How do I retain actual object that is passed from a resolver to a type?

[djpate]

Assume I have the following resolver

@Resolver(Post)
export class PostResolver {

  @Query(returns => [Post])
  async posts(@Ctx() context: KaidaRequestContext) {
    const models = await Post.where({where: {userId: context.user.member_id}})
    console.log(models[0].id) #=> return correctly
    return models
  }
}

and I have a post type as such

@ObjectType()
export class Post {
  @Field(type => ID)
  id: string;
}

This works perfectly fine.

Now what if I try to create a custom method for my id field such as

@ObjectType()
export class PhishingTest {
  @Field(type => ID)
  id(): sting => {
    return `${this.id}-foobar`
  }

now this.id is undefined.

The reason is that my Post model where I do my data fetching is a class that looks like this

Class Post
   get id() {
     return this.id
   }

  constructor(protected data) {
  }
}

So I'm assuming somewhere in the context setting of the type the this gets mumbled up? Not sure what do to about that.

[carlocorradini]

@djpate I don't understand what you want to achieve.
Can you add more information because there is only the id field/property and the example is not clear.
Do you want to add a field to an ObjectType from another resolve?

[djpate]

I'm trying to implement something similar to the averageRating method in the examples.

@Field(type => Float, { nullable: true })
  averageRating(@Arg("since") sinceDate: Date): number | null {
    const ratings = this.ratings.filter(rate => rate.date > sinceDate);
    if (!ratings.length) return null;

    const ratingsSum = ratings.reduce((a, b) => a + b, 0);
    return ratingsSum / ratings.length;
  }

in the method above, this.ratings is availble. but for my code, this is not the instance of the actual object that is being resolved.

so

@ObjectType()
export class PhishingTest {
  @Field(type => ID)
  id(): sting => {
    return `${this.id}-foobar` <---- this.id here is undefined 
  }

[carlocorradini]

In the ObjectType, where is defined the id property? I don't see any
For example, if ObjectType has a property called _id: number (private and not Field) and a method (public and Field) it should work fine if _id is always present

[djpate]

It's defined on my Post Class.

Class Post
   get id() {
     return this.id
   }

  constructor(protected data) {
  }
}```

my resolver returns an array of Post so I'm expecting that in my object type, I can accept the actual object that's passed in

[djpate]

To be clear, this works fine If I use a FieldResolver() on the resolver itself. I'd much rather use it on the type thought

[djpate]

OK i've figured it out. I need to use @root() as an argument to my field method in the ObectType and that gives me access to the actual object.