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David Fraser
davidf at sjsoft.com
Mon Oct 10 23:51:27 EDT 2005
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 > > > > > > > >------------------------------------------------------------------------ > >_______________________________________________ >Mod_python mailing list >Mod_python at modpython.org >http://mailman.modpython.org/mailman/listinfo/mod_python > >
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