[PEAK] start of an error template, and a few questions

Wed Feb 11 01:31:29 EST 2004

Here's the start of an error template to be used while debugging.  A few 
questions I encountered:
  * My emacs ~ files threw me for a loop for a while - ResourceDirectory 
won't find the template with the ~ file in the directory - is there any 
way to exclude ~ files from being seen?
  * Is it possible to nest list domlets?  The request environment is a 
map, how would you iterate over all items in the map, separating the key 
and value?

Any comments on how I'm doing this would be welcome.  I'm not sure if 
the method for accessing data from the interaction is correct.

Thanks,
Wayne

error_404.pwt:
--------------
<html>
<head>
<title><span domlet="text.notag:httpStatus" /> Error</title>
<style type="text/css">
body { font-family: Verdana, Arial, sans-serif; }
pre { background-color: #eeeeee; border: 1px solid #000; padding: 20px; }
#footer { border-top: 1px solid #000; }
</style>
</head>
<body>
<h1>Error <span domlet="text.notag:httpStatus" /></h1>
<div>An error occurred when visiting the uri: <strong 
domlet="text:requestUri">/something/here</strong></div>
<h2>Traceback</h2>
<pre domlet="list:formattedException">
<span define="listItem" domlet="text.notag" /><br />
</pre>
<h2>Request Environment</h2>
<ul domlet="list:environment">
   <li define="listItem" domlet="text" >list item</li>
</ul>
<div id='footer'>peak.web</div>
</body>
</html>

Exception Decorator:
--------------------

import traceback

class WebExceptionDecorator(Decorator):
     protocols.advise(
         instancesProvide = [IWebTraversable],
         factoryMethod = 'asTraversableFor',
         asAdapterForTypes = [WebException],
         )

     security.allow(
         formattedException = security.Anybody,
         environment = security.Anybody,
         requestUri = security.Anybody,
         )

     environment = binding.Make(lambda s: \
                    s.ob.interaction.request.environment.items())

     requestUri = binding.Make(lambda s: \
                    s.ob.interaction.request.environment['REQUEST_URI'])

     formattedException = binding.Make(lambda s: \
                    traceback.format_exception(s.ob.exc_info[0],
                                               s.ob.exc_info[1],
                                               s.ob.exc_info[2]))