[mod_python] testhandler issue

Nicolas Lehuen nicolas.lehuen at gmail.com
Tue Oct 11 01:55:31 EDT 2005


Hi,

That's a good idea, we could just add an index() method to the mptest
module. There is no real mptest module, though. It's just some text in a
tutorial.

Regards,
Nicolas

2005/10/11, David Fraser <davidf at sjsoft.com>:
>
> Hi Nicolas
>
> I wonder if it wouldb e helpful to add a publisher-style handler to the
> mptest module. This could return a page that says "this is being served
> by the publisher" with some explanation - that way people will at least
> be told what is happening...
>
> David
>
> Nicolas Lehuen wrote:
>
> > Hi Ken,
> >
> > Unfortunately for a lot of mod_python beginners, it is not clear why
> > the mptest handler CANNOT be used directly by the publisher handler.
> >
> > First of all, try to have the publisher running as described here :
> > http://www.modpython.org/live/current/doc-html/tut-pub.html
> > <http://www.modpython.org/live/current/doc-html/tut-pub.html>
> >
> > Then, you'll understand that even if the publisher is correctly
> > configured, if you call /mod_python/mptest.py, then the publisher
> > handler will find the mptest module but NOT an index(req) function
> > inside... You'll have to call /mod_python/mptest.py/handler to specify
> > the function to call (or rename handler to index) and begin to solve
> > your 404 problem.
> >
> > Last, but not least, handlers are supposed to write on the request
> > object and return a status value (hence the return apache.OK), whereas
> > the return value of published functions is the data you want to send
> > back to the client (though you can also write on the request object to
> > make things more interesting).
> >
> > To sum up, handlers are the lowest API of mod_python, and the
> > publisher is just a handler which has its own system for publishing,
> > which somewhat resembles the handler system, but with enough
> > differences to prevent the two from being swappable at will... We know
> > it's quite confusing for a newbie, but now that there are users for
> > the two layers, we can't unify them :).
> >
> > Regards,
> > Nicolas
> >
> > 2005/10/6, Ken Bradshaw <bradshak at us.ibm.com
> > <mailto:bradshak at us.ibm.com>>:
> > >
> > >
> > > Hello All,
> > > I've recently taken an interest in python and mod_python in
> > particular. For
> > > the past two years or so I've been developing enterprise web apps in
> > j2ee
> > > with WebSphere Applications Server and Portal Server, so I'm pretty
> > used to
> > > pouring over documentation when configuration issues arise.
> > Unfortunately, I
> > > haven't found a solution to my problem regarding the PythonHandler
> > > mod_python.publisher. Here's a brief synopsis of my environment and
> > problem.
> > >
> > > Environment:
> > >
> > > I just used the standard packages provided by apt-get.
> > >
> > > Debian 3.1 stable
> > > apache 2.0.54
> > > mod_python 3.1.3
> > > Python 2.3.5
> > >
> > > Configuration:
> > >
> > > file: /etc/apache2/sites-available/default
> > >
> > > <Directory /var/www/mod_python>
> > > AllowOverride FileInfo
> > > </Directory>
> > >
> > > --for whatever reason I had to add this to get the .htaccess to work.
> > >
> > > file: /var/www/mod_python/.htaccess
> > >
> > > AddHandler python-program .py .psp
> > > PythonHandler mptest
> > > #PythonHandler mod_python.publisher | .py
> > > PythonHandler mod_python.psp | .psp
> > > PythonDebug On
> > >
> > > file: /var/www/mod_python/mptest.py
> > >
> > > from mod_python import apache
> > >
> > > def handler(req):
> > > req.content_type="text/html"
> > > req.write("<html><body>")
> > > req.write("Hello World!")
> > > req.write("</body></html>")
> > > return apache.OK
> > >
> > > Problem:
> > >
> > > With the .htaccess configured as above, mptest.py works correctly
> > when I
> > > point the browser to http://localhost/mod_python/mptest and
> > > prints the Hello World!
> > >
> > > I comment line 2 of the .htaccess and uncomment line 3, and the
> browser
> > > reports a 404 Error stating that The requested URL
> > /mod_python/mptest.py was
> > > not found on this server(note that the URL remained the same in the
> > > browser). I also find it interesting to note that in either
> > configuration,
> > > the PythonHandler mod_python.psp functions correctly, and the
> > > apache2/access.log and error.log report nothing more than a 404 error.
> > >
> > > Now I thought about just removing the mod_python.publisher
> > altogether and
> > > using multiple Python handlers for the .py files, but the
> > implementation
> > > failed for some reason. My plan was to make an entry for each .py
> > file in
> > > the same way you would make an entry for every servlet in a web.xml
> > file. It
> > > seems as though no matter where or in what order I put the
> > PythonHandler
> > > lines in, if I make a call to one of them, all of them are executed.
> > >
> > > This I assume, means that I really have to have a mod_python.publisher
> > > working. Any help would be greatly appreciate.
> > >
> > > Regards,
> > > Ken Bradshaw
> > > _______________________________________________
> > > Mod_python mailing list
> > > Mod_python at modpython.org <mailto:Mod_python at modpython.org>
> > > http://mailman.modpython.org/mailman/listinfo/mod_python
> > >
> > >
> > >
> >
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> >
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> >
>
>
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