# How do I find which fields need to be resolved from \`info: GraphQLResolveInfo\`?
**URL:** https://community.apollographql.com/t/how-do-i-find-which-fields-need-to-be-resolved-from-info-graphqlresolveinfo/5703
**Category:** Server
**Tags:** server
**Created:** [February 13, 2023, 9:10am UTC](https://community.apollographql.com/t/how-do-i-find-which-fields-need-to-be-resolved-from-info-graphqlresolveinfo/5703 "2023-02-13T09:10:41Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Dulguun\_Otgon](https://community.apollographql.com/u/Dulguun_Otgon)
#### Post date: [February 13, 2023, 9:10am UTC](https://community.apollographql.com/t/how-do-i-find-which-fields-need-to-be-resolved-from-info-graphqlresolveinfo/5703/1 "2023-02-13T09:10:41Z")
Let’s say graphql type definitions is
```graphql
type Post {
id: ID!
tags: Tag
}
type Tag {
id: ID!
name
parentTag: Tag
}
type Query {
lastPost: Post
}
```
and the user query is
```graphql
{
query {
lastPost {
tags {
name
parentTag {
name
}
}
}
}
}
```
and the `Query.lastPost` resolver will return
```json
{
"id": 1,
"tagIds": [5,6,7]
}
```
How do I extract what’s missing from inside the `Query.lastPost` and get the result below?
```javascript
const missingFields = `
tags {
name
parentTag {
name
}
}
`;
```
---
### Author:  [@trevor.scheer](https://community.apollographql.com/u/trevor.scheer)
#### Post date: [February 13, 2023, 7:32pm UTC](https://community.apollographql.com/t/how-do-i-find-which-fields-need-to-be-resolved-from-info-graphqlresolveinfo/5703/2 "2023-02-13T19:32:38Z")
Do you mind sharing why you’re trying to gather that information? My instinct is to steer you away from that question unless you have a very specific reason to do that.
A more conventional approach for your resolvers might look something like this. Note that `lastPost` doesn’t return tag IDs since it really shouldn’t be concerned with whether or not `tags` was requested or not. Now `tags` is responsible for loading all the tags that belong to a post.
Does this make sense? Is this what you’re looking to accomplish?
```plaintext
resolvers: {
Query: {
lastPost() {
return { id: 1 };
},
},
Post: {
tags(parentValue) {
// const tagsForPost = lookup tags by parentValue.id (post ID)
return [{id: 1, name: "tag1"}]
}
}
},
```
Also there’s an error in your SDL, I assume you meant `tags: [Tag!]` (it’s currently not a list type in your snippet)
---
### Author:  [@Dulguun\_Otgon](https://community.apollographql.com/u/Dulguun_Otgon)
#### Post date: [March 20, 2023, 2:43pm UTC](https://community.apollographql.com/t/how-do-i-find-which-fields-need-to-be-resolved-from-info-graphqlresolveinfo/5703/3 "2023-03-20T14:43:36Z")
[GitHub - apollosolutions/federation-subscription-tools: A set of demonstration utilities to facilitate GraphQL subscription usage alongside a federated data graph](https://github.com/apollosolutions/federation-subscription-tools) already does that. I’m trying to what it does, without this library.
---
### Author:  [@Justin\_Gonzalez](https://community.apollographql.com/u/Justin_Gonzalez)
#### Post date: [February 6, 2025, 8:49pm UTC](https://community.apollographql.com/t/how-do-i-find-which-fields-need-to-be-resolved-from-info-graphqlresolveinfo/5703/4 "2025-02-06T20:49:11Z")