Mailman 3 July 2008 - Twisted-web

Test
by Philippe Lafoucrière 05 Aug '21

05 Aug '21

Hi all just a test

3 2

learning nevow, any good tutorial on twisted/nevow authenication?
by frank liu 27 Jul '08

27 Jul '08

thanks in advance.

2 1

Question about using Stackless with Twisted.
by inhahe 24 Jul '08

24 Jul '08

I don't know very much about Twisted, but I would like to know how easy would it be to use twisted with WSGI and use it with Stackless so that I could use Twisted's defereds but wrap them in a way so that upon callback my tasklets resume where they had called the defereds using stackless channels. to make it more clear, it would be something like: def dcall(function, paramaters): dcall2(function, parameters, stackless.channel()) def dcall2(function, parameters, ch): def callback(result): ch.send(result) twisted.add_callback(function, parameters, callback) return ch.receive() # in my html rendering.. # do stuff favorite_color = dcall(async_cursor_execute('select * from favorite_colors where userid=?', userid)["favoritecolor"] # do more stuff know what I mean? thanks in advance.

1 1

newbiew question
by arun chhetri 23 Jul '08

23 Jul '08

from twisted.web import resource, server from twisted.web import http class HomePage(resource.Resource): def __init__(self): resource.Resource.__init__(self) self.putChild('calendar',Calendar(user=None,pswd=None,server=None)) def render(self,request): return"""<html><body> <a href = calendar>Here is the solution <body> </html>""" def getChild(self,path,request): return Calendar(request.args["user"],request.args["pswd"],request.args["server"]) class Calendar(resource.Resource): def __init__(self,user,pswd,server): resource.Resource.__init__(self) self.user = user self.pswd = pswd self.server = server self.putChild('month',Month(user)) def render(self,request): return"""<p> The user is %s <a href=/calendar/month> The link to the month is this """%self.user[0] def getChild(self,path,request): return Month(self.user[0]) class Month(resource.Resource): def __init__(self,user): resource.Resource.__init__(self) self.user = user def render(self,request): return """ %s"""%self.user if __name__=="__main__": from twisted.internet import reactor root = HomePage() site = server.Site(root) reactor.listenTCP(8000,site) reactor.run() now if i go to http://localhost:8000/?user=arun&pswd=test&server=test i get this The user is arun The link to the month is this<http://localhost:8000/calendar/month> and if I click the link then I get None Can anybody help me how I can redirect the value self.user to Month so that instead of None it shows the user name provided in query string Thanks in advance

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IDocFactory.load
by Tim Stebbing 23 Jul '08

23 Jul '08

G'day, Our app has a few custom loaders which back in the ctx days would have adapted ctx to get the request which we would do various things with. Recently the ctx has stopped being passed (yay), and I had guessed it would be replaced with a request, but it seems that is not the case. It seems like a sensible change for IDocFactory.load to be passed a request (optionally, as the old ctx was), which ideally page.Element.render would push through. Looking at Element.render the request is right there anyway, yet we're passing a None. thoughts? tjs

2 1

twisted.web2: stream duplication ?
by shad 22 Jul '08

22 Jul '08

Hello, Is there a simple way to duplicate a stream ? For example, a file uploaded as POST has a stream. This stream can be GET by a client, but not several. What can I do to provide the same stream for several clients ? Thanks, -- Samuel Alba

1 0

twisted.web.resource putChild method
by arun chhetri 21 Jul '08

21 Jul '08

Hi, I am new to twisted and just want to know a very simple thing Do we always have to use putChild method in __init__() of a Class or we can use it any where in the Class for example with in render function in which we do self.putChild Thanks

2 1

RE: CSS link to stylesheet does not work in twisted
by DJ 21 Jul '08

21 Jul '08

Hello Again, I am using twisted.web.http to prototype a few webpages and link to my stylesheet ( <link rel=stylesheet type="text/css" href="configstyle.css" />) does not work. If I save the page has a standalone HTML file and open it in a browser window, everything works fine, but not when I call it through twisted. Does anyone know why and is there a workaround ? -- Dafina A. Abernathy (DJ)

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Post binary files
by shad 21 Jul '08

21 Jul '08

Hello, I use python twisted web to do a simple web service that serves some streams. I process client requests in RequestHandler inherited from http.Request, exactly as described in most of examples. My webservice has to be able to receive file streams. For example, if I post a file at the uri /toto, a user can get this stream at the same uri. The stream has not to be bufferized, it's sent if someone reads it or not. When I read http.Request methods, I can see that POST data are stored in a simple dict. And in my case, the server will grow up in memory. So my question is: Is there an official way to handle streams in twisted.web or must I use twisted.web2 ? Thanks. -- Samuel Alba

1 0

Re: empty strings in request.args.items()
by DJ 12 Jul '08

12 Jul '08

Hello All, I am a twisted novice using the request.args.items() method to write the data from a form to a web page. The problem is that the list values are returned with extra empty strings. I have included a copy of the request string and the dictionary below: *Here is the request string:* request <GET /writeConfigFileChanges?keys=test&datefmt=mark&format=&retryinterva l=john&protocol=&adaptername=&path=&isadapter=&adaptertype=&keys=&retryinterval= &protocol=&adaptername=&path=&isadapter=&adaptertype=&formatter=&class=&args=&le vel=&keys=&level=&propagate=&qualname=&handlers=&level=nathan&handlers= HTTP/1.1> *Here are the values in request.args.items():* {'retryinterval': ['john', ''], 'datefmt': ['mark'], 'args': [''], 'protocol': [ '', ''], 'adaptername': ['', ''], 'keys': ['test', '', ''], 'format': [''], 'isa dapter': ['', ''], 'propagate': [''], 'handlers': ['', ''], 'path': ['', ''], 'f ormatter': [''], 'qualname': [''], 'class': [''], 'adaptertype': ['', ''], 'leve l': ['', '', 'nathan']} An extra single quote empty string is appended to some of the lists in the dictionary, those extra empty strings should not be there. (ex: retryinterval should be -> 'retryinterval': ['john'] ; but instead it is -> 'retryinterval': ['john', ''] ) Do you know of trick or a work around to correct this ? -- Dafina A. Abernathy (DJ)

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