How to pass parameters to child in nested query?

[CuBeof]

[pylipp]

I assume you have a scenario like

type Book {
  id: ID!
  title: String
}
type Author {
  id: ID!
  name: String
  books: [Book!]!
}
type Query {
  author(id: ID!): Author
}

In order to make queries like

query { author(id: 42) { books(nr: 10) { title } } }

to return the first 10 book titles of author identified by ID 42, update the schema for the author type: books(nr: Int): [Book!]!

The corresponding resolver then is along the lines of

@author.field("books")
def resolve_author_books(author_obj, info, nr):
    # call to retrieve nr rows of data

This is mentioned in the GraphQL base documentation. I also found this answer helpful.

Hope that helps =)