Revision Log

tut10_http_errors.py

Revision 1278 (checked in by fumanchu, 2 years ago)

More (final?) config overhaul work:

Removed cherrypy.config.get! Instead, you should directly inspect cherrypy.request, response, server, etc. Note that request.config.get still works fine.
a) cherrypy.log is now an instance of LogManager?. It's still callable, but now is the object you inspect instead of calling config.get("log*"). b) cherrypy.log_access is now cherrypy.log.access.
All threads should now have access to default Request and Response objects, not just the main thread.
deadlock.timeout is now request.timeout.
Renamed config.py to _cpconfig.py; cherrypy.config is now an instance of _cpconfig.Config.

I still need to decide what to do about log_config (removed for now).

Property svn:eol-style set to native

Line
1	"""
2
3	Tutorial: HTTP errors
4
5	HTTPError is used to return an error response to the client.
6	CherryPy has lots of options regarding how such errors are
7	logged, displayed, and formatted.
8
9	"""
10
11	import os
12	localDir = os.path.dirname(__file__)
13	curpath = os.path.normpath(os.path.join(os.getcwd(), localDir))
14
15	import cherrypy
16
17
18	class HTTPErrorDemo(object):
19
20	# Set a custom response for 403 errors.
21	_cp_config = {'error_page.403' : os.path.join(curpath, "custom_error.html")}
22
23	def index(self):
24	# display some links that will result in errors
25	tracebacks = cherrypy.request.show_tracebacks
26	if tracebacks:
27	trace = 'off'
28	else:
29	trace = 'on'
30
31	return """
32	<html><body>
33	<h2><a href="toggleTracebacks">Toggle tracebacks %s</a></h2>
34	<p><a href="/doesNotExist">Click me; I'm a broken link!</a></p>
35	<p><a href="/error?code=403">Use a custom an error page from a file.</a></p>
36	<p>These errors are explicitly raised by the application:</p>
37	<ul>
38	<li><a href="/error?code=400">400</a></li>
39	<li><a href="/error?code=401">401</a></li>
40	<li><a href="/error?code=402">402</a></li>
41	<li><a href="/error?code=500">500</a></li>
42	</ul>
43	<p><a href="/messageArg">You can also set the response body
44	when you raise an error.</a></p>
45	</body></html>
46	""" % trace
47	index.exposed = True
48
49	def toggleTracebacks(self):
50	# simple function to toggle tracebacks on and off
51	tracebacks = cherrypy.request.show_tracebacks
52	cherrypy.config.update({'request.show_tracebacks': not tracebacks})
53
54	# redirect back to the index
55	raise cherrypy.HTTPRedirect('/')
56	toggleTracebacks.exposed = True
57
58	def error(self, code):
59	# raise an error based on the get query
60	raise cherrypy.HTTPError(status = code)
61	error.exposed = True
62
63	def messageArg(self):
64	message = ("If you construct an HTTPError with a 'message' "
65	"argument, it wil be placed on the error page "
66	"(underneath the status line by default).")
67	raise cherrypy.HTTPError(500, message=message)
68	messageArg.exposed = True
69
70
71	cherrypy.tree.mount(HTTPErrorDemo())
72
73
74	if __name__ == '__main__':
75	# Start the CherryPy server.
76	cherrypy.config.update(os.path.join(os.path.dirname(__file__), 'tutorial.conf'))
77	cherrypy.server.quickstart()
78	cherrypy.engine.start()

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