On Nov 6, 2007, at 5:16 AM, Max Ischenko wrote:
> Hello,
>
> I want to write a generic error handler which will display
> meaningful page to the user in case some particular error occurs.
>
> I have tried to override WSGIController.__call__ using the
> following code but it doesn't work:
>
> try:
> return WSGIController.__call__(self, environ,
> start_response)
> except model.SQLError, e:
> c.message = e
> c.code = 500
> return render('/custom_error.html')
>
> When executed it simply prints a traceback to stderr:
>
> File "/usr/lib/python2.5/site-packages/Paste-1.4-py2.5.egg/paste/
> httpserver.py", line 287, in wsgi_execute
> self.wsgi_start_response)
> File "/usr/lib/python2.5/site-packages/Paste-1.4-py2.5.egg/paste/
> translogger.py", line 67, in __call__
> return self.application(environ, replacement_start_response)
> File "/usr/lib/python2.5/site-packages/Paste-1.4-py2.5.egg/paste/
> debug/prints.py", line 98, in __call__
> environ, self.app)
> File "/usr/lib/python2.5/site-packages/Paste-1.4-py2.5.egg/paste/
> wsgilib.py", line 540, in intercept_output
> if data[0] is None:
> IndexError: list index out of range
>
__call__ is the outer realm of Pylons Controllers -- its result are
returned directly to the PylonsBaseWSGIApp. What it expects from the
Controller is either a Pylons/Paste response object (that is,
Controller does the work of grabbing the global pylons.response and
returning that), or a typical WSGI response.
--
Philip Jenvey
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