Type-graphql typegoose Cannot return null for non-nullable field UserEntity.id

Question

Hi everyone!

import { modelOptions, prop } from '@typegoose/typegoose';
import mongoose from 'mongoose';
import { Field, ID, ObjectType } from 'type-graphql';

@ObjectType()
@modelOptions({ schemaOptions: { versionKey: false } })
export class UserEntity {
  @Field()
  @prop()
  public email?: string;
  @Field()
  @prop()
  public firstName?: string;
  @Field(() => ID)
  @prop()
  public id: mongoose.Types.ObjectId;
  @Field()
  @prop()
  public lastName?: string;
}

mutation Register {
  register(password: "password1234", email: "mail", lastName: "lasr", firstName: "first") {
    id
  }
}

I'm using type-graphl and typegoose to provide an UserEntity as a result of a mutation. After creating a user in the database there is an autogenerated _id in the document as expected. The result of the create function has a id property having a string representation of id. The mutation works as expected, but if I query for id I get this exception:

Cannot return null for non-nullable field UserEntity.id.

How do I solve this? What decorators do I have to use to see the proper id?

Answer 1

I renamed id to _id and removed @prop() from the property. This way one can access the generated _id from the database.

import { modelOptions, prop } from '@typegoose/typegoose';
import mongoose from 'mongoose';
import { Field, ID, ObjectType } from 'type-graphql';

@ObjectType()
@modelOptions({
  schemaOptions: {
    versionKey: false,
  },
})
export class UserEntity {
  @Field(() => ID)
  public _id: mongoose.Types.ObjectId;
  @Field()
  @prop()
  public email: string;
  @Field()
  @prop()
  public firstName: string;
  @Field()
  @prop()
  public lastName: string;
}