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Caching custom ZClasses
by Bart Hubbard 04 Sep '03

04 Sep '03

Hello, I've created a set of custom ZClasses, and can't associate them with a cache manager. I see there isn't a baseclass available in the ZMI that corresponds to the 'Cacheable' class in 'cache.py' in the OFS directory of Zope. I suppose I could subclass another class that is cacheable, like DTML Document, but will that just cache the DTML Document portions of my class? I just want my ZClass to be cacheable, so ideas are welcome. much thanks, bart

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vice and wise
by Børge Kjeldstad 04 Sep '03

04 Sep '03

... maybe I used the wrong English word in my email called "Vice posting policy". The correct word is probaly "Wise". At least my intention here is good :) Børge

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Confusion about thread safety
by andre 03 Sep '03

03 Sep '03

Hi, after reading several things about thread safety, i'm a little bit confused by the fact that the words threads and connection are used in too various contexts. So i'll ask a simple question. With a basic Zope server, without any other DB, what happens when two different users want to commit changes made to the same object at the same time ? are the two requests, two different threads ? ZODB speaking.

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VS: A disappeared cookie..
by Børge Kjeldstad 03 Sep '03

03 Sep '03

Hello :) ..I try to send this message again, as I received no answer. Maybe it disappeared in the mess with the large virus attack some days ago. To personalize a website I use cookies. That is; when a person chooses a link, a cookie is set like this: <dtml-call expr="RESPONSE.setCookie('guest', 'C')"> Now, this cookie is used to either include or not include a table of contents on all of the following pages that I (or actually guest C) visits: <dtml-if expr="REQUEST.has_key('guest', 'C')"> <dtml-var site_map> </dtml-if> The <dtml-var site_map> looks like this: <a class="map" href="&dtml-URL0;?expand_all=1">Show all</a> <br> <a class="map" href="&dtml-URL0;?collapse_all=1">Hide all</a> <br> <dtml-tree expr="topics"> <a class="map" href="&dtml-absolute_url;"><dtml-var title_or_id></a> </dtml-tree> (topics is here the folder containing all the pages that guest C may visit) This works fine untill guest C presses some of the links generated by the <dtml-tree>. If he or she for instance presses the Page 1 link, he comes to page 1, but page 1 does not include the <dtml-var site_map> even though page 1 still has the same <dtml-if> statement: <dtml-if expr="REQUEST.has_key('guest', 'C')"> <dtml-var site_map> </dtml-if> It looks to me as if the cookie has disappeared. Or have I misunderstood the hole concept of the REQUEST object? What could be wrong? Thank you very much :) Børge Kjeldstad

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Sort problem
by Davis Mr MR 03 Sep '03

03 Sep '03

Hi, I'm trying to create a list of titles, sorted alphabetically, but want to sort ignoring initial stop words. I've set up an index for title_or_id, which works fine, but "The Resource" ends up listed under T. I've tried using a Lexicon, but these seem to only be able to be used for Text Fields, which can't be used in a sort. Is there another way to do this? Cheers Michael Davis

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Re: [Zope] Zope 2.7.0b1 on Windows
by Michael Long 03 Sep '03

03 Sep '03

Changing the startup batch file to use python.exe instead of pythonw.exe should do the trick -Mike > Chris McDonough wrote: > > > envvars). Neither works anymore. Installation is either via rpm, > > executable, or via "configure; make; make install". > > What's the equivalent of this for Windows? > > > instead there's a zopectl script under UNIX and the system works as a > > service under Windows. > > How do you run Zope NOT as a service on Windows? > > cheers, > > Chris > > > _______________________________________________ > Zope maillist - Zope(a)zope.org > http://mail.zope.org/mailman/listinfo/zope > ** No cross posts or HTML encoding! ** > (Related lists - > http://mail.zope.org/mailman/listinfo/zope-announce > http://mail.zope.org/mailman/listinfo/zope-dev ) > >

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RE: [Zope] Can't build resource file for PCGI on Zope 2.7b1
by Tiller, Michael (M.M.) 03 Sep '03

03 Sep '03

> From: Chris Withers [mailto:chrisw@nipltd.com] > Subject: Re: [Zope] Can't build resource file for PCGI on Zope 2.7b1 > > Tiller, Michael (M.M.) wrote: > > Why do I want to do it this way? Well, if I open a port on > localhost then any user of the server can access that port. > With the named pipe, I can control the permissions on the port. > > You have people other than sys admin logging into and using > the machine that's > the live webserver for your corporate intranet? > > And your corporate security guidlines don't say anything about that? > > That's pretty suprising... I think you are taking liberties with what I said. First, the server is not *THE* live webserver for Ford's corporate intranet, it is one among *many* and a rather minor one at that. If it were one of the main ones, there is no way they would let me run Zope one it (not an accepted "corporate standard"). In fact, the systems people here have been quite accommodating by even allowing me to run Zope. To answer your question, access to the machine *is* heavily restricted (I never indicated otherwise). That isn't the point. The point is that a (properly configured) named pipe *is* more secure than a port (even a localhost port) because the permissions can be controlled at the system level. So it seems reasonable (to me) for somebody to want to use a named pipe. In any case, I'm not looking to get into an argument about how well-reasoned our corporate security policies. I'm just trying to understand what the purported "more appropriate" alternatives are for PCGI. > Chris -- Mike

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No module named GenericUserFolder
by Andreas Tille 03 Sep '03

03 Sep '03

Hi, I wanted to follow the hint about customizing the cache of an ZSQL method given in the Zope Book at chapter Relational Databases. When I try to press the Advanced tab of a ZSQL method I get: Error Type: ImportError Error Value: No module named GenericUserFolder Regarding to http://www.zope.org/Members/Zen/GenericUserFolder it seems that this is a remainder from some previous code which should not really belong to Zope 2.6.1 which I'm using. Or is there any other problem? Kind regards Andreas.

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Charset HTTP header switched to UTF-8. Bug or feature ?
by Gilles Lenfant 03 Sep '03

03 Sep '03

Hi, There's a strange thing in a iso-8859-1 (natural) charset site Zope 2.6.1 powered... A form is summitted (POST) to a TTW python script. At the end of the script, after form validation ... <sample> return context.sometemplate(param1=value1, ...) </sample> The "sometemplate" is published with this HTTP header : Content-Type: text/html;charset=UTF-8 When nowhere in my scripts/templates, I stated to use that charset. You can imagine the ugly things that are displayed :-/ I found a workaround: forcing the HTTP header of the response... <sample> REQUEST.RESPONSE.setHeader('Content-Type', 'text/html; charset=iso-8859-1') return context.sometemplate(param1=value1, ...) </sample> Is this behavior a bug or a feature ? Note that with older versions of Zope (2.3.3) I didn't need to force the charset header like this. Thanks in advance --Gilles

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Problem with product security and setDefaultAccess()
by Jean-Francois.Doyon＠CCRS.NRCan.gc.ca 02 Sep '03

02 Sep '03

Hello, I've written a product that behaves much like a Database Adapter/Z SQL Method type combination, only it queries a web service, parses the XML, and returns the results. Most things seem to be working OK, only now I'm having trouble accessing the results through PythonScripts (i.e. restricted TTW code). (Thought the ZMI DTML works ok without complaining) The results are stored in a ResultSet class, which has as attribute a list of objects which are instances of the Result class (i.e. Records) ... This result class provides methods that I keep getting denied access to, no matter what I try. The ResultSet and Result classes do not subclass anything, they're real dumb, and non-persistent. I'm trying to access the gettypename() method, but I always get an access denied. I installed VerboseSecurity and it keep insisting that: The container has no security assertions. Access to 'gettypename' of (Products.Atlas.WFSResults.WFSResult instance at 0x8af92fc) denied. Which so far as I can tell isn't true, since the WFSResultSet DOES have a setDefaultAccess("allow") on it, which in this case should be perfectly safe, or at least good enough for testing. I've tried adding security assertions all over the place, including in the WFSResult class itself, on the method itself, etc ... without any change in the errors. I've tried declaring public, using specific permissions, etc ... I'm out of ideas ... help ? from xml.parsers.expat import ParserCreate from AccessControl import ClassSecurityInfo class WFSResultSet: ClassSecurityInfo().setDefaultAccess("allow") def __init__(self, getfeaturexml, typenames, typeinfo): class WFSResult: def __init__(self, typename, resultset): self.typename = typename self.resultset = resultset def gettypename(self): return self.typename # Define the expat parsing callback functions <snip> parser.Parse(getfeaturexml) resultsasinstances = [] for item in results: resultsasinstances.append( WFSResult( item[0], item[1] ) ) self.results = resultsasinstances def __getitem__(self, index): return self.results[index] Thanks, Jean-François Doyon Internet Service Development and Systems Support GeoAccess Division Canadian Center for Remote Sensing Natural Resources Canada http://atlas.gc.ca Phone: (613) 992-4902 Fax: (613) 947-2410

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