[mod_python] NAV mod_python.publisher errors

Paul J. Pathiakis wrote:
> Hi,
> 
> would someone please respond to this?  I've posted twice to this list and no one responds. 

This is the first time I've seen this question appear on the list. I 
checked the archives and it's not there either.

> I'm sorry if this is such a low level question but I'd really like to get it working.

That's not the problem. We just can't respond to things we don't see. :)

> 
> I have index.py.  It seems to be found by the browser and an attempt is made by python to render it and display it.  However, I get the following:
> 
> Mod_python error: "PythonHandler mod_python.publisher"
> 
> Traceback (most recent call last):
> 
>   File "/usr/local/lib/python2.4/site-packages/mod_python/apache.py", line 299, in HandlerDispatch
>     result = object(req)
> 
>   File "/usr/local/lib/python2.4/site-packages/mod_python/publisher.py", line 213, in handler
>     published = publish_object(req, object)
> 
>   File "/usr/local/lib/python2.4/site-packages/mod_python/publisher.py", line 412, in publish_object
>     return publish_object(req,util.apply_fs_data(object, req.form, req=req))
> 
>   File "/usr/local/lib/python2.4/site-packages/mod_python/util.py", line 439, in apply_fs_data
>     return object(**args)
> 
>   File "/usr/local/www/data/nav/index.py", line 44, in index
>     if req.session.has_key('user'):
> 
> AttributeError: 'mp_request' object has no attribute 'session'
> 
> 
> Now, I can see on line 44 in index.py there is the exact line right under the last part of the error.  Why is the AttributeError being generated?  Why is mp_request (mod_python reqest object) missing the attribute session?  What is missing from httpd.conf file or other files that is not allowing this to continue?


Without seeing nav/index.py I can only guess, but I assume req.session 
is not there for the same reason req.foobar is missing...

Typical session usage looks like this:

from mod_python util import Session

def index(req):
     sess = Session.Session(req)
     if sess.is_new():
         sess['user'] = 'blah'


     # stick the session instance into the request object
     # so it can be referenced in other function calls
     req.session = session

     _do_stuff(req)

     sess.save()

def _do_stuff(req):
     req.write(req.session['user'])


Jim