Twisted-web December 2004

twisted-web@python.org

26 participants
28 discussions

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Test
by Philippe Lafoucrière 05 Aug '21

05 Aug '21

Hi all just a test

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How to get rid of web logs?
by Yun Mao 05 Jan '05

05 Jan '05

Right now I'm using the log for debugging, and I don't wan to log those info like below. How should I achieve this? Thanks! 2004/09/30 13:31 Eastern Daylight Time [HTTPChannel,1,127.0.0.1] 127.0.0.1 - - [ 30/Sep/2004:17:31:56 +0000] "GET /?view=all HTTP/1.1" 200 2767 "http://localhost :1083/" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20040803 Firefox/0.9.3" Yun

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adbapi/Nevow Question
by Ed Suominen 29 Dec '04

29 Dec '04

Using twisted.enterprise.adbapi and Nevow, I am rendering a big table of entries from one SQL table, each of which has table cells that can contain multiple entries from another SQL table. I have some stan code working for the top-level entries with a top-level render=directive("sequence"), but am wondering how to go about rendering the table-within-a-cell for the second-level entries. Can sequence directives be nested, or would I have to manually run the second-level SQL queries in some sort of fire-and-wait-for-the-deferred iteration from within the render_ method of the top-level sequence? The latter sounds like it would be very difficult to keep from blocking. Thanks for any help. I am finding Nevow to be fascinating and powerful, but very difficult to understand and use. -Ed Suominen

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Patch to nevow for deferrable beforeRender and afterRender
by J Turner 28 Dec '04

28 Dec '04

I'm attaching a patch to the current svn trunk that allows beforeRender and afterRender to return a Deferred. It's been tested, and I've scanned it past dp a few times. - jamwt

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How to pass invisible values with annotate.TypedInterface
by Michael Wilson 25 Dec '04

25 Dec '04

My forms are modeled after the examples in examples/customform.py, and I try and use this standard form definition in multiple places. In some cases, I would like to pass an invisible value with the form. I know of two ways to do this: 1. By adding arguments to the form URL ( action="./freeform_post!!doSomething?myarg1=...") 2. By adding invisible fields to the form. What's the best way to do this? P.S. I've looked at the examples and the code, can't find the answer. Thanks!

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Re: [Nevow-commits] r1003 - Don't call getInterfaces over and over and over again
by James Y Knight 24 Dec '04

24 Dec '04

On Dec 24, 2004, at 5:46 PM, Donovan Preston wrote: > Modified: > branches/dp/optimizations/nevow/flat/ten.py > Log: > Don't call getInterfaces over and over and over again I'm pretty sure zope interfaces already caches this operation, so doing a double cache may actually be detrimental. But, measurements, I guess... > Modified: > branches/dp/optimizations/nevow/flat/flatstan.py > Log: > Optimize out some function calls (from property accesses) Why does it need a _specials dict anyways? What's wrong with just using the instance dict for those? James

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RE: [Twisted-web] Installing on Fedora
by Robert Ide 23 Dec '04

23 Dec '04

Here is the error from running python setup.py install running install Traceback (most recent call last): File "setup.py", line 358, in ? setup(**setup_args) File "/usr/lib/python2.2/distutils/core.py", line 138, in setup dist.run_commands() File "/usr/lib/python2.2/distutils/dist.py", line 902, in run_commands self.run_command(cmd) File "/usr/lib/python2.2/distutils/dist.py", line 921, in run_command cmd_obj.ensure_finalized() File "/usr/lib/python2.2/distutils/cmd.py", line 112, in ensure_finalized self.finalize_options() File "/usr/lib/python2.2/distutils/command/install.py", line 267, in finalize_options (prefix, exec_prefix) = get_config_vars('prefix', 'exec_prefix') File "/usr/lib/python2.2/distutils/sysconfig.py", line 417, in get_config_vars func() File "/usr/lib/python2.2/distutils/sysconfig.py", line 322, in _init_posix raise DistutilsPlatformError(my_msg) distutils.errors.DistutilsPlatformError: invalid Python installation: unable to open /usr/lib/python2.2/config/Makefile (No such file or directory) -----Original Message----- From: twisted-web-bounces(a)twistedmatrix.com [mailto:twisted-web-bounces@twistedmatrix.com] On Behalf Of Mary Gardiner Sent: Wednesday, December 22, 2004 8:51 PM To: twisted-web(a)twistedmatrix.com Subject: Re: [Twisted-web] Installing on Fedora On Wed, Dec 22, 2004, Robert Ide wrote: > I am trying to install Twisted Moving discussion to twisted-python -Mary _______________________________________________ Twisted-web mailing list Twisted-web(a)twistedmatrix.com http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-web

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RE: [Twisted-web] Installing on Fedora
by Robert Ide 22 Dec '04

22 Dec '04

I am trying to install Twisted I downloaded from the twisted site I got errors and when I try to run twistd --version I get "not found" Rob -----Original Message----- From: twisted-web-bounces(a)twistedmatrix.com [mailto:twisted-web-bounces@twistedmatrix.com] On Behalf Of Mary Gardiner Sent: Wednesday, December 22, 2004 7:42 PM To: twisted-web(a)twistedmatrix.com Subject: Re: [Twisted-web] Installing on Fedora On Wed, Dec 22, 2004, Robert Ide wrote: > This may be a rooky question but I'm having some trouble installing on > Fedora. I ran python setup.py install but that didn't seem to work and when I > look at admin/twisted.spec I'm not sure what to do with it. Should I be using > rpm with this? A few questions: 1. What are you trying to install exactly (twisted, Nevow...)? 2. Where did you download it from? 3. What tells you that "python setup.py install" didn't work (error messages, failure of the program to show up in the right place)? If it's twisted you're trying to install, twisted-python(a)twistedmatrix.com might be of some help... -Mary _______________________________________________ Twisted-web mailing list Twisted-web(a)twistedmatrix.com http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-web

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Installing on Fedora
by Robert Ide 22 Dec '04

22 Dec '04

This may be a rooky question but I'm having some trouble installing on Fedora. I ran python setup.py install but that didn't seem to work and when I look at admin/twisted.spec I'm not sure what to do with it. Should I be using rpm with this? Rob

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Re: [Nevow-commits] r962 - One billion times better Choice...
by Alex Levy 21 Dec '04

21 Dec '04

I'm a little behind on Nevow changes, and I just came across this change to the Choice interface. It looks cool (deferred support is a big plus), but so far all the examples I've seen involve declaring the available choices as part of the interface definition, e.g.: class MyInterface(TypedInterface): pickOne = Choice(lambda c,d: [1,2,3,4]) What I do (fairly regularly) with my application involves declaring the available choices as part of the _implementing_ class, not as part of the interface. I typically used choicesAttribute to do this, and was working on something along the lines of a choicesMethod, but now it seems that this behavior has been deprecated. So, what is the new recommended syntax for a Choice where the implementing class can change the choices dynamically? On Thu, Dec 16, 2004 at 01:49:29PM -0500, Donovan Preston wrote: > MIME-Version: 1.0 > Content-Type: text/plain; charset=UTF-8 > > Author: dp > Date: Thu Dec 16 13:49:28 2004 > New Revision: 962 > > Modified: > trunk/examples/formbuilder.py > trunk/examples/formpost2.py > trunk/formless/annotate.py > trunk/formless/webform.py > Log: > One billion times better Choice implementation; supports lazy choices from a function, a deferred, etc. Has valueToKey and keyToValue methods which are used to serialize/unserialize the choice instead of the index into the list. > > > Modified: trunk/examples/formbuilder.py > ============================================================================== > --- trunk/examples/formbuilder.py (original) > +++ trunk/examples/formbuilder.py Thu Dec 16 13:49:28 2004 > @@ -10,6 +10,9 @@ > from formless import webform > from formless import configurable > > +from twisted.python import reflect > + > + > class BuilderCore(configurable.Configurable): > def __init__(self): > configurable.Configurable.__init__(self, None) > @@ -32,10 +35,11 @@ > > > allTypes = [annotate.String, annotate.Text, annotate.Integer, annotate.Real, annotate.Password] > +typeChoice = annotate.Choice(choices=allTypes, valueToKey=reflect.qual, keyToValue=reflect.namedAny, stringify=lambda x: x.__name__) > > > class IFormBuilder(annotate.TypedInterface): > - def addElement(self, name=annotate.String(required=True), type=annotate.Choice(choices=allTypes)): > + def addElement(self, name=annotate.String(required=True), type=typeChoice): > """Add Element > > Add an element to this form. > > Modified: trunk/examples/formpost2.py > ============================================================================== > --- trunk/examples/formpost2.py (original) > +++ trunk/examples/formpost2.py Thu Dec 16 13:49:28 2004 > @@ -3,15 +3,24 @@ > from nevow import loaders > from nevow import rend > from nevow import tags > +from nevow import inevow > > from formless import annotate > from formless import webform > > +from twisted.internet import defer > + > + > +oldChoicesWay = annotate.Choice(choicesAttribute='theChoices') # Doing this gives you a DeprecationWarning now > +# If you still want to use an attribute or method of some other object, you should use a function as shown below, > +# but look up IResource(ctx) or IConfigurable(ctx), whichever is more appropriate. > +newChoicesWay = annotate.Choice(lambda c, d: range(30)) > +deferChoicesWay = annotate.Choice(lambda c, d: defer.succeed(['abcd', 'efgh', 'ijkl'])) > > class IMyForm(annotate.TypedInterface): > foo = annotate.Integer() > > - def bar(self, baz=annotate.Integer()): > + def bar(self, baz=annotate.Integer(), bamf=oldChoicesWay, slam=newChoicesWay, ham=deferChoicesWay): > pass > bar = annotate.autocallable(bar) > > @@ -21,8 +30,10 @@ > > foo = 5 > > - def bar(self, baz): > - print "baz!", baz > + def bar(self, baz, bamf, slam, ham): > + return "You called bar! %s %s %s %s" % (baz, bamf, slam, ham) > + > + theChoices = [1, 2, 3] > > > class FormPage(rend.Page): > @@ -31,12 +42,19 @@ > > child_webform_css = webform.defaultCSS > > + def render_hand(self, ctx, data): > + hand = inevow.IHand(ctx, default=None) > + if hand is not None: > + return ctx.tag[hand] > + return '' > + > docFactory = loaders.stan( > tags.html[ > tags.head[ > tags.link(rel='stylesheet', type='text/css', href='/webform_css'), > ], > tags.body[ > + tags.h3(render=render_hand, style="color: red; font-size: xx-large"), > "Hello! Here is a form:", > > # We want to render forms defined by the Implementation instance. > > Modified: trunk/formless/annotate.py > ============================================================================== > --- trunk/formless/annotate.py (original) > +++ trunk/formless/annotate.py Thu Dec 16 13:49:28 2004 > @@ -10,6 +10,7 @@ > import copy > import inspect > import types > +import warnings > > from nevow import inevow > from nevow import util > @@ -238,28 +239,29 @@ > are configuring. The elements of the list will be rendered by calling the > function passed to stringify, which is by default "str". > """ > - def __init__(self, choices=None, choicesAttribute=None, stringify=str, *args, **kw): > + def __init__(self, choices=None, choicesAttribute=None, stringify=str, valueToKey=str, keyToValue=str, *args, **kw): > Typed.__init__(self, *args, **kw) > - if choices is None: > - self.choices = [] > - else: > - self.choices = choices > - self.choicesAttribute = choicesAttribute > + self.choices = choices > + if choicesAttribute: > + self.choicesAttribute = choicesAttribute > + if getattr(self, 'choicesAttribute', None): > + warnings.warn( > + "Choice.choicesAttribute is deprecated. Please pass a function to choices instead.", > + DeprecationWarning, > + stacklevel=2) > + def findTheChoices(ctx, data): > + return getattr(iformless.IConfigurable(ctx).original, self.choicesAttribute) > + self.choices = findTheChoices > + > self.stringify = stringify > + self.valueToKey=valueToKey > + self.keyToValue=keyToValue > > def coerce(self, val, binding): > """Coerce a value with the help of an object, which is the object > we are configuring. > """ > - try: > - val = int(val) > - except ValueError: > - raise InputError("%r is an invalid choice." % val) > - if self.choicesAttribute is not None: > - choices = getattr(binding, self.choicesAttribute) > - else: > - choices = self.choices > - return choices[val] > + return self.keyToValue(val) > > > class Any(object): > > Modified: trunk/formless/webform.py > ============================================================================== > --- trunk/formless/webform.py (original) > +++ trunk/formless/webform.py Thu Dec 16 13:49:28 2004 > @@ -62,6 +62,7 @@ > def rend(self, context, data): > defaults = context.locate(iformless.IFormDefaults) > value = defaults.getDefault(context.key, context) > + context.remember(data.typedValue, iformless.ITyped) > > if data.typedValue.getAttribute('immutable'): > inp = span(id=keyToXMLID(context.key))[value] > @@ -145,32 +146,45 @@ > _class='freeform-input-file')] > > > +class ICurrentlySelectedValue(compy.Interface): > + """The currently-selected-value for the ITypedRenderer being rendered. > + """ > + > + > +csv = ICurrentlySelectedValue > +def valToKey(c, d): > + return iformless.ITyped(c).valueToKey(d) > + > + > +def isSelected(c, d): > + if csv(c) == valToKey(c, d): > + return c.tag(selected='selected') > + return c.tag > + > + > +default_select = select(id=slot('id'), name=slot('name'), render=directive('sequence'), foo="bar")[ > + option(pattern="item", > + value=valToKey, > + render=isSelected)[ > + lambda c, d: iformless.ITyped(c).stringify(d)]] > + > + > class ChoiceRenderer(BaseInputRenderer): > def input(self, context, slot, data, name, value): > tv = data.typedValue > - if tv.choicesAttribute: > - choices = getattr(context.locate(iformless.IConfigurable).boundTo, tv.choicesAttribute) > - else: > - choices = tv.choices > + choices = tv.choices > > - numChoices = len(choices) > - if numChoices == 0: > - return None > + if value: > + context.remember(self.original.valueToKey(value), csv) > + else: > + context.remember('', csv) > > try: > selector = context.tag.patternGenerator( 'selector' ) > except NodeNotFound: > - selector = select > - > - selector = selector(id=keyToXMLID(context.key), name=name) > - stringify = tv.stringify > + selector = default_select > > - for index, val in enumerate(choices): > - if val == value: > - selector[option(value=str(index), selected="selected")[stringify(val)]] > - else: > - selector[option(value=str(index))[stringify(val)]] > - return slot[selector] > + return selector(data=choices) > > > class ObjectRenderer(compy.Adapter): > @@ -259,6 +273,7 @@ > class PropertyBindingRenderer(BaseBindingRenderer): > def rend(self, context, data): > context.remember(data, iformless.IBinding) > + context.remember(data.typedValue, iformless.ITyped) > typedRenderer = iformless.ITypedRenderer(data.typedValue, defaultBindingRenderer, persist=False) > if typedRenderer.complexType: > return invisible(data=data, render=typedRenderer) > @@ -337,11 +352,13 @@ > except NodeNotFound: > default_content_pattern = freeformDefaultContentPattern > content_pattern = default_content_pattern > + renderer = iformless.ITypedRenderer( > + argument.typedValue, defaultBindingRenderer, persist=False) > pat = content_pattern( > key=argument.name, > data=argument, > - render= iformless.ITypedRenderer( > - argument.typedValue, defaultBindingRenderer, persist=False)) > + render=renderer, > + remember={iformless.ITyped: argument.typedValue}) > context.fillSlots( 'argument!!%s' % argument.name, pat ) > yield pat > > > _______________________________________________ > Nevow-commits mailing list > Nevow-commits(a)divmod.org > http://divmod.org/users/mailman.twistd/listinfo/nevow-commits -- Alex Levy WWW: http://mesozoic.geecs.org/ "Never let your sense of morals prevent you from doing what is right." -- Salvor Hardin, Isaac Asimov's _Foundation_

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Twisted-web December 2004