Nested field resolver

[sinwires]

Hello!
I have a question about resolving in nested field. I don't realize if there is a bug or that functionality is not exist yet.
I have this schema and resolver:

from ariadne import ResolverMap, gql, start_simple_server, snake_case_fallback_resolvers

type_defs = """
schema {
  query: RootQuery
}

type RootQuery {
  public: PublicEntryPoint
}

type PublicEntryPoint {
  users: [UserSchema]
}

type UserSchema {
  userId: Int
}
"""

def resolve_users(obj, info):
    print('RESOLVING USERS!')
    return [{'user_id': 1}, {'user_id': 2}]

users_map = ResolverMap("PublicEntryPoint")
users_map.field("users", resolver=resolve_users)

start_simple_server(type_defs, [users_map, snake_case_fallback_resolvers])

But when I make the query to receive data

query {
  public {
    users {
      userId
    }
  }
}

I get

{
  "data": {
    "public": null
  }
}

And the resolver function is not called! Is this correct?
Thanks

[rafalp]

Hi, you also need to define ResolverMap for RootQuery type. Otherwise public field is resolved to null, breaking the resolution chain.

[sinwires]

Thanks, worked!

[kolypto]

NOTE for those of us coming from Google: ResolverMap has been renamed to ObjectType :)

[kolypto]

A working example for nested queries, where an object works as a sort of a namespace:

from ariadne import ObjectType, QueryType
from ariadne import gql
from ariadne import graphql_sync
from ariadne import make_executable_schema
from graphql import GraphQLResolveInfo

GRAPHQL_SCHEMA = gql('''
type Query {
    sub: SubQuery!
}

type SubQuery {
    hello: String!
}
''')


Query = QueryType()


@Query.field('sub')
def resolve_sub(*_):
    return SubQuery


SubQuery = ObjectType('SubQuery')

@SubQuery.field('hello')
def resolve_hello(_, info: GraphQLResolveInfo):
    return 'hi'