Could not resolve the type of 'node'. Check that the class is accessible from the global module scope.

[EricChambersPowerDigital]

Could not resolve the type of 'node'. Check that the class is accessible from the global module scope

Description

After adding a relationship to two SQLAlchemy models, the following error from strawberry is produced when the models are being mapped by this package.

Traceback (most recent call last):
  File "/usr/local/lib/python3.11/multiprocessing/process.py", line 314, in _bootstrap
    self.run()
  File "/usr/local/lib/python3.11/multiprocessing/process.py", line 108, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/local/lib/python3.11/site-packages/uvicorn/_subprocess.py", line 76, in subprocess_started
    target(sockets=sockets)
  File "/usr/local/lib/python3.11/site-packages/uvicorn/server.py", line 59, in run
    return asyncio.run(self.serve(sockets=sockets))
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/asyncio/runners.py", line 190, in run
    return runner.run(main)
           ^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/asyncio/runners.py", line 118, in run
    return self._loop.run_until_complete(task)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "uvloop/loop.pyx", line 1517, in uvloop.loop.Loop.run_until_complete
  File "/usr/local/lib/python3.11/site-packages/uvicorn/server.py", line 66, in serve
    config.load()
  File "/usr/local/lib/python3.11/site-packages/uvicorn/config.py", line 471, in load
    self.loaded_app = import_from_string(self.app)
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/uvicorn/importer.py", line 21, in import_from_string
    module = importlib.import_module(module_str)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen importlib._bootstrap>", line 1206, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1178, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1149, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 690, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 940, in exec_module
  File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
  File "/usr/app/run_server.py", line 8, in <module>
    from src.graphql.schema import schema
  File "/usr/app/src/graphql/schema.py", line 44, in <module>
    schema = strawberry.federation.Schema(
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/strawberry/federation/schema.py", line 73, in __init__
    super().__init__(
  File "/usr/local/lib/python3.11/site-packages/strawberry/schema/schema.py", line 158, in __init__
    raise error.__cause__ from None
  File "/usr/local/lib/python3.11/site-packages/graphql/type/definition.py", line 808, in fields
    fields = resolve_thunk(self._fields)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/graphql/type/definition.py", line 300, in resolve_thunk
    return thunk() if callable(thunk) else thunk
           ^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/strawberry/schema/schema_converter.py", line 437, in <lambda>
    fields=lambda: self.get_graphql_fields(object_type),
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/strawberry/schema/schema_converter.py", line 326, in get_graphql_fields
    return self._get_thunk_mapping(
           ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/strawberry/schema/schema_converter.py", line 316, in _get_thunk_mapping
    raise UnresolvedFieldTypeError(type_definition, field)
strawberry.exceptions.unresolved_field_type.UnresolvedFieldTypeError: Could not resolve the type of 'node'. Check that the class is accessible from the global module scope.

Steps to Reproduce

1. Add relationships to SQLAlchemy models.

class Books(Base):
    '''Book model.
    '''
    __tablename__ = 'books'

    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    title = Column(String(256), nullable=False)

    reviews = relationship('Reviews', back_populates='book')

class Reviews(Base):
    '''Review model.
    '''
    __tablename__ = 'reviews'

    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    body = Column(String(256), nullable=False)
    book_id = Column(UUID(as_uuid=True), ForeignKey('books.id'), nullable=False)

    book = relationship('Books', back_populates='reviews')

2. Create GraphQL type for Book.

strawberry_model = StrawberrySQLAlchemyMapper()

@strawberry_model.type(model=Books)
class Book:
    '''Book type.
    '''
    __exclude__ = ['deleted_at']

3. Finalize the mapper class

strawberry_model.finalize()

Environment

• Python: 3.11.3
• sqlalchemy: 2.0.15
• strawberry-sqlalchemy-mapper: 0.1.1

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