Mercurial > hg > discussions

comparison discusssions/dispatcher.py @ 0:c904249afb04

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
initial commit of discussions
author k0s <k0scist@gmail.com>
date Sat, 02 Jan 2010 13:36:23 -0500
parents
children
comparison
equal deleted inserted replaced
-1:000000000000 0:c904249afb04
1 """
2 request dispatcher:
3 data persisting across requests should go here
4 """
5
6 import os
7
8 from handlers import Index
9
10 from genshi.template import TemplateLoader
11 from paste.fileapp import FileApp
12 from pkg_resources import resource_filename
13 from webob import Request, Response, exc
14
15 class Dispatcher(object):
16
17 ### class level variables
18 defaults = { 'auto_reload': 'False',
19 }
20
21 def __init__(self, **kw):
22
23 # set instance parameters from kw and defaults
24 for key in self.defaults:
25 setattr(self, key, kw.get(key, self.defaults[key]))
26 self.auto_reload = self.auto_reload.lower() == 'true'
27
28 # request handlers
29 self.handlers = [ Index ]
30
31 # template loader
32 templates_dir = resource_filename(__name__, 'templates')
33 self.loader = TemplateLoader(templates_dir,
34 auto_reload=self.auto_reload)
35
36 def __call__(self, environ, start_response):
37
38 # get a request object
39 request = Request(environ)
40
41 # get the path
42 path = request.path_info.strip('/').split('/')
43 if path == ['']:
44 path = []
45 request.environ['path'] = path
46
47 # match the request to a handler
48 for h in self.handlers:
49 handler = h.match(self, request)
50 if handler is not None:
51 break
52 else:
53 handler = exc.HTTPNotFound
54
55 # add navigation links to handler [example]
56 if hasattr(handler, 'data'):
57 handler.data.setdefault('links', [])
58 for h in self.handlers:
59 handler.data['links'].append((handler.link(h.handler_path),
60 h.__name__))
61
62 # get response
63 res = handler()
64 return res(environ, start_response)