I'm getting an error like this:
Traceback (most recent call last):
File
"/usr/local/lib/python3.6/site-packages/pyramid_debugtoolbar/panels/performance.py",
line 57, in resource_timer_handler
result = handler(request)
File "/app/warehouse/raven.py", line 41, in raven_tween
return handler(request)
File "/usr/local/lib/python3.6/site-packages/pyramid_tm/__init__.py",
line 171, in tm_tween
reraise(*exc_info)
File "/usr/local/lib/python3.6/site-packages/pyramid_tm/compat.py", line
36, in reraise
raise value
File "/usr/local/lib/python3.6/site-packages/pyramid_tm/__init__.py",
line 136, in tm_tween
response = handler(request)
File "/usr/local/lib/python3.6/site-packages/pyramid/tweens.py", line 41,
in excview_tween
response = _error_handler(request, exc)
File "/usr/local/lib/python3.6/site-packages/pyramid/tweens.py", line 16,
in _error_handler
reraise(*exc_info)
File "/usr/local/lib/python3.6/site-packages/pyramid/compat.py", line
148, in reraise
raise value
File "/usr/local/lib/python3.6/site-packages/pyramid/tweens.py", line 39,
in excview_tween
response = handler(request)
File "/app/warehouse/cache/http.py", line 69, in conditional_http_tween
response = handler(request)
File "/usr/local/lib/python3.6/site-packages/pyramid/router.py", line
156, in handle_request
view_name
File "/usr/local/lib/python3.6/site-packages/pyramid/view.py", line 617,
in _call_view
response = view_callable(context, request)
File "/app/warehouse/sessions.py", line 293, in wrapped
return view(context, request)
File "/app/warehouse/csrf.py", line 38, in wrapped
return view(context, request)
File "/usr/local/lib/python3.6/site-packages/pyramid/viewderivers.py",
line 512, in csrf_view
return view(context, request)
File "/app/warehouse/cache/http.py", line 43, in wrapped
response = view(context, request)
File "/app/warehouse/cache/origin/__init__.py", line 81, in wrapped
return view(context, request)
File "/usr/local/lib/python3.6/site-packages/pyramid/viewderivers.py",
line 461, in rendered_view
request, result, view_inst, context)
File "/usr/local/lib/python3.6/site-packages/pyramid/renderers.py", line
435, in render_view
return self.render_to_response(response, system, request=request)
File "/usr/local/lib/python3.6/site-packages/pyramid/renderers.py", line
458, in render_to_response
result = self.render(value, system_values, request=request)
File "/usr/local/lib/python3.6/site-packages/pyramid/renderers.py", line
454, in render
result = renderer(value, system_values)
File "/usr/local/lib/python3.6/site-packages/pyramid/renderers.py", line
277, in _render
return self.serializer(value, default=default, **self.kw)
File "/usr/local/lib/python3.6/json/__init__.py", line 238, in dumps
**kw).encode(obj)
File "/usr/local/lib/python3.6/json/encoder.py", line 199, in encode
chunks = self.iterencode(o, _one_shot=True)
File "/usr/local/lib/python3.6/json/encoder.py", line 257, in iterencode
return _iterencode(o, 0)
File "/usr/local/lib/python3.6/site-packages/pyramid/renderers.py", line
290, in default
raise TypeError('%r is not JSON serializable' % (obj,))
File
"/usr/local/lib/python3.6/site-packages/sqlalchemy/ext/associationproxy.py",
line 708, in __repr__
return repr(list(self))
File
"/usr/local/lib/python3.6/site-packages/sqlalchemy/ext/associationproxy.py",
line 512, in __len__
return len(self.col)
File
"/usr/local/lib/python3.6/site-packages/sqlalchemy/ext/associationproxy.py",
line 509, in <lambda>
col = property(lambda self: self.lazy_collection())
File
"/usr/local/lib/python3.6/site-packages/sqlalchemy/ext/associationproxy.py",
line 465, in __call__
"stale association proxy, parent object has gone out of "
sqlalchemy.exc.InvalidRequestError: stale association proxy, parent object
has gone out of scope
However, for the life of me I can't seem to figure out *why*. It's hard to
find much information about this error online, but what I can find suggests
something is going out of scope and getting garbage collected. I can't
figure out what that thing would be though.
For reference, the model I'm using
is
https://github.com/pypa/warehouse/blob/dbb965a354835b383a30a94177ef8231e9d3532b/warehouse/packaging/models.py#L212-L353
and I'm using it in this
view
https://github.com/pypa/warehouse/blob/dbb965a354835b383a30a94177ef8231e9d3532b/warehouse/legacy/api/json.py#L57-L176.
As it is that view works, but if I attempt to access Release.requires_dist,
then it blows up with the above error, with a diff like:
diff --git a/warehouse/legacy/api/json.py b/warehouse/legacy/api/json.py
index edf0283..da03d86 100644
--- a/warehouse/legacy/api/json.py
+++ b/warehouse/legacy/api/json.py
@@ -166,6 +166,7 @@ def json_release(release, request):
name=project.name,
version=release.version,
),
+ "requires_dist": release.requires_dist,
"docs_url": project.documentation_url,
"bugtrack_url": project.bugtrack_url,
"home_page": release.home_page,
If I instead use release._requires_dist, then it works fine (other than the
JSON seriaization fails, because it's a ORM object that can't be
serialized). What am I doing wrong here?
--
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http://www.sqlalchemy.org/
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