[mod_python] simpleTAL - 500 Internal Server Error

If sys.stdout is where TAL is writing the output to, try instead:

  req.content_type = 'text/html'
  req.send_http_header()
  template.expand (context, req)
  return " "

This will only work though if TAL only uses write() on sys.stdout.

It would be better if you could get a string out of expand()
and write it to req explicitly or return it from handler.

Maybe try:

  output = StringIO.StringIO()
  template.expand(context,output)
  return output.getvalue()

or:

  output = StringIO.StringIO()
  template.expand(context,output)
  req.content_type = 'text/html'
  req.send_http_header()
  req.write(output.getvalue()
  return " "

Does expand() return a string if you don't supply sys.stdout as an
argument?

Sorry if this isn't helpful, in a bit of rush to get somewhere at the
moment.

Graham

Julien Cigar wrote ..
> Hello,
> 
> I suggest that you first try with multiple interpreters (with the 
> PythonInterpPerDirectory On for example). I had a lot of "Internal 
> Server Error" before, and the problem comes from that.
> I don't know TAL but I had a similar problem with the Clearsilver 
> template engine (and multiple interpreters).
> With clearsilver I had to run the neo_cgi.update() after importing 
> neo_cgi, from the documentation :
> 
> *update*()
>     This is only necessary in PyApache in non-single Python interpreter
>     mode. If you are using an embedded Python interpreter which
>     continues to be reloaded every page, then update reinstalls the
>     "fake" modules neo_util, and neo_cs. This is necessary because on
>     interpreter restart the modules are kept loaded, but their init
>     functions are not re-run.
> 
> maybe you have to do something like that with TAL too ...
> 
> Regards,
> Julien
> 
> Erdi Balint wrote:
> 
> > Hi all,
> >
> > I'm trying to use simpleTAL templates with no success. When querying
> > the python script that expands the template I get the following:
> >
> > "Internal Server Error
> > The server encountered an internal error or misconfiguration and was
> > unable to complete your request.
> >
> > Please contact the server administrator, webmaster at localhost and 
> > inform them of the time the error occurred, and anything you might 
> > have done that may have caused the error.
> >
> > More information about this error may be available in the server error
> > log."
> >
> > Apache/1.3.33 Server at localhost Port 80
> >
> > The apache error log is not verbose and does not contain a stack 
> > trace, only this:
> >
> > [Wed Oct 12 08:42:37 2005] [notice] mod_python: (Re)importing 
> > mod_python.publisher from None
> > [Wed Oct 12 08:42:37 2005] [notice] mod_python: (Re)importing simple
> > from ['/var/www/helloSimpleTAL/control']
> >
> > My code:
> >
> > import sys
> > from simpletal import simpleTAL, simpleTALES
> > ------
> > def hello(req):
> >
> >     # Create the context that is used by the template
> >     context = simpleTALES.Context()
> >     context.addGlobal ("title", "Hello World")
> >
> >     templateFile = open ("/var/www/helloSimpleTAL/simple.html", 'r')
> >     template = simpleTAL.compileHTMLTemplate (templateFile)
> >     templateFile.close()
> >     template.expand (context, sys.stdout)
> >     # (1)
> > -----
> > My Directory directive in apache:
> >
> > <Directory /var/www/helloSimpleTAL/control>
> >         SetHandler python-program
> >         PythonHandler mod_python.publisher
> >         PythonDebug on
> > </Directory>
> >
> >
> > I've found someone had the same problem before on this mailing list 
> > and got answered that this is a bug in mod_python 2.7.10, so I added
> a
> >
> > return " " to (1) above, but that only returned an empty page (and if
> > I do return "x", a page with an 'x' will be rendered)
> >
> > I'm using Python 2.3.4, Apache 1.3.33, mod_python 2.7.11 and I've got
> > the publisher handler to work beforehand, just not with simpleTAL :(
> >
> > Can anyone help me with this?
> >
> > Thanks a lot in advance,
> > Balint
> > _______________________________________________
> > Mod_python mailing list
> > Mod_python at modpython.org
> > http://mailman.modpython.org/mailman/listinfo/mod_python
> >
> 
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