阿波罗图QL嵌套突变

Question

需要一些关于嵌套突变的帮助。

抽象的场景是这样的：

我想在 apollo-server 上组合 2 个突变调用，首先创建一个Customer然后为该客户创建一个Address。Address突变需要一个customerID才能做到这一点，但也具有它需要访问的原始整体突变的信息。

下面是通用代码：

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);
}
}
}
})

我从原始代码中没有显示很多复杂性，但我想得到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。我真的不想把address从顶级突变传到亚突变。

Answer 1

解析器中不需要Response字段。createCustomerWithAddress应该返回一个形状像Response的对象。

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 };
}
},
}