Twisted-web March 2007

twisted-web@python.org

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Test
by Philippe Lafoucrière 05 Aug '21

05 Aug '21

Hi all just a test

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request.args empty when rendering PUT?
by Jarek Zgoda 28 Mar '07

28 Mar '07

I just discovered, that when using twisted.web and resource framework, request.args are empty when I render the PUT method. Specifically, if I issue http.request('PUT', path, params, headers) (http is httplib.HTTPConnection object) and the params is urlencoded dictionary, in the resource's render_PUT method I get request.args equal to {}. Is this intended, or should I do something to enable passing data to PUT method? -- Jarek Zgoda "We read Knuth so you don't have to."

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newb: Twisted and API for Web Services
by Ram Peters 22 Mar '07

22 Mar '07

Question1: How do I distinguish the request in Twisted web for each uri and call the appropriate class to handle the request, and response back a xml data? Question2: It will be listening on port 8080. How does this get translated to url? For example, my URI as follows: http://api.example.org/auto/Ford http://api.example.org/auto/Chevy http://api.example.org/auto/add http://api.example.org/auto/delete http://api.example.org/dealer/inventory http://api.example.org/dealer/invoice Thank you, it would be nice if you guys moved your mailing list to google groups. Just my 2 cents.

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Using web2 to run a Cherrpy site
by David Konerding 22 Mar '07

22 Mar '07

Hi, I am using web2 to run a cherrypy server at the root of the site using WSGI. I've got a nearly working set up, the only problem is that when a request comes in for the root of the site, it gets redirected back to itself: % curl http://localhost:8080 This resource resides temporarily at <a href='http://localhost:8080/'> http://localhost:8080/</a> Intriguingly, if I request locations below the root, things work more OK: % curl http://localhost:8080/test/index then it works OK, even though I am registering the cherrypy at the root of the site. I've experimented, and if I register the cherrypy site in a subdir, everything works normally as expected! Here's the code that puts it at the root of the site. I've tested this code with a basic WSGI app, and it works OK. Only cherrypy seems to have this problem. One clue is that the logger shows that the URL being requested is '//' instead of '/': 2007-03-18 19:07:02-0700 [HTTPChannel,6,127.0.0.1] 127.0.0.1 - - [18/Mar/2007:19:07:02] "GET // HTTP/1.1" 302 97 "" "curl/7.15.1 (i686-suse-linux) libcurl/7.15.1 OpenSSL/0.9.8a zlib/1.2.3 libidn/0.6.0" Here's the nearly working test example: from twisted.application import service, strports from twisted.web2 import server, channel from twisted.web2 import log from twisted.web2 import wsgi from twisted.web2.wsgi import WSGIResource from cherrypy._cpwsgi import wsgiApp import cherrypy ## Basic cherrypy index object that dumps the WSGI environment class Root(object): @cherrypy.expose def index(self): s = [] for key in cherrypy.request.wsgi_environ: s.append("%s=%s<br/>" % (key, cherrypy.request.wsgi_environ [key])) return "".join(s) ## Run this site using "twistd -noy" if __name__ == '__builtin__': ## Create an instance of the root object and mount it at / r = Root() cherrypy.tree.mount(r, '/') wsgi = wsgi.WSGIResource(wsgiApp) ## Set up the cherrypy environment cherrypy.config.update({ 'server.environment':'production', 'server.socketHost':'127.0.0.1', }) ## Start the cherrypy server; don't actually run an HTTP server, though cherrypy.server.start(initOnly=True, serverClass=None) ## Setup default common access logging res = log.LogWrapperResource(wsgi) log.DefaultCommonAccessLoggingObserver().start() # Create twisted web2 site site = server.Site(res) application = service.Application("demo") ## Launch the HTTP site at port 8080 s = strports.service('tcp:8080', channel.HTTPFactory(site)) s.setServiceParent(application)

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Divmod Nevow 0.9.18
by Tristan Seligmann 21 Mar '07

21 Mar '07

Hi all, I'm pleased to announce the Divmod Nevow 0.9.18 release (tagged about a month ago), available here: <http://divmod.org/trac/attachment/wiki/SoftwareReleases/Nevow-0.9.18.tar.gz…> I'm including the changelog for 0.9.18, and all previous releases since the last announced release. Brace yourself for impending verbosity, as 0.9.0 was 18 versions and 9 months ago! 0.9.18 (2007-02-23): - Athena 'connection lost' notification now styleable via the 'nevow-connection-lost' CSS class. - The 'runjstests' script has been removed, now that JS tests can be run with trial. 0.9.17 (2006-12-08): - More efficient JSON string parsing. - Give FakeRequests a default status code of OK. Accept all of FakeRequest.__init__'s arguments in the __init__ of AccumulatingFakeRequest. 0.9.16 (2006-11-17): - Updated nit to work with Twisted trunk. - Athena module import caching has been fixed. 0.9.15 (2006-11-08): - Changed _LiveMixin rendering to be idempotent to support the case where a transport hiccup causes a LiveFragment or LiveElement to be sent to the browser multiple times. - Improvements to the tests. 0.9.14 (2006-10-31): - Support code for running non-browser javascript tests has been added. - Added a workaround for nodeById on widgets not yet added to the document in IE. - Athena will now invoke the nodeInserted method (if it exists) on a widget that it instantiates statically. - ID rewriting, similar to existing rewriting support for 'id' attributes, has been added in 'for' and 'headers' attributes of 'label' and 'td'/'th' elements, respectively. 0.9.13 (2006-10-21): - Adjust non-selected panes in tabbedpane to be further out of the viewport. - Convert to using the Javascript module plugin system for Nevow-provided modules. 0.9.12 (2006-10-17): - Added id rewriting for LiveElement and LiveFragment, such that id attributes in a widget template are rewritten so that they are unique to the widget instance. A client-side API, Nevow.Athena.Widget.nodeById(), is provided to allow location of these nodes. 0.9.11 (2006-10-10): - Fixed dynamic widget instantiation in IE. - Added support for correctly quoting the values of slots which are used as attributes. 0.9.10 (2006-10-05): - Minor update to nevow.testutil. 0.9.9 (2006-09-26): - Several nit changes, including the addition of the "check" method to Failure, and the addition of an "assertFailure" method. - The ability to pass Python exceptions to Javascript has been added to Athena. - Dynamic module import has been added for the cases where it is necessary to dynamically add a widget to an existing page. 0.9.8 (2009-09-20): - A bug in nit that caused it to fail if there were too many tests in a test case, and swallow failures in some cases, has been fixed. - Widgets can no longer be added to a page after render time using Divmod.Runtime.Platform.{set,append}NodeContent. Instead, they must be added using Nevow.Athena.Widget.addChildWidgetFromWidgetInfo. 0.9.7 (2009-09-12): - Automatic Athena event handler registration is fixed for all supported browsers and is no longer document-sensitive (ie, it works inside tables now). - Nit has gained a new assertion method, assertIn. 0.9.6 (2008-08-30): - Fixed a bug in the IE implementation of the runtime.js node fetching functions. 0.9.5 (2006-08-22): - Instance attributes can now be exposed to Athena with nevow.utils.Expose and Expose.exposedMethodNames() no longer returns unexposed names. 0.9.4 (2006-08-14): - Added test method discovery to nit test cases, so multiple test methods may be put in a single test case. - use XPath for certain DOM traversals when available. This yields significant speedups on Opera. - Made Divmod.Runtime.Platform.getAttribute deal with IE attribute name-mangling properly. - Javascript logging is now done in Firebug 0.4 style rather than 0.3. - Some cases where Deferred-returning render methods raised exceptions or buried failures were fixed. - Removed MochiKit. The pieces Nevow depends on have been moved to Divmod.Base in nevow/base.js. - Various doc fixes. 0.9.3 (2006-07-17): - Page rendering now supports preprocessors. 0.9.2 (2006-07-08): - Fixes to the typeahead demo. - Elements are now automatically serialized by json, just like Fragments. 0.9.1 (2006-07-05): - Made nevow.athena.expose the mandatory means of publishing a method to the browser. The allowedMethods dictionary will no longer be respected. - Added nevow.page.Element and nevow.athena.LiveElement: these are preferred over nevow.rend.Fragment and nevow.athena.LiveFragment for all new development. -- mithrandi, i Ainil en-Balandor, a faer Ambar

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page.Element render directives don't support arguments
by Phil Mayers 21 Mar '07

21 Mar '07

So, on a rend.Page you can do: T.div[ T.directive('field textbox dbcolumn1'), T.directive('field textarea dbcolumn2'), ] def render_field(self, what): kind, dbcol = what.split(' ') return widgets[kind](value=self.dbrow[dbcol]) ...however page.Element's "rendered" method doesn't see the spaces in the T.directive and instead looks for a render method called: "field textbox dbcolumn1" ...which is not useful. Intentional or just missed?

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Re: [Twisted-Python] What is the most recent compatible combination of Twisted and Twisted.web2?
by glyph＠divmod.com 15 Mar '07

15 Mar '07

On 02:14 am, jonathansamuel(a)yahoo.com wrote: >My Redhat 7.3/Python 2.5 box had TwistedWeb2-0.2.0 and >Twisted 2.5 . However, they are not compatible. > >What is the most recent combination of Twisted and >Twisted.Web2 that I could use together? Since no "blessed" production-ready release of web2 is yet available, you are probably better off checking it out from Twisted trunk, or checking out the entire Twisted trunk together. If you're interested in rectifying this situation, the path to a web2 release is pretty well plotted in the Twisted tracker already, and you could submit patches to the tickets in there. Start here: http://twistedmatrix.com/trac/query?status=new&status=assigned&status=reope… -Gold-Master Also, since this question is more appropriate to the twisted-web list I am cross-posting the response there. Please follow up without cross- posting to twisted-python. Good luck!

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Vote: The Engine of Your Internet
by Duncan McGreggor 13 Mar '07

13 Mar '07

Vote now! In the spirit of all contests that are thinly disguised high school popularity contests, there is a poll up on jyte.com, and we need your help! http://jyte.com/cl/twistedmatrix.com-is-the-engine-of-your-internet Because, if we loose... well... the Jocks will get to claim the sandpit for their debauched parties, and where will we host our late-night chess and math club parties? d

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Using Twisted with django
by Ram Peters 13 Mar '07

13 Mar '07

I want to handle reporting part of my app with Twisted and rest will be handled with Django. I have Django setup on mod_python. There is some mention of "I want a container for my WSGI application" in TwistedMatrix. Does it mean twisted just handle the request and forward to some other framework? Does TwistedMatrix support mod_python? Can I use twisted with django models and django templating system? Thank you. John

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Setting server.Site.protocol stops the site factory resource class from renderin
by Steve doh 05 Mar '07

05 Mar '07

I have the code below that works fine. If I uncomment the 3rd to last line so that the site.protocol uses the ServerProtocol class, then the render_GET() method does not get called and the browser waits for a response. I understand why this is happening but don't know how to fix it. I need to override the connectionMade() method for the site factory inorder to verify the connection. Can someone explain how I override connectionMade() correctly? Any help appreciated. Cheers Steve import os, sys from twisted.web import http, static, server, resource from twisted.internet.protocol import Protocol from twisted.internet import reactor class Simple(resource.Resource): def render_GET(self, request): sess = request.getSession() request.write("<html>") request.write("Hi there") request.write("</html>") request.finish() return server.NOT_DONE_YET class ServerProtocol(Protocol): def connectionMade(self): print "[connectionMade] entering function....." os.chdir('D:\\web') root = Simple() root.putChild('index.html', Simple()) site = server.Site(root) #site.protocol = ServerProtocol reactor.listenTCP(80, site) reactor.run() _________________________________________________________________ Shop til you drop at XtraMSN Shopping http://shopping.xtramsn.co.nz/home/

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Twisted-web March 2007