relationship关系属性，请参阅此。

于 2021-09-10T13:49:44.560 回答