December 2002 - Zope

Sudden ZOPE Error and Failure
by Deb B. 30 Dec '02

30 Dec '02

Please help. I haven't installed anything new today on my ZOPE server (no products, no new objects/code, etc.) and only had to shut the server down a few times due to another program's processes taking over the machine. This has happened in the past but never without any impact on ZOPE. Now, when I start the server and try to log in to the http://intranet:8080/manage pages, I get the following error and ultimate failure: <--there is a line(s) here that I cannot read in the DOS window but it ends starting here--> obj.handle_error() File "D:\IntranetSite\ZServer\medusa\http_server.py", line 437, in handle_error asynchat.async_chat.handle_error (self) File "D:\IntranetSite\ZServer\medussa\asyncore.py", line 421, in handle_error self.close() File "D:\IntranetSite\ZServer\HTTPServer.py", line 293, in close p.more() # free up resources held by producer File "D:\IntranetSite\ZServer\Producers.py", line 36, in more getattr(self.logger, self.method)(self.bytes) File "D:\IntranetSite\ZServer\medusa\http_server.py", line 289, in log ' - %s [%s] "%s" %d %d "%s" "%s"\n' % ( File "D:\IntranetSite\ZServer\medusa\logger.py", line 247, in log self.logger.log ('%s%s' % (ip, message)) File "D:\IntranetSite\ZServer\medusa\logger.py", line 77, in log self.write (message) File "D:\IntranetSite\ZServer\medusa\logger.py", line 53, in write self.maybe_flush() File "D:\IntranetSite\ZServer\medusa\logger.py", line 65, in maybe_flush self.file.flush() IOError: [Errno 91] Bad file descriptor D:\IntranetSite> and my ZOPE is dead! Now, I'm not a programmer. I'm just a solo IT person trying to maintain a moderately sized intranet within a small company. I have no idea how to recover from this error so that I get access to my ZOPE site again. Someone please help! --------------------------------- Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now

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using _p_resolveConflict on Folderish object
by Willem Broekema 30 Dec '02

30 Dec '02

Hi all - I'm trying to resolve ConflictErrors in my Product. It might be relevant that the product is derived from 'Folder'. I created a '_p_resolveConflict' function that prints the three state parameters, 'old', 'saved' and 'new'. I was surprised to see that the printed representation of the three states was identical: the data inside 'PR(...) was the same for every subobject. Also, 'oldstate == savedstate' was true, but not 'oldState == newState' or 'oldState is savedState'. I would like to know what's going on here. For example, if 'oldState == newState', can I safely assume that newState is correct and there's no need to merge changes (which changes?) between oldState and savedState? Now follows the printed state, in case that may help explaining this. The 'Feed' insances in the folder are named feed_###. state == { 'feed_view__doc__': 'dummy', '__ac_local_roles__': {'wilm': ['Owner']}, 'index_html__doc__': 'dummy', '_owner': (['acl_users'], 'wilm'), 'cookie_name': 'DF_cat_skin', 'title': '', 'id': 'cat', 'nav_frame__doc__': 'dummy', 'feed_902912': PR(164726636 ('\x00\x00\x00\x00\x00\x00\r\x0e', ('Products.DogFeed.DFFeed', 'Feed'))), 'feed_070984': PR(164727028 ('\x00\x00\x00\x00\x00\x00\r\x0f', ('Products.DogFeed.DFFeed', 'Feed'))), [...] '_objects': ( {'meta_type': 'DogFeed RSS Feed', 'id': 'feed_902912'}, {'meta_type': 'DogFeed RSS Feed', 'id': 'feed_070984'}, [...] ) } Thanks. - Willem

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Packing date screwed up
by Cliff Quinn 30 Dec '02

30 Dec '02

I can't pack my database because at some point, with the machine time set at 2008 (don't ask) it was packed. How can I force this, or change the database date. I tried using the fsrecover, which tells me the dates are out of sequence, but doesn't do anything about it. I found a similar problem in the list archives, but no answer to it. >Error Type: FileStorageError >Error Value: The database has already been packed to a later time or no changes have been made since the last pack (Zope 2.6.0 (binary release, python 2.1, win32-x86), python 2.1.3, win32) running on WIN98 (please don't laugh). Thanks! ============================================ fishAbility: Cliff Quinn and Sam Quinn Victoria, BC, Canada (250) 727-7879 http://www.fishAbility.biz/

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Idiom for accessing restricted capabilities
by Andrew Athan 29 Dec '02

29 Dec '02

Say you have a site which must perform certain restricted activites, but those activities should be invokable by anonymous users IF AND ONLY IF the users initiate them from an authorized source (e.g., a specific DTML or ZPT script)...what is the recommended way of setting this up? Example: Site X allows anonymous users to purchase an item. The purchase() method is defined to be accessible only by a specific trusted/authenticated user. The purchase() method should not be invokable by the anonymous user, but if the anonymous user access the checkout page template, that page template should be able to invoke purchase(). Now, say I want to invoke purchase() from an ExternalMethod that is called from an anonymous context, what's the preferred way of setting and supplying the appropriate credentials? I have solved these problems "my way," think the solution is hairy and dirty, and would therefore like to see what people's recommended solutions are. A.

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objectValues not working below root
by huzza boo 29 Dec '02

29 Dec '02

Greetings, all. I'm a newcomer to Zope, having just installed 2.6.0 on Linux, and working through several of the examples. I do have years of experience on other platforms, however. I am attempting to put together a rather quick and simple document repository for my development team. Here's my issue, forgive me, I suspect it's a newbie one, but I could not find an answer after 25 minutes of searching. I've created a test folder below the root, and within it placed two more folders. I'm simply trying to get the subfolders to display in my index_html document in my first test root folder. I'm using: < ul> < dtml-in expr="objectValues('Folder')"> < li>< dtml-var title_or_id> < /dtml-in> < /ul> ...and getting nothing but empty ul tags. If I try this at the absolute root, it works. In any sub folder, it does not. I've created no acl_users below root, and I'm working as Admin, so I don't think this is a privileges problem. This has got to be something simple that I'm just not seeing. Any help is appreciated. Martin __________________________________________________ Do you Yahoo!? New DSL Internet Access from SBC & Yahoo! http://sbc.yahoo.com

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Re: Can't connect to Zope after initial install...
by Malcolm Webb 28 Dec '02

28 Dec '02

Adam Manock's advice to check my ipchains worked. Thanks! --- Malcolm Webb <mawebb(a)rocketmail.com> wrote: > I just installed Zope onto the following config: > > -Redhat 7.1.2 > -gcc 2.96 > -python 2.1.3 > > My box is currently running Apache, and hosts 11 web sites (virtual > hosts). The box has two ethernet cards and two static IPs. > > It appears as though everything has installed correctly (no errors). > I've created a "zope" user and chmod'ed all the files in the zope > directory. > > When I run the "start" script, it says that the Zserver has been > started and is listening on port 8080. But then when I try to connect > using a standard web browser, I get a "connection refused" error. > > This happens even if I turn off Apache. > > According to "netstat", something is listening on port 8080. > > But nothing is being written to the log file, and I can't connect. > > Can anyone offer some advice? > > __________________________________________________ > Do you Yahoo!? > Yahoo! Mail Plus - Powerful. Affordable. Sign up now. > http://mailplus.yahoo.com > __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com

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Change current path in External Method
by Klimovich Alexander 28 Dec '02

28 Dec '02

Hi there! Can anyone tell me how to change system current folder using python methods? E.g. 'os.getcwd()' returns current folder, I need function like 'os.setcwd(path)'? Are there any ways to do it ? Sincerely yours, Alexander Y. Klimovich

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dtml syntax help
by Sean Kelley 27 Dec '02

27 Dec '02

Hi I need help with dtml syntax... I have the following line before a dtml-in on a catalog: <dtml-call "REQUEST.set('Verified','on')"> I want to be able to list only items where Verified is not set to 'on' The default value of verified is no value at all. If I say: <dtml-call "REQUEST.set('Verified','')"> (empty value) I get everything. How does one say Verified = to NOT 'on' in dtml?

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Newbie SIte Map Question
by Philip Kilner 27 Dec '02

27 Dec '02

Hi All, I'm trying to get a site map working as described by MWR at : - http://www.zope.org/Members/mwr/python_zpt_sitemap_zen I'm not having much luck - partly due to my general igorance, partly, more specifically, because this example uses ZPT which I am not up to speed with. I have created the script and the page template as described in the HOWTO, and - since I am using VHM - I am also using the "getSiteRoot" script as descibed at: - http://lists.zope.org/pipermail/zpt/2001-September/002063.html I'm not at all sure if this script is behaving - when I test it, I get : - Resource not found Sorry, the requested resource does not exist. Check the URL and try again. Resource: Folder instance at 0133A270" When I attempt to acccess the site map I get: - Error Type: TALESError Error Value: exceptions.AttributeError on list_pages in '', at line 54, column 7 This is something of a show-stopper for me - I simply can't understand what this error is telling me or how to address it. Any feedback gratefully received... Regards, PhilK Fri, 27 Dec 2002 12:42 GMT @ Ganesh Email: phil(a)xfr.co.uk / Voicemail & Facsimile: 07092 070518 Tell me and I forget. Show me and I remember. Involve me and I understand. - Chinese saying

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n-step product initialization
by AM 27 Dec '02

27 Dec '02

Hi, I am writing a db based product and need a 3 step initialization for it. In the first step the users specify the db and other params. based on that they are presented with a choice of tables that they select and based on step 2 they then specify some more params. How do I go about doing something like that?? TIA AM -- ================================================================== Aseem Mohanty Neurobehavioral Systems Inc, 828 San Pablo Ave, Albany, CA 94706 (R) 510 7696011 (M) 510 3014871 (O) 510 5279231 ================================================================== "I saw `cout' being shifted "Hello world" times to the left and stopped right there!!" -- Steve Gonedes ==================================================================

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