OK, maybe you are onto something with the theory re: JoinedLoader._generate_row_adapter(). will look at that
On Fri, May 12, 2023, at 6:16 PM, Shane Holcombe wrote: > Thanks for linking that github issue, completely missed that one. > > Here's the complete stack trace, sorry for not including that at the start > > Traceback (most recent call last): > File "/Users/sfh/env/vita/lib/python3.9/site-packages/werkzeug/serving.py", > line 333, in run_wsgi > execute(self.server.app) > File "/Users/sfh/env/vita/lib/python3.9/site-packages/werkzeug/serving.py", > line 320, in execute > application_iter = app(environ, start_response) > File "/Users/sfh/env/vita/lib/python3.9/site-packages/flask/app.py", line > 2551, in __call__ > return self.wsgi_app(environ, start_response) > File "/Users/sfh/env/vita/lib/python3.9/site-packages/flask/app.py", line > 2531, in wsgi_app > response = self.handle_exception(e) > File > "/Users/sfh/env/vita/lib/python3.9/site-packages/flask_cors/extension.py", > line 165, in wrapped_function > return cors_after_request(app.make_response(f(*args, **kwargs))) > File "/Users/sfh/env/vita/lib/python3.9/site-packages/flask_restx/api.py", > line 673, in error_router > return original_handler(f) > File "/Users/sfh/env/vita/lib/python3.9/site-packages/flask_restx/api.py", > line 671, in error_router > return self.handle_error(e) > File "/Users/sfh/env/vita/lib/python3.9/site-packages/flask/app.py", line > 2528, in wsgi_app > response = self.full_dispatch_request() > File "/Users/sfh/env/vita/lib/python3.9/site-packages/flask/app.py", line > 1825, in full_dispatch_request > rv = self.handle_user_exception(e) > File > "/Users/sfh/env/vita/lib/python3.9/site-packages/flask_cors/extension.py", > line 165, in wrapped_function > return cors_after_request(app.make_response(f(*args, **kwargs))) > File "/Users/sfh/env/vita/lib/python3.9/site-packages/flask_restx/api.py", > line 673, in error_router > return original_handler(f) > File "/Users/sfh/env/vita/lib/python3.9/site-packages/flask_restx/api.py", > line 671, in error_router > return self.handle_error(e) > File "/Users/sfh/env/vita/lib/python3.9/site-packages/flask/app.py", line > 1823, in full_dispatch_request > rv = self.dispatch_request() > File "/Users/sfh/env/vita/lib/python3.9/site-packages/flask/app.py", line > 1799, in dispatch_request > return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args) > File "/Users/sfh/env/vita/lib/python3.9/site-packages/flask_restx/api.py", > line 404, in wrapper > resp = resource(*args, **kwargs) > File "/Users/sfh/env/vita/lib/python3.9/site-packages/flask/views.py", line > 107, in view > return current_app.ensure_sync(self.dispatch_request)(**kwargs) > File > "/Users/sfh/env/vita/lib/python3.9/site-packages/flask_restx/resource.py", > line 46, in dispatch_request > resp = meth(*args, **kwargs) > File > "/Users/sfh/env/vita/lib/python3.9/site-packages/flask_cors/decorator.py", > line 128, in wrapped_function > resp = make_response(f(*args, **kwargs)) > File "/Users/sfh/PycharmProjects/vita/stockholm/geneva/api/auth.py", line > 151, in decorated > return f(*args, **kwargs) > File > "/Users/sfh/PycharmProjects/vita/stockholm/geneva/api/sales/lead_api.py", > line 116, in get > lead = lead_factory.extended_lead_for_id(lead_id) > File > "/Users/sfh/PycharmProjects/vita/stockholm/geneva/sales/lead_factory.py", > line 59, in extended_lead_for_id > return db.session.execute(stmt).scalar_one_or_none() > File > "/Users/sfh/env/vita/lib/python3.9/site-packages/sqlalchemy/orm/scoping.py", > line 724, in execute > return self._proxied.execute( > File > "/Users/sfh/env/vita/lib/python3.9/site-packages/sqlalchemy/orm/session.py", > line 2232, in execute > return self._execute_internal( > File > "/Users/sfh/env/vita/lib/python3.9/site-packages/sqlalchemy/orm/session.py", > line 2127, in _execute_internal > result: Result[Any] = compile_state_cls.orm_execute_statement( > File > "/Users/sfh/env/vita/lib/python3.9/site-packages/sqlalchemy/orm/context.py", > line 292, in orm_execute_statement > result = conn.execute( > File > "/Users/sfh/env/vita/lib/python3.9/site-packages/sqlalchemy/engine/base.py", > line 1413, in execute > return meth( > File > "/Users/sfh/env/vita/lib/python3.9/site-packages/sqlalchemy/sql/elements.py", > line 483, in _execute_on_connection > return connection._execute_clauseelement( > File > "/Users/sfh/env/vita/lib/python3.9/site-packages/sqlalchemy/engine/base.py", > line 1629, in _execute_clauseelement > compiled_sql, extracted_params, cache_hit = elem._compile_w_cache( > File > "/Users/sfh/env/vita/lib/python3.9/site-packages/sqlalchemy/sql/elements.py", > line 671, in _compile_w_cache > compiled_sql = self._compiler( > File > "/Users/sfh/env/vita/lib/python3.9/site-packages/sqlalchemy/sql/elements.py", > line 288, in _compiler > return dialect.statement_compiler(dialect, self, **kw) > File > "/Users/sfh/env/vita/lib/python3.9/site-packages/sqlalchemy/sql/compiler.py", > line 1426, in __init__ > Compiled.__init__(self, dialect, statement, **kwargs) > File > "/Users/sfh/env/vita/lib/python3.9/site-packages/sqlalchemy/sql/compiler.py", > line 867, in __init__ > self.string = self.process(self.statement, **compile_kwargs) > File > "/Users/sfh/env/vita/lib/python3.9/site-packages/sqlalchemy/sql/compiler.py", > line 912, in process > return obj._compiler_dispatch(self, **kwargs) > File > "/Users/sfh/env/vita/lib/python3.9/site-packages/sqlalchemy/sql/visitors.py", > line 143, in _compiler_dispatch > return meth(self, **kw) # type: ignore # noqa: E501 > File > "/Users/sfh/env/vita/lib/python3.9/site-packages/sqlalchemy/sql/compiler.py", > line 4593, in visit_select > compile_state = select_stmt._compile_state_factory( > File > "/Users/sfh/env/vita/lib/python3.9/site-packages/sqlalchemy/sql/base.py", > line 678, in create_for_statement > return klass.create_for_statement(statement, compiler, **kw) > File > "/Users/sfh/env/vita/lib/python3.9/site-packages/sqlalchemy/orm/context.py", > line 1101, in create_for_statement > SelectState.__init__(self, self.statement, compiler, **kw) > File > "/Users/sfh/env/vita/lib/python3.9/site-packages/sqlalchemy/sql/selectable.py", > line 4501, in __init__ > self.froms = self._get_froms(statement) > File > "/Users/sfh/env/vita/lib/python3.9/site-packages/sqlalchemy/sql/selectable.py", > line 4599, in _get_froms > [ > File > "/Users/sfh/env/vita/lib/python3.9/site-packages/sqlalchemy/sql/selectable.py", > line 4600, in <listcomp> > element._from_objects > AttributeError: 'NoneType' object has no attribute '_from_objects' > In this case the statement we use, extended_lead_for_id, is > > from geneva.models import person_factory > stmt = select(Lead).where(Lead.id == lead_id).options( > joinedload(Lead.lead_person_client), > joinedload(Lead.lead_person_primary_contact), > joinedload(Lead.person), > joinedload(Lead.person).joinedload(person_factory.Person.contract), > joinedload(Lead.assigned_to_application_user), > joinedload(Lead.in_progress_by_application_user), > joinedload(Lead.closed_by_application_user), > joinedload(Lead.lu_client_type), > joinedload(Lead.lu_lead_origin_type), > joinedload(Lead.lu_lead_status), > joinedload(Lead.lu_lead_closed_state), > joinedload(Lead.lu_lead_lost_reason), > joinedload(Lead.lu_marketing_channel), > joinedload(Lead.lu_marketing_channel_digital), > joinedload(Lead.lu_marketing_channel_on_site), > joinedload(Lead.lu_marketing_channel_out_of_home), > joinedload(Lead.lu_marketing_channel_print), > joinedload(Lead.lu_marketing_channel_radio), > joinedload(Lead.lu_marketing_channel_referral), > joinedload(Lead.lu_marketing_channel_tv), > joinedload(Lead.lu_marketing_channel_paid_directory), > joinedload(Lead.lu_marketing_channel_direct_mail), > joinedload(Lead.referral_supplier), > joinedload(Lead.council), > joinedload(Lead.hospital), > ) > return db.session.execute(stmt).scalar_one_or_none() > > As for the models, we don't really use any default loaders on relationship > creation, we've tended to avoid that and put the joins in the select > statements we create > If you really need to see a particular model from this let me know. > > Thanks again for the help > On Saturday, May 13, 2023 at 1:28:27 AM UTC+10 Mike Bayer wrote: >> __ >> I really need to see: >> >> 1. actual models to the degree they illustrate the default loaders set up on >> relationships >> 2. query in use >> 3. **complete** stack trace, put it on a github gist if it's too long. >> every line, the error, top to bottom. thanks >> >> On Fri, May 12, 2023, at 11:25 AM, Mike Bayer wrote: >>> >>> >>> On Fri, May 12, 2023, at 1:25 AM, Shane Holcombe wrote: >>>> AttributeError: 'NoneType' object has no attribute '_from_objects' >>>> (I've shortened this from the entire traceback) >>> >>> OK what kind of traceback, is it a recursion overflow kind of traceback ? >>> (e.g. many hundreds of repeated series of lines)? that would explain >>> the nonsensical error at least (there's no way for None to be in the place >>> that this error reports it) >>> >>> >>> >>> -- >>> SQLAlchemy - >>> The Python SQL Toolkit and Object Relational Mapper >>> >>> http://www.sqlalchemy.org/ >>> >>> To post example code, please provide an MCVE: Minimal, Complete, and >>> Verifiable Example. See http://stackoverflow.com/help/mcve for a full >>> description. >>> --- >>> You received this message because you are subscribed to the Google Groups >>> "sqlalchemy" group. >>> To unsubscribe from this group and stop receiving emails from it, send an >>> email to sqlalchemy+...@googlegroups.com. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/sqlalchemy/9762bf53-8443-4780-9091-136863716290%40app.fastmail.com >>> >>> <https://groups.google.com/d/msgid/sqlalchemy/9762bf53-8443-4780-9091-136863716290%40app.fastmail.com?utm_medium=email&utm_source=footer>. >> > > > -- > SQLAlchemy - > The Python SQL Toolkit and Object Relational Mapper > > http://www.sqlalchemy.org/ > > To post example code, please provide an MCVE: Minimal, Complete, and > Verifiable Example. 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