Mailman 3 February 2005 - Twisted-web

Test
by Philippe Lafoucrière Aug. 5, 2021

Aug. 5, 2021

Hi all just a test

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Re: [Twisted-web] pgasync (was: /freeform_post!!random causes exceptions)
by J Turner March 17, 2005

March 17, 2005

Andrea, Thanks for your suggestions; sorry I've taken so long to get back to them, but I haven't had time to work on pgasync until now... On Thu, Jan 20, 2005 at 02:15:36AM +0100, Andrea Arcangeli wrote: > Next thing I had to fix to be able to login has been to add this: [snip bool patch] I've patched that in, thanks. > With the above a good part of my app started working. But it's not enough. > > Here a list of the remaining issues (which I believe aren't related anymore to > the API, as far as I'm concerned the current adbapi wrapper is all I need ;). > > 1) the '%(xx)d' format for integeres/logs insn't recognized. I'd like to use > "%(xx)d" to be strict for integers. This is fixed. > btw, is there any difference in python between %u and %d at all? Nope, I don't think so. > 2) it cannot handle a ";" at the end of the sql string. so I deleted all the > finals ";" and I left only the intermediate ones. This is fixed as well. > 3) it doesn't print the nevow url type, note that such parameter is just > incidentally passed down to the sql query, and pgasync should ignore it > instead of complaining since it never gets resolved It's not trival to determine whether or not something gets resolved. If it's a keyword argument situation, then I need to search the format string for some variation of %(keyword)s. If it's just tuple-style, then I need to count the number of %s/d/whatevers and determine whether or not it's beyond the limit. This seems ugly, and needlessly expensive for a corner case; I think the right answer is, only pass things to format() that are intended to be formatted and made safe for insertion into SQL. But, then again, maybe I'm misunderstanding you. - Jamie

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liveevil problem: nested functions get lost
by Federico Di Gregorio March 1, 2005

March 1, 2005

Hi all, I don't know if this is a known problem or the way it is supposed to work but the following code results in a "lost" liveevil handler: class Blah(rend.Page): def render_blah(self, ctx, data): def do_something(client): client.alert("You will never see this message!") return ctx.tag.clear()[T.span( onclick=liveevil.handler(do_something))["Click me"]] The do_something is not recognized as a closure (actually it is not :) so its "path" is saved away as module.do_something and does not get resolved at call time. I know about the identifier keyword something about it should probably be added to the docs. Maybe is would be even better (and safer) to remove the reflect part and use only the events. federico

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patch to guard
by Simon Feb. 28, 2005

Feb. 28, 2005

Posted a patch [1] to the Nevow tracker regarding guard.SessionWrapper. I leave to those with better knowledge of this to decide if it's good enough for a commit. The need for the patch comes from that I want to be able to differentiate between incorrect logins and logins denied due to, for example, too many failed attempts. The patch modifies SessionWrapper.ebLoginError to trap LoginFailed instead of UnauthorizedLogin and therefor catches all the subclasses of LoginFailed (including UnauthorizedLogin and LoginDenied). The patch also let's you decide the message that will be appended to the login-failure argument of the URL by taking the text representation of the failure. [1] http://divmod.org/users/roundup.twistd/nevow/issue166 /Simon

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livepage url confused
by noema Feb. 28, 2005

Feb. 28, 2005

In my livepage code the url tree seems to be confused url.root ... returns the current path while url.root.child('some child') .... throws me an error When I looked at url.py I noticed that one may call rememberRootURL() on the rootpage to remember the correct root...doing something like this failed though: req = context.locate(inevow.IRequest) req.rememberRootURL() How and where would I remember the correct root url? #noema

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Nevow documentation style and other bugs
by Alexey Shamrin Feb. 27, 2005

Feb. 27, 2005

Hello! 1. I have attached the patch to issue 159 [1]. It fixes the style of the documentation in nevow-traversal.txt. Please take a look at it and report if the patch is acceptable. I can make similar patches to the rest of the documentation. 2. Then, I have found minor bug in nevow.url module. It is described in issue 165 [2]. Patch included. 3. There is still a bug in the Directory example in nevow-traversal.txt. Take a look at issue 158 [3]. I have made a patch, but I am not sure if it is okay. Thank you! [1] http://divmod.org/users/roundup.twistd/nevow/issue159 [2] http://divmod.org/users/roundup.twistd/nevow/issue165 [3] http://divmod.org/users/roundup.twistd/nevow/issue158 -- Best regards, Alexey.

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Nevow URL trouble
by Sridhar Ratna Feb. 27, 2005

Feb. 27, 2005

I am rewriting wsgi.py in nevow. I face some problems with the nevow url module. Firstly, only guard and rootaccessor uses IRequest.getRootURL() In twisted the root url is always like http://domain.com/ . In non-twisted setups like wsgi, it is not so. And well, nevow is designed to work with cgi apps too (nevow-deployment.txt) Consider this cgi/wsgi/nevow setup: http://example.com/cgi-bin/nevowcgi.py/a/b/c nevowcgi.py will createWSGIApplication and call run_with_cgi. The wsgi.py module will then use the PATH_INFO environment variable for request URI (IRequest.uri). Thus in the above example, IRequest.uri is '/a/b/c'. wsgi.py in addition sets the appRootURL to 'http://example.com/cgi-bin/nevowcgi.py/' which is passed from nevowcgi.py Lot of code in nevow doesn't use the appRootURL. For example if PageC.addSlash is True, the above url will be redirected to http://example.com/a/b/c/ and not http://example.com/cgi-bin/nevowcgi.py/a/b/c/ as expected (not the leading slash) Because of this reason, I couldn't get wsgi.py work fully. To fix some problems (excluding the redirect problem) WSGIRequest.prePathURL will return the full URL prefixed with appRootURL (which is not the case with twisted.web.server.Request.prePathURL -- Sridhar Ratna - http://srid.bsdnerds.org

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Problem using 'immutable' attribute in form field.
by Dave Cook Feb. 27, 2005

Feb. 27, 2005

I'd like to use an immutable field for a database row ID: class IMyForm(annotate.TypedInterface): def recording(self, request=annotate.Request(), recording_id=annotate.Integer(label='Recording ID', immutable=True, default=999 ), ... ): pass recording = annotate.autocallable(recording, action='Save') ... Then in my page this is implemented with: def recording(self, request, **kw): # do stuff with kw However, if I use 'immutable', kw['recording_id'] is always None. If I remove the immutable attribute it works fine, but I don't want the user editing the row ID.

1 0

nevow: rend.htmlfile not found
by Amit Upadhyay Feb. 25, 2005

Feb. 25, 2005

Hello all, I recently started exploring twisted.web, and there I got suggestion for using woven/nevow. I downloaded 0.3.0 from nevow.com, and examples from http://nevow.com/Nevow2004Tutorial.html. loc Example4]$ twistd -noy sched.tac 2005/02/25 07:14 CST [-] Log opened. 2005/02/25 07:14 CST [-] twistd 1.3.0rc1 (/usr/bin/python 2.3.4) starting up 2005/02/25 07:14 CST [-] reactor class: twisted.internet.default.SelectReactor 2005/02/25 07:14 CST [-] Loading sched.tac... 2005/02/25 07:14 CST [-] Traceback (most recent call last): 2005/02/25 07:14 CST [-] File "/usr/lib/python2.3/site-packages/twisted/application/app.py", line 118, in getApplication 2005/02/25 07:14 CST [-] application = service.loadApplication(filename, style, passphrase) 2005/02/25 07:14 CST [-] File "/usr/lib/python2.3/site-packages/twisted/application/service.py", line 319, in loadApplication 2005/02/25 07:14 CST [-] application = sob.loadValueFromFile(filename, 'application', passphrase) 2005/02/25 07:14 CST [-] File "/usr/lib/python2.3/site-packages/twisted/persisted/sob.py", line 213, in loadValueFromFile 2005/02/25 07:14 CST [-] exec data in d, d 2005/02/25 07:14 CST [-] File "<string>", line 5, in ? 2005/02/25 07:14 CST [-] File "./schedule.py", line 12, in ? 2005/02/25 07:14 CST [-] class ScheduleRoot(rend.Page): 2005/02/25 07:14 CST [-] File "./schedule.py", line 13, in ScheduleRoot 2005/02/25 07:14 CST [-] docFactory = rend.htmlfile('Month.html') 2005/02/25 07:14 CST [-] AttributeError: 'module' object has no attribute 'htmlfile' 2005/02/25 07:14 CST [-] Failed to load application: 'module' object has no attribute 'htmlfile' 2005/02/25 07:14 CST [-] Traceback (most recent call last): File "/usr/bin/twistd", line 36, in ? run() File "/usr/lib/python2.3/site-packages/twisted/scripts/twistd.py", line 184, in run app.run(runApp, ServerOptions) File "/usr/lib/python2.3/site-packages/twisted/application/app.py", line 205, in run runApp(config) File "/usr/lib/python2.3/site-packages/twisted/scripts/twistd.py", line 174, in runApp application = app.getApplication(config, passphrase) --- <exception caught here> --- File "/usr/lib/python2.3/site-packages/twisted/application/app.py", line 118, in getApplication application = service.loadApplication(filename, style, passphrase) File "/usr/lib/python2.3/site-packages/twisted/application/service.py", line 319, in loadApplication application = sob.loadValueFromFile(filename, 'application', passphrase) File "/usr/lib/python2.3/site-packages/twisted/persisted/sob.py", line 213, in loadValueFromFile exec data in d, d File "<string>", line 5, in ? File "./schedule.py", line 12, in ? class ScheduleRoot(rend.Page): File "./schedule.py", line 13, in ScheduleRoot docFactory = rend.htmlfile('Month.html') exceptions.AttributeError: 'module' object has no attribute 'htmlfile' Failed to load application: 'module' object has no attribute 'htmlfile' 2005/02/25 07:14 CST [-] ----------------------------------------------------------------------------------------- And it seems there is no htmlfile member in nevow.rend. loc Example4]$ python Python 2.3.4 (#1, Oct 26 2004, 16:42:40) [GCC 3.4.2 20041017 (Red Hat 3.4.2-6.fc3)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> from nevow import rend >>> dir(rend) ['ChildLookupMixin', 'ConfigurableFactory', 'DataFactory', 'FourOhFour', 'Fragment', 'FreeformChildMixin', 'LiveEvilChildMixin', 'NodeNotFound', 'NotFound', 'Page', 'PageContext', 'RenderFactory', 'RequestContext', 'StringIO', 'WovenContext', '_CARRYOVER', '__builtins__', '__doc__', '__file__', '__name__', 'compy', 'defaultsFactory', 'errorsFactory', 'flat', 'formless', 'handFactory', 'iformless', 'inevow', 'log', 'mapping', 'now', 'originalFactory', 'os', 'sequence', 'statusFactory', 'tags', 'traceback', 'urllib', 'util', 'warnings'] >>> What am I doing wrong? How do I get the example running? TIA, -- Amit Upadhyay Blog: http://www.rootshell.be/~upadhyay +91-9820-859-701

3 4

when formless is useless (II)
by Federico Di Gregorio Feb. 25, 2005

Feb. 25, 2005

Please, forget about my previous mail. I found a way to do what I was looking for. I just need to use *both* a template and a slot for every "argument!!foo". Sorry for having increased the noise-to-signal ratio. (Maybe documenting this somewhere would be nice..) federico -- Federico Di Gregorio http://people.initd.org/fog Debian GNU/Linux Developer fog(a)debian.org INIT.D Developer fog(a)initd.org Se si insegna a un bambino a programmare in qualche linguaggio informatico, questo esercizio logico lo renderà padrone e non schiavo del computer. -- Umberto Eco

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