Mailman 3 November 2005 - Twisted-web

CSS - locateChild
by dsalvatore＠freesurf.fr 19 Nov '05

19 Nov '05

Hello, In the following example, without the 'locateChild' the css style sheet is rendered, but not when I try to uses locateChild. Betwise, is this a good way to refresh a page using 'return self,()' ? Thank you for your help Salvatore from twisted.application import service, internet from nevow import loaders,rend,appserver,static class Page(rend.Page): child_css = static.File('css') docFactory = loaders.xmlfile('xmlsite.xml') def render_left(self,context,data): return data def data_menu(self,context,data): return data def locateChild(self,context,data): return self,() site = appserver.NevowSite(Page("TEST")) application = service.Application('example') internet.TCPServer(8080, site).setServiceParent(application)

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Problems Running Nevow standalone (no twisted)
by Michael Schneider 19 Nov '05

19 Nov '05

I was trying the config with no twisted. I updated from SVN, then tried this test, and it failed . Any suggestions? Thanks Mike --------------------------- test from nevow import flat, stan html = stan.Tag('html') print html p = stan.Tag('p') print p someStan = html[ p(style='font-family: Verdana;')[ 'Hello, ', 'world!' ] ] print flat.flatten(someStan) -------- Error --------------------------------- Traceback (most recent call last): File "C:\devTesting\learning\stan\learn1\basicHtml1.py", line 1, in ? from nevow import flat, stan File "C:\Python24\Lib\site-packages\nevow\__init__.py", line 12, in ? from nevow import compy File "C:\Python24\Lib\site-packages\nevow\compy.py", line 17, in ? from compyCompat import * AttributeError: 'module' object has no attribute 'IComponentized' -- The greatest performance improvement occurs on the transition of from the non-working state to the working state.

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sending svg code from livepage
by Andreas De Stefani 18 Nov '05

18 Nov '05

Hi all, I would like to display svg which is generated on the server side, I tried to do so with nevow and livepage but i experienced some problems... i tried both sending the code embedded in a <embed> and <object > tag but none of this worked... when i use a iframe to display the svg it gets all screwed up and no graphics are shown.... i was wondering if this was related to nevow/twisted as if i just point my browser (firefox) to the file ... it works just fine! thanks for any help! Andreas

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Nevow IResource trouble
by Remi Cool 18 Nov '05

18 Nov '05

Hello, after batteling with XMLRPC and getting nevow to put something on the screen, I got stuck implementing a livepage and webform example. After changing the implements to inevow.IResource in httpResource, I got a message about a missing locateChild method (is that about the same as the getChild method in a twisted web resource?) ... I've created one, but I'm not shure if it's correct. Bottomline is I can't get it to work, not from the code and not from a resource file ... what's wrong with this code? Here's my code: ----------------------------------------------------------------------------------------------- class ISimpleMethod(TypedInterface): def simple(self, name=String(description="Your name."), age=Integer(description="Your age.")): """Simple Please enter your name and age. """ class Implementation(object): implements(ISimpleMethod) def simple(self, name, age): print "Hello, %s, who is %s" % (name, age) class WebForm(rend.Page): print 'WEBFORMS:', webform.renderForms('original') docFactory = loaders.stan(tags.html[ tags.body[ tags.h1["Here is the form:"], webform.renderForms()]]) class httpResource(resource.Resource): implements(inevow.IResource) def __init__(self, service): resource.Resource.__init__(self) self.service = service ##self.putChild('RPC2', Example(self.service)) self.putChild('formtest', WebForm(Implementation())) rt = static.File("rpy") rt.ignoreExt(".rpy") rt.processors = {'.rpy': script.ResourceScript} self.putChild('rpy', rt) def render(self, request): self._clientIP = request.getClientIP() return resource.Resource.render(self, request) def render_GET(self, request): """Process HTTP GET Requests.""" print 'GET: request ->', request return '<html><body><h3>Not Implemented</h3></body></html>' def getChild(self, path, request): """This method handles http calls""" print 'getChild path:', path print 'getChild request:', request if path=="": return httpResource(self.service) else: return httpResource(self.service) def locateChild(self, ctx, segments): """""" print 'CTX:', ctx print 'SEGMENTS:', segments return self, segments components.registerAdapter(httpResource, IowwService, inevow.IResource) def main(): """""" application = service.Application('OWW', uid=1000, gid=1000) s = owwService() serviceCollection = service.IServiceCollection(application) internet.TCPServer(7080, appserver.NevowSite(s)).setServiceParent(serviceCollection) serviceCollection.startService() reactor.run() if __name__ == '__main__': main() ---------------------------------------------------------------------------- livepage.rpy ---------------------------------------------------------------------------- from nevow.livepage import handler from nevow import rend, tags, loaders def greeter(client, nodeName): client.alert("Greetings. You clicked the %s node." % nodeName) # Any string arguments after the event handler function will be evaluated # as JavaScript in the context of the web browser and results passed to the # Python event handler handler = handler(greeter, 'node.name') class Live(rend.Page): docFactory = loaders.stan( tags.html[ tags.body[ tags.ol[ tags.li(onclick=handler, name="one")["One"], tags.li(onclick=handler, name="two")["Two"], tags.li(onclick=handler, name="three")["Three"] ] ] ]) resource = Live() ------------------------------------------------------------------ testform.rpy ------------------------------------------------------------------ from formless.annotate import TypedInterface, Integer, String from nevow import rend, tags, loaders, appserver, inevow from formless import webform from zope.interface import Interface, implements class ISimpleMethod(TypedInterface): def simple(self, name=String(description="Your name."), age=Integer(description="Your age.")): """Simple Please enter your name and age. """ class Implementation(object): implements(ISimpleMethod) def simple(self, name, age): print "Hello, %s, who is %s" % (name, age) class WebForm(rend.Page): print 'WEBFORMS:', webform.renderForms('original') docFactory = loaders.stan(tags.html[ tags.body[ tags.h1["Here is the form:"], webform.renderForms()]]) resource = WebForm(Implementation())

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css File with Nevow
by dsalvatore＠freesurf.fr 18 Nov '05

18 Nov '05

Hello, I would like to use an externel xml file linked to a style sheet <html xmlns:nevow="http://nevow.com/ns/nevow/0.1"> <head> <link rel="stylesheet" href="style.css" type="text/css" /> </head> ....... The problem is that the syle sheet is not teken in account. Could someone tell me how to proceed ? Thank you very much Regards Salvatoe

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bug in README
by Jeff Bauer 15 Nov '05

15 Nov '05

In current README: < svn co svn://divmod.org/svn/Nevow/trunk Nevow > svn co http://divmod.org/svn/Divmod/trunk/Nevow Nevow Is there a better way to report bugs? The divmod trac is restricted. -- Jeff Bauer http://serpentaddiction.blogspot.com Rubicon, Inc. http://www.rubic.com

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Use Nevow in conjunction with XMLRPC
by Remi Cool 15 Nov '05

15 Nov '05

G'day, My goal is to create a Twisted server that implements XMLRPC, Nevow and PHP (for transition of the old webapp). XMLRPC works again (thanks to Daniel and Matt) ... but I can't get Nevow working as a child of the httpResource. Or is there a better (Twisted) way of doing this (without using tap)? The code: from formless.annotate import TypedInterface, Integer, String from nevow import rend, tags, loaders from formless import webform class ISimpleMethod(TypedInterface): def simple(self, name=String(description="Your name."), age=Integer(description="Your age.")): """Simple Please enter your name and age. """ class Implementation(object): implements(ISimpleMethod) def simple(self, name, age): print "Hello, %s, who is %s" % (name, age) class WebForm(rend.Page): document = loaders.stan(tags.html[ tags.body[ tags.h1["Here is the form:"], webform.renderForms('original')]]) class httpResource(resource.Resource): implements(resource.IResource) def __init__(self, service): resource.Resource.__init__(self) self.service = service self.putChild('RPC2', Example(self.service)) self.putChild('formtest', resource.Resource(WebForm(Implementation()))) def render(self, request): self._clientIP = request.getClientIP() return resource.Resource.render(self, request) def render_GET(self, request): """Process HTTP GET Requests.""" print 'GET: request ->', request return '<html><body><h3>Not Implemented</h3></body></html>' def getChild(self, path, request): """This method handles http calls""" print 'getChild path:', path print 'getChild request:', request if path=="": return httpResource(self.service) else: return httpResource(self.service) components.registerAdapter(httpResource, IowwService, resource.IResource)

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Can't get XMLRPC server working with Twisted 2.1
by Remi Cool 15 Nov '05

15 Nov '05

Hello Twisters, I've looked in the documentation, searched the archives and the web, but found no solution to the XMLRPC problem I'm having. I've used the finger example code to create an XMLRPC server, but I keep getting the 405 Method not allowed error. I'm probably overlooking something very obvious, call me stupid, but I can't get it to work. Below the code I'm using. If someone has a clue ... please enlighten me. -- Remi -- Server code: #!/usr/bin/env python # -*- coding: iso-8859-15 -*- """""" import sys from twisted.application import internet, service from twisted.internet import reactor, protocol, defer from twisted.web import resource, server, static, xmlrpc from twisted.python import components, rebuild from zope.interface import Interface, implements class myXMLRPC(xmlrpc.XMLRPC): """This class contains all root xmlrpc methods and the modules subhandler.""" def __init__(self, service): xmlrpc.XMLRPC.__init__(self) self.service = service def xmlrpc_echo(self, x): """Simple echo function""" return x def catchError(err): return "Internal error in server" class IowwService(components.Interface): """""" def rebuild(self, modname): """Rebuild classes in given module""" class httpResource(resource.Resource): implements(resource.IResource) def __init__(self, service): resource.Resource.__init__(self) self.service = service self.putChild('RPC2', myXMLRPC(self.service)) def render(self, request): self._clientIP = request.getClientIP() return resource.Resource.render(self, request) def render_GET(self, request): """Process HTTP GET Requests.""" return '<html><body><h3>Not Implemented</h3></body></html>' def getChild(self, path, request): """This method handles http calls""" return httpResource(self.service) components.registerAdapter(httpResource, IowwService, resource.IResource) class owwService(service.Service): """""" implements(IowwService) def rebuild(self, modname): """Rebuild classes in given module""" mod = sys.modules[modname] rebuild.rebuild(mod) def main(): """""" application = service.Application('OWW', uid=100, gid=100) s = owwService() serviceCollection = service.IServiceCollection(application) internet.TCPServer(7080, server.Site(resource.IResource(s))).setServiceParent(serviceCollection) serviceCollection.startService() reactor.run() if __name__ == '__main__': main() And the client code: #!/usr/bin/env python from twisted.web.xmlrpc import Proxy from twisted.internet import reactor def printValue(value): print repr(value) reactor.stop() def printError(error): print 'error', error reactor.stop() proxy = Proxy('http://localhost:7080') proxy.callRemote('echo', 'hello world').addCallbacks(printValue, printError) reactor.run()

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PHP support on Windows
by Abdallah Deeb 14 Nov '05

14 Nov '05

Hello everyone, I'm trying to run some php code on twisted.web using some simple code. it works on my gentoo system but fails on Windows XP. The problem only appears when running PHP code, html is served with no problems. The code is as follows: (taken from one of the samples) import os from twisted.internet import reactor from twisted.application import internet, service from twisted.web import static, server, twcgi, script class PHPScript(twcgi.FilteredScript): filter = 'c:\\PHP\\php' root = static.File(os.getcwd()) root.processors = { '.php': PHPScript, '.epy': script.PythonScript, '.rpy': script.ResourceScript, } application = service.Application('web') site = server.Site(root) reactor.listenTCP(1999, site) reactor.run() and the error I get is ... (partially) C:\Python24\lib\site-packages\twisted\internet\default.py, line 179 in spawnProcess 177 # raise NotImplementedError, "process not available since win32all is not installed" 178 else: 179 raise NotImplementedError, "process only available in this " \ 180 "reactor on POSIX, use win32eventreactor on Windows" I'm running php 4.3.7 with the latest release of twisted, python 2.4.1 and Windows XP Pro TIA Abdallah Deeb

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Weird problem with XMLRPC -> ('405', 'Method Not Allowed')
by Remi Cool 10 Nov '05

10 Nov '05

I've run into a problem with my twisted xmlrpc test server (using twisted version 2.01 or 2.1). Every time the client calls the echo function a '405 Method Not Allowed is returned'. This code ran in Twisted 1.3 without problems ... what's changed besides the zope interface implements. Any ideas? Here's the server code: #!/usr/bin/env python # -*- coding: iso-8859-15 -*- """""" import sys from twisted.application import internet, service from twisted.internet import reactor, protocol, defer from twisted.web import resource, server, static, xmlrpc from twisted.python import components, rebuild from zope.interface import Interface, implements class myXMLRPC(xmlrpc.XMLRPC): """This class contains all root xmlrpc methods and the modules subhandler.""" def __init__(self, service): xmlrpc.XMLRPC.__init__(self) self.service = service def xmlrpc_echo(self, x): """Simple echo function""" return x def catchError(err): return "Internal error in server" class IowwService(components.Interface): """""" def rebuild(self, modname): """Rebuild classes in given module""" class httpResource(resource.Resource): implements(resource.IResource) def __init__(self, service): resource.Resource.__init__(self) self.service = service self.putChild('RPC2', myXMLRPC(self.service)) def render(self, request): self._clientIP = request.getClientIP() return resource.Resource.render(self, request) def render_GET(self, request): """Process HTTP GET Requests.""" return '<html><body><h3>Not Implemented</h3></body></html>' def getChild(self, path, request): """This method handles http calls""" return httpResource(self.service) components.registerAdapter(httpResource, IowwService, resource.IResource) class owwService(service.Service): """""" implements(IowwService) def rebuild(self, modname): """Rebuild classes in given module""" mod = sys.modules[modname] rebuild.rebuild(mod) def main(): """""" application = service.Application('OWW', uid=100, gid=100) s = owwService() serviceCollection = service.IServiceCollection(application) internet.TCPServer(7080, server.Site(resource.IResource(s))).setServiceParent(serviceCollection) serviceCollection.startService() reactor.run() if __name__ == '__main__': main() And the client code: #!/usr/bin/env python from twisted.web.xmlrpc import Proxy from twisted.internet import reactor def printValue(value): print repr(value) reactor.stop() def printError(error): print 'error', error reactor.stop() proxy = Proxy('http://localhost:7080') proxy.callRemote('echo', 'hello world').addCallbacks(printValue, printError) reactor.run()

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