I'm having quasi-random re-occurrences of this problem again even after
SVN upping last night.
- jmj
Jeremy Jones wrote:
I'm working on the shopping cart for my wife's website (which I'll soon
extract for the community) and keep running into something. When I
modify a piece of session data then hit a specific page again, I get
this error in the browser:
500 Internal error
Server got itself in trouble
Traceback (most recent call last):
File
"/usr/local/apps/python2.4/lib/python2.4/site-packages/CherryPy-2.1.0-py2.4.egg/cherrypy/_cphttptools.py",
line 271, in run
main()
File
"/usr/local/apps/python2.4/lib/python2.4/site-packages/CherryPy-2.1.0-py2.4.egg/cherrypy/_cphttptools.py",
line 502, in main
body = page_handler(*args, **cherrypy.request.paramMap)
File
"/usr/local/apps/python2.4/lib/python2.4/site-packages/TurboGears-0.9a0dev_r425-py2.4.egg/turbogears/controllers.py",
line 242, in newfunc
html, *args, **kw)
File
"/usr/local/apps/python2.4/lib/python2.4/site-packages/TurboGears-0.9a0dev_r425-py2.4.egg/turbogears/database.py",
line 189, in run_with_transaction
retval = func(*args, **kw)
File
"/usr/local/apps/python2.4/lib/python2.4/site-packages/TurboGears-0.9a0dev_r425-py2.4.egg/turbogears/controllers.py",
line 262, in _execute_func
return _process_output(tg_format, output, html)
File
"/usr/local/apps/python2.4/lib/python2.4/site-packages/TurboGears-0.9a0dev_r425-py2.4.egg/turbogears/controllers.py",
line 64, in _process_output
output = view.render(output, tg_format, template=template)
File
"/usr/local/apps/python2.4/lib/python2.4/site-packages/TurboGears-0.9a0dev_r425-py2.4.egg/turbogears/view.py",
line 56, in render
return engine.render(info, format, fragment, template)
File
"/usr/local/apps/python2.4/lib/python2.4/site-packages/TurboGears-0.9a0dev_r425-py2.4.egg/turbogears/kidsupport.py",
line 141, in render
return t.serialize(encoding=self.defaultencoding, output=format,
fragment=fragment)
File
"/usr/local/apps/python2.4/lib/python2.4/site-packages/kid-0.8-py2.4.egg/kid/__init__.py",
line 232, in serialize
return serializer.serialize(self, encoding, fragment)
File
"/usr/local/apps/python2.4/lib/python2.4/site-packages/kid-0.8-py2.4.egg/kid/serialization.py",
line 51, in serialize
text = list(self.generate(stream, encoding, fragment))
File
"/usr/local/apps/python2.4/lib/python2.4/site-packages/kid-0.8-py2.4.egg/kid/serialization.py",
line 316, in generate
stream = iter(stream)
File
"/usr/local/apps/python2.4/lib/python2.4/site-packages/kid-0.8-py2.4.egg/kid/__init__.py",
line 257, in __iter__
return iter(self.transform())
File
"/usr/local/apps/python2.4/lib/python2.4/site-packages/kid-0.8-py2.4.egg/kid/__init__.py",
line 312, in transform
stream = self.pull()
File
"/usr/local/apps/python2.4/lib/python2.4/site-packages/kid-0.8-py2.4.egg/kid/__init__.py",
line 271, in pull
self.initialize()
File
"/home/jmjones/svn/home/pppweb/trunk/pppwebproject/tg/pppweb/pppweb/templates/view_cart.py",
line 19, in initialize
File
"/home/jmjones/svn/home/pppweb/trunk/pppwebproject/tg/pppweb/pppweb/templates/master.py",
line 21, in initialize
TypeError: 'NoneType' object is not callable
This is a huge pain to debug because .... how can I get at what's going
on? I've tried a suggestion someone posted here of dropping into
IPython through an IPShellEmbed() call. I can call IPShellEmbed() from
within the controller and it shows me what's going on inside the
controller. I've put the same thing in the offending template, but if
the error is occurring inside the template, it never gets called.
I guess I could look at templates/master.py .... oh, that's right - it
doesn't exist. I just googled and didn't find a flag to turn on
generation of .py files from Kid. If someone knows how, I'd appreciate
some insite. I guess I'm about to dig into kid/__init__.py to see if I
can track down more of what's going on... Just thought I'd take a
moment to whine while it's fresh on my frustration list.
- jmj
