新的Neo4jGraphQL({ typeDefs，驱动程序})会导致未知的指令错误

Question

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，会得到以下错误：

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

这是在一个新的GRANDstack项目上进行的--它有以下未触及的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 })

使用模式：

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!
}

Answer 1

您不能为@neo4j/graphql(正式的Neo4j GraphQL库)使用推断模式，它只能与不推荐的neo4j-graphql-js一起使用。您正在尝试将neo4j-graphql-js兼容的模式放入@neo4j/graphql中。您应该将@relation更改为@relationship，有关关系属性，请参阅这。