问题描述
如何使用 sequelize-typescript 通过自定义 Apollo GraphQL 类型查询相关对象?我有以下没有打字稿的查询:
用户和事件 GraphQL 类型:
type User {
id: Int
login: String
email: String
role: Roles
url_identity: String
}
type Event {
id: Int
event_name: String
user: User
}
用户模型
import {HasOne,Model,Table} from "sequelize-typescript";
import Event from "./event.model";
@Table({
timestamps: false,modelName: 'User',})
export default class User extends Model {
@HasOne(() => Event)
event: Event
}
解析器:
static resolver() {
return {
Event: {
user: event => event.$get('user')
}
}
打字稿看不到 event.$get('user')
解决方法
答案是将 mappers 添加到您的 graphql-codegen 配置中。 您还可以为上下文传递接口(第三个参数):
schema: ./src/graphql/types/**/*.graphql
generates:
./src/graphql/resolvers-types.ts:
config:
useIndexSignature: true
contextType: ./schema#IApolloServerContext
mappers:
Event: ../database/models/event.model#EventModel
User: ../database/models/user.model#UserModel
plugins:
- typescript
- typescript-resolvers
更多信息在这里:https://graphql-code-generator.com/docs/plugins/typescript-resolvers#use-your-model-types-mappers