well, not sure yet how a None is coming in there that is sporadic, or even at
all, but if that's what's happening then we would think this patch would fix
the problem, the Q is does the query still produce the correct results:
diff --git a/lib/sqlalchemy/orm/strategies.py b/lib/sqlalchemy/orm/strategies.py
index 8e06c4f598..2bac1aad48 100644
--- a/lib/sqlalchemy/orm/strategies.py
+++ b/lib/sqlalchemy/orm/strategies.py
@@ -218,10 +218,10 @@ class ColumnLoader(LoaderStrategy):
if adapter:
if check_for_adapt:
c = adapter.adapt_check_present(c)
- if c is None:
- return
else:
c = adapter.columns[c]
+ if c is None:
+ return
compile_state._append_dedupe_col_collection(c, column_collection)
can you try that patch ?
On Fri, May 12, 2023, at 10:47 PM, Mike Bayer wrote:
> 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
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>>>> 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. See http://stackoverflow.com/help/mcve for a full
>> description.
>> ---
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>>
>> <https://groups.google.com/d/msgid/sqlalchemy/36d0bc21-98b3-46ef-9085-c786f98234fen%40googlegroups.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. See http://stackoverflow.com/help/mcve for a full
> description.
> ---
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> email to sqlalchemy+unsubscr...@googlegroups.com.
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>
> <https://groups.google.com/d/msgid/sqlalchemy/b84e367a-788e-4034-952d-3bc76c67d71c%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. See http://stackoverflow.com/help/mcve for a full description.
---
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