August 2001 - Zope - Zope lists

Re: [Zope] zsql .dictionaries() question
by David Golden 09 Aug '01

09 Aug '01

Dieter: Thank you for your interest and assistance. Both are appreciated. > > What attribute is not found? > 'dictionaries', apparently. Thought I might be missing something in syntax of context().dictionaries() What I hope are relevant portions of error: *** Zope Error Zope has encountered an error while publishing this resource. Error Type: AttributeError Error Value: dictionaries ... Traceback (innermost last): File C:\Program Files\ZopeSite1\lib\python\ZPublisher\Publish.py, line 223, in publish_module File C:\Program Files\ZopeSite1\lib\python\ZPublisher\Publish.py, line 187, in publish File C:\Program Files\ZopeSite1\lib\python\Zope\__init__.py, line 221, in zpublisher_exception_hook (Object: sqlTrans) File C:\Program Files\ZopeSite1\lib\python\ZPublisher\Publish.py, line 171, in publish File C:\Program Files\ZopeSite1\lib\python\ZPublisher\mapply.py, line 160, in mapply (Object: datX) File C:\Program Files\ZopeSite1\lib\python\ZPublisher\Publish.py, line 112, in call_object (Object: datX) File C:\Program Files\ZopeSite1\lib\python\Shared\DC\Scripts\Bindings.py, line 324, in __call__ (Object: datX) File C:\Program Files\ZopeSite1\lib\python\Shared\DC\Scripts\Bindings.py, line 354, in _bindAndExec (Object: datX) File C:\Program Files\ZopeSite1\lib\python\Products\PythonScripts\PythonScript.py, line 336, in _exec (Object: datX) (Info: ({'script': <PythonScript instance at 019AEFA0>, 'context': <SQL instance at 019AE990>, 'container': <Folder instance at 01973730>, 'traverse_subpath': []}, (), {}, None)) File Script (Python), line 2, in datX (Object: <lambda>) File C:\Program Files\ZopeSite1\lib\python\Products\PythonScripts\Guarded.py, line 273, in __getattr__ File C:\Program Files\ZopeSite1\lib\python\Products\PythonScripts\Guarded.py, line 145, in __careful_getattr__ AttributeError: (see above) *** The ZSQL method sqlTrans: select * from owners *** The Python script datX: return context().dictionaries() *** I'm logged in as Manager, traversed to script as file://host/folder/sqlTrans/datX as previously noted. Zope 2.3.3 on Win98 platform. ZODBC and LocalFS products installed as well. *** Please let me know if additional data would be useful. Thanks again.

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ZPT instead of DTML Methods
by Peter Bengtsson 09 Aug '01

09 Aug '01

The http://www.zope.org/Members/johanc/IEMethod/IEMethod product is baseclassed on DTML Methods. Can this not be changed to ZPT instead? Because then one would be able to insert business logic without fearing that Microsoft messes with you. I've noticed that DTML makes IEMethods pretty irreversable. Can this be done easily d'you think? I'll maybe give it a go. Peter

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Bug in Zclasses permissions interface ?
by Ravindra 09 Aug '01

09 Aug '01

Hi All, I have a product with is developed using a zClass and Python Base. I am unable to access objects newly created using zope web interface. If I try to change any permissions zope gives the following error: Error Type: TypeError Error Value: too many arguments; expected 2, got 3 Traceback .. blah.. blah ... Thanks, Ravin

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Threads, ZODB, deactivate, setstate, etc...
by Olivier Deckmyn 09 Aug '01

09 Aug '01

Hi there ! I am working on my product ZExternalNews (http://www.zope.org/Members/odeckmyn/ZExternalNews) I have a problem that I did not have anticipated ! My product is made of 3 classes: 1/ ZExternalNewsManager (usually one per site), folderish that contains several ZExternalNewsChannel 2/ ZExternalNewsChannel (several per Manager), itemish. Contains 2 persistent properties (title and url) and a _v_items, a list of ZExternalNewsItem 3/ ZExternalNewsItem a very simple Python class (no inheritance from zope nor ZODB). It handles an atomic news item (like a single news item in slashdot for example). When ZExternalNewsManager starts, I also "fork" a thread that (simplified) does : while 1: MyManager.Refresh() sleep(MyManager.delay) Where MyManager.Refresh is a loop that calls refresh on every channel. This would work in a wonderful land...but not in real life. I've been searching for hours now... My problem is : It works for some time (sometime 10sec, sometimes 2 hours, sometime 10 min...), and then, I got a lot of : 2001-08-07T17:36:04 ERROR(200) ZODB Couldn't load state for '\000\000\000\000\000\000WG' Traceback (innermost last): File /isp/zope/newfun/lib/python/ZODB/Connection.py, line 508, in setstate AttributeError: 'None' object has no attribute 'load' (a lot of = one per ZExternalChannel instance) and a last : Exception in thread Thread-4: Traceback (innermost last): File "/usr/local/lib/python1.5/threading.py", line 376, in __bootstrap self.run() File "/isp/zope/newfun/lib/python/Products/ZExternalNews/ZExternalNews.py", line 454, in run self._manager.Refresh() File "/isp/zope/newfun/lib/python/ZODB/Connection.py", line 508, in setstate p, serial = self._storage.load(oid, self._version) AttributeError: 'None' object has no attribute 'load' After hours of thinking, I think this is because ZODB ask my objects to go to sleep (is this DEACTIVATING ?). The last modification I made was to implement __setstate__ so that _v_* attributes are declared there : I thought it would be ok after that. It is not :( Please help me ! It is quite a frustrating experience ! Do not hesitate to Is there a document I should read before understanding ? I think I've read quite a lot of things until now ! ;) Attached is the latest version of the .py. Other part of the product is downloadable here : http://www.zope.org/Members/odeckmyn/ZExternalNews Thanx for your support. Olivier. (this question was posted 2 days ago on zope-dev, without answer, so I try here ;-D )

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RE: [Zope] Threads, ZODB, deactivate, setstate, etc...
by Max Møller Rasmussen 09 Aug '01

09 Aug '01

> From: Olivier Deckmyn [mailto:odeckmyn.list@teaser.fr] > After hours of thinking, I think this is because ZODB ask my > objects to go > to sleep (is this DEACTIVATING ?). My guess would be that it is related to persistance. When Zope tries to clean up the memory and write change objects to the ZODB it would seem that some of your objects are not saved, and so the values that they contain does no longer exist. Perhaps your list of ZExternalNewsItem is changed with an append(someItem) or somesuch. So you need to set self._p_changed=1 or something. It reminds me of a problem I had where I forgot to subclass persistence in a class, and suddenly some stuff would be there no longer while other thing was still there allright. regards Max M

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fastcgi protocol
by Robert Frank 09 Aug '01

09 Aug '01

Hi, I'm in the process of writing a Roxen (webserver) module which should interface with Zope. I would like to do the same as the fastcgi module does for Apache. I have set up a simulation program, which simulates Zope in order to get the Roxen module to work. Using the simulation programm everything is fine, but when using Zope .... I need to know what to send to the socket (true TCP, not domain!) and what to expect from it. I start Zope with the following options: z2.py -X -u 90 -F 4445 -D Looking at the sources of Zope, I gathered the following: - open the socket - send a 10byte header containing the length of the following block as zero padded ascii - send the block containing the environment variables, each of the form: variable=value\0 - send a 10byte header containing the length of the following block as zero padded ascii - send the block containing the data from the browser (excluding the headers). - wait for a 10byte header containing the length of the following block as zero padded ascii - read the data to be sent to the browser, adding the confirmation line (e.g. HTTP 200 OK\r\n) - wait for a 10byte header containing the length of the following block as zero padded ascii - read the error data - close the socket Is this correct? What environment variables are neccessary? Thanks for any clarification, I really, really hope that someone out there can enlighten me and that I can get the module to work! Robert ------------------------------------- Institut fuer Informatik tel +41 (0)61 267 14 66 Universitaet Basel fax. +41 (0)61 267 14 61 Robert Frank Klingelbergstrasse 50 Robert.Frank(a)unibas.ch (NeXT,MIME mail ok) CH-4056 Basel (remove any no_spam_ from my return address) Switzerland http://www.ifi.unibas.ch/~frank

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Zope.cgi
by Jason C. Leach 09 Aug '01

09 Aug '01

hi, What is Zope.cgi? A file or dir? I can not seem to find one. j. -- ...................... ..... Jason C. Leach ..

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Control_Panel.Products.MyProduct
by Peter Bengtsson 09 Aug '01

09 Aug '01

I installed the latest HotFix (http://www.zope.org/Products/Zope/Hotfix_2001-08-04/README.txt) and now some DTML doesn't work when it used to work. This used to work: <dtml-with "Control_Panel.Products.GlasMasteri"> <dtml-with "PARENTS[0]"> <dtml-var extended_addform> </dtml-with> </dtml-with> Now I get Error Type: NameError Error Value: global name 'Control_Panel' is not defined I basically want to use methods and objects from the folder: MyProduct (or "GlasMasteri" like in the above example). How should I do this? Zope 2.4.0 on Python 2.1.1

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Re: problem
by Peter Bengtsson 09 Aug '01

09 Aug '01

Can you please give me the Traceback? It might be hidden in the HTML source of the error page. Please, email me, but in the future, also CC the community. Peter ----- Original Message ----- From: "Huayin Wang" <wang(a)rjka.com> To: <mail(a)peterbe.com> Sent: Wednesday, August 08, 2001 11:32 PM Subject: problem > When I installed it on Zope2.4.0 with FSSession0.4.2 > I followed instruction and was able to create an instance of Site Tracker > sucessfully but then when > I tried to view Site Tracker instance, I got the Resource not found error: > > in my directory, I have the following: > > prod/ > MailHost(mailhost instance) > sitetrackerSession(FSSesion instance) > aaaa(Site tracker instance) > > any idea? > > Site Error > An error was encountered while publishing this resource. > Resource not found > Sorry, the requested resource does not exist. > Check the URL and try again. > Troubleshooting Suggestions > The URL may be incorrect. > The parameters passed to this resource may be incorrect. > A resource that this resource relies on may be encountering an error. >

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Text insertion within a rendered textarea property
by Ausum 09 Aug '01

09 Aug '01

How would you perform this: I have dtml documents containing a body text as one of its properties. I need to insert html text (a table), provided by a method, within that text at the rendered page. I need the table to be placed at the beginning of the second paragraph of that text, or after a certain number of characters (whatever is more suitable to the page appeal). I'm just asking for advises, but code is welcomed as well. :) Thanks in advance, Ausum

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