I also wrote middleware for SQLAlchemy--I'd post it, but it depends on
other libraries that I wrote that I can't really share. What I found
is that, at least while using the dev server, the process_response
method would get called when serving media files, even if the
process_request hadn't. So, simple solution: wrap the session_destroy
call in a try/except block. Here's mine:
def process_response(self, request, response):
try:
request.db_session.commit()
request.db_session.close()
except AttributeError:
pass
return response
Also, may I suggest adding a process_exception method? Here's mine:
def process_exception(self, request, exception):
request.db_session.rollback()
request.db_session.close()
-Jeff
On Nov 12, 7:18 am, ershadul <[EMAIL PROTECTED]> wrote:
> Dear all,
> please consider the following code-block:
>
> class SQLAlchemySessionMiddleware(object):
> """
> This class instantiates a sqlalchemy session and destroys
> """
> def process_request(self, request):
> request.db_session = session()
> return None
>
> def process_response(self, request, response):
> session_destroy(request.db_session)
> return response
>
> Consider that session() is method that returns a new object sqlalchemy
> session.
> I want to inject it before view is processed and destroy it upon
> exiting the view.
>
> I have added the path of this middleware class before XView
> middleware in settings.py.
> But i got a error that
> request has not attribute 'db_session' ( process_response function)
> How can i do it?
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Django users" group.
To post to this group, send email to django-users@googlegroups.com
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at
http://groups.google.com/group/django-users?hl=en
-~----------~----~----~----~------~----~------~--~---
