javascript - Apollo GraphQL 嵌套突变
问题描述
在嵌套突变方面需要一些帮助。
抽象的场景是这样的:
我想在 apollo-server 上结合 2 个突变调用,首先创建 aa ,Customer
然后Address
为该客户创建一个。Address
突变需要customerID
能够做到这一点,但也需要来自原始整体突变的信息,它需要访问。
这是通用代码:
makeExecutableSchema({
typeDefs: gql`
type Mutation {
createCustomerWithAddress(customer: CustomerRequest!, address: AddressRequest!): Response
}
input CustomerRequest {
name: String!
}
input AddressRequest {
address: String!
city: String!
state: String!
country: String!
}
type Response {
customerID: Int!
addressID: Int!
}
`,
resolvers: {
Mutation: {
createCustomerWithAddress: async (_, {customer}, context, info) => {
return await api.someAsyncCall(customer);
}
},
Response: {
addressID: async(customerID) => {
// how do we get AddressRequest here?
return await api.someAsyncCall(customerID, address);
}
}
}
})
我没有从原始代码中展示很多复杂性,但我想要了解的只是如何通过子突变访问请求参数的根源,如果可能的话。我真的不想address
从顶级突变传递到子突变。
解决方案
您不需要Response
解析器中的字段。createCustomerWithAddress
应该返回一个形状像Response
.
resolvers: {
Mutation: {
createCustomerWithAddress: async (_, {customer, address}, context, info) => {
// create customer
const customerId = await api.CreateCustomer(customer);
// create address and assign customerId
const addressId = await api.CreateAddress({ ...address, customerId });
// return response
return { customerId, addressId };
}
},
}