Hi All!
I've read the document " A Pylons controller with MoinMoin as a WSGI
callable" and I've tried to make the same with trac. I get it working
but I'm with a doubt!
first of all, the recipe :) (I called my project 'embed')
from embed.lib.base import *
from trac.web.main import dispatch_request
from authkit.permissions import NotAuthenticatedError
import os
#os.environ["TRAC_ENV"] = '/var/trac/jornalismo'
template = """\
<html>
<head><title>Please Login!</title></head>
<body>
<h1>Please Login</h1>
<form action="" method="post">
<dl>
<dt>Username:</dt>
<dd><input type="text" name="username"></dd>
<dt>Password:</dt>
<dd><input type="password" name="password"></dd>
</dl>
<input type="hidden" name="r" value="%s" />
<input type="submit" name="authform" />
<hr />
</form>
</body>
</html>
"""
class MeutracController(BaseController):
def tracpage(self, *args, **kwargs):
# Thanks to ianbicking for a workaround of an empty wsgi.input value
os.environ['TRAC_ENV'] = "/var/trac/experiencias"
#request.environ['REMOTE_USER'] = 'walter'
if request.environ['PATH_INFO'] == '/logout':
del(session['user'])
session.save()
h.redirect_to('/')
if request.environ['PATH_INFO'] == '/login' and not session.get('user'):
#raise NotAuthenticatedError('Not Authenticated')
return self._redirect_to_sign_in()
if session.get('user'):
request.environ['REMOTE_USER'] = session.get('user')
a = dispatch_request(request.environ, self.start_response)
if len(a) == 0:
return ['']
return a
def _redirect_to_sign_in(self):
if len(request.params) > 1 and request.params['password'] ==
request.params['username']:
session['user'] = request.params['username']
session.save()
h.redirect_to('/')
else:
return Response(template)
And in routings.py:
map.connect('trac/*path_info', controller='meutrac',
action='tracpage',path_info='/')
It's working. I have used a basic authentication, as I've found in a
example on the wiki.
My doubts:
First:
Look these lines:
a = dispatch_request(request.environ, self.start_response)
if len(a) == 0:
return ['']
return a
I don't know if the problem is on the trac side or in the Pylons side:
If I replace these lines with the common:
return dispatch_request(request.environ, self.start_response)
When I call a pege, i get these errors:
Exception happened during processing of request from ('127.0.0.1', 56302)
Traceback (most recent call last):
File
"/usr/lib/python2.4/site-packages/Paste-1.3-py2.4.egg/paste/httpserver.py",
line 592, in process_request_in_thread
self.finish_request(request, client_address)
File "SocketServer.py", line 254, in finish_request
self.RequestHandlerClass(request, client_address, self)
File "SocketServer.py", line 521, in __init__
self.handle()
File
"/usr/lib/python2.4/site-packages/Paste-1.3-py2.4.egg/paste/httpserver.py",
line 400, in handle
BaseHTTPRequestHandler.handle(self)
File "BaseHTTPServer.py", line 316, in handle
self.handle_one_request()
File
"/usr/lib/python2.4/site-packages/Paste-1.3-py2.4.egg/paste/httpserver.py",
line 395, in handle_one_request
self.wsgi_execute()
File
"/usr/lib/python2.4/site-packages/Paste-1.3-py2.4.egg/paste/httpserver.py",
line 266, in wsgi_execute
self.wsgi_start_response)
File "/usr/lib/python2.4/site-packages/Paste-1.3-py2.4.egg/paste/cascade.py",
line 92, in __call__
return self.apps[-1](environ, start_response)
File "/usr/lib/python2.4/site-packages/Paste-1.3-py2.4.egg/paste/registry.py",
line 327, in __call__
app_iter = self.application(environ, start_response)
File
"/usr/lib/python2.4/site-packages/Paste-1.3-py2.4.egg/paste/recursive.py",
line 80, in __call__
return self.application(environ, start_response)
File
"/usr/lib/python2.4/site-packages/Paste-1.3-py2.4.egg/paste/errordocument.py",
line 185, in __call__
app_iter = self.application(environ, change_response)
File
"/usr/lib/python2.4/site-packages/Paste-1.3-py2.4.egg/paste/evalexception/middleware.py",
line 186, in __call__
return self.respond(environ, start_response)
File
"/usr/lib/python2.4/site-packages/Pylons-0.9.5-py2.4.egg/pylons/error.py",
line 249, in respond
exc_info)
File
"/usr/lib/python2.4/site-packages/Paste-1.3-py2.4.egg/paste/errordocument.py",
line 183, in change_response
return start_response(status, headers, exc_info)
File
"/usr/lib/python2.4/site-packages/Pylons-0.9.5-py2.4.egg/pylons/error.py",
line 225, in respond
app_iter = self.application(environ, detect_start_response)
File
"/usr/lib/python2.4/site-packages/Paste-1.3-py2.4.egg/paste/httpexceptions.py",
line 633, in __call__
self.send_http_response, catch=HTTPException)
File "/usr/lib/python2.4/site-packages/Paste-1.3-py2.4.egg/paste/wsgilib.py",
line 225, in catch_errors_app
app_iter = application(environ, start_response)
File
"/usr/lib/python2.4/site-packages/PasteDeploy-1.3-py2.4.egg/paste/deploy/config.py",
line 164, in __call__
app_iter = self.application(environ, start_response)
File
"/usr/lib/python2.4/site-packages/Pylons-0.9.5-py2.4.egg/pylons/wsgiapp.py",
line 261, in __call__
return self.app(environ, start_response)
File
"/usr/lib/python2.4/site-packages/Beaker-0.7.3-py2.4.egg/beaker/cache.py",
line 175, in __call__
return self.app(environ, start_response)
File
"/usr/lib/python2.4/site-packages/Beaker-0.7.3-py2.4.egg/beaker/session.py",
line 388, in __call__
response = self.wrap_app(environ, session_start_response)
File
"/usr/lib/python2.4/site-packages/Routes-1.7.1dev_r368-py2.4.egg/routes/middleware.py",
line 104, in __call__
response = self.app(environ, start_response)
File
"/usr/lib/python2.4/site-packages/Pylons-0.9.5-py2.4.egg/pylons/wsgiapp.py",
line 96, in __call__
raise Exception("No content returned by controller: %s" % \
Exception: No content returned by controller: MeutracController
But everything works as expected! Is that a problem with trac?
Second:
If I enable the authkit middleware, I get these errors:
File
'/home/walter/devel/python/pylons_projects/embed/embed/controllers/meutrac.py',
line 45 in tracpage
a = dispatch_request(request.environ, self.start_response)
File '/var/lib/python-support/python2.4/trac/web/main.py', line 440 in
dispatch_request
req.send_error(sys.exc_info(), status=500)
File '/var/lib/python-support/python2.4/trac/web/api.py', line 397 in send_error
self.write(data)
File '/var/lib/python-support/python2.4/trac/web/api.py', line 460 in write
self._write(data)
TypeError: 'NoneType' object is not callable
Thet are in the trac side.
Am I doing something wrong or there's something weird about trac?
(I will post that recipe at the confluence wiki!)
[]'s
- Walter
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