August 1999 - Zope-Dev

I guess ZODBC3.3 not ready for Zope 2.B4?
by Brad Clements 12 Aug '99

12 Aug '99

I just converted a BOBO Pos database with bbb.py to Zope 2.0B4, added ZODBC 3.3, brought up the server and connected to an MS SQL server via ODBC. When executing a test query of a previously working SQL Query, I get the failure below. I suspect that I need to work on the ODBC adapter, baring really making it transactional can I just add that mix-in class that has been mentioned as a cheap hack to make DAs work with Zope 2? I'm getting Error type: AttributeError Error value: tpc_begin Traceback (innermost last): File c:\zope\ZopeAir\lib\python\ZPublisher\Publish.py, line 209, in publish_module File c:\zope\ZopeAir\lib\python\ZPublisher\Publish.py, line 179, in publish File c:\zope\ZopeAir\lib\python\Zope\__init__.py, line 199, in zpublisher_exception_hook (Object: ApplicationDefaultPermissions) File c:\zope\ZopeAir\lib\python\ZPublisher\Publish.py, line 169, in publish File c:\zope\ZopeAir\lib\python\ZODB\Transaction.py, line 236, in commit AttributeError: (see above) Brad Clements, bkc(a)murkworks.com (315)268-1000 http://www.murkworks.com (315)268-9812 Fax netmeeting: ils://ils.murkworks.com ICQ: 14856937

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ZSybase adapter for Zope 2 available?
by Brad Clements 12 Aug '99

12 Aug '99

The DA status page says this is "integrated", but I can't find it in the Zope 2.b4 release, or on the downloads page. I do find the jan 99 zsybase adapter in the contribs page. Is this commercial only at this time? I'd like to try this adapter instead of ODBC to get at MS-SQL server.. Brad Clements, bkc(a)murkworks.com (315)268-1000 http://www.murkworks.com (315)268-9812 Fax netmeeting: ils://ils.murkworks.com ICQ: 14856937

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Attribute Error: __bases__
by Jonas Juselius 12 Aug '99

12 Aug '99

Hello all, I have encountered a strange problem: the tuple 'class.__bases__' has disappeared. It should be a Python defined variable, but it's gone... The problem manifested it self by trying to call 'manage_access()' of a Product I'm working on, which resulted in: Error Type: AttributeError Error Value: __bases__ in gather_permissions() in RoleManager. My class inherits (ObjectManager, PropertyManager, RoleManager, SimpleItem), which is basicly what a Folder inherits. A funny thing is that if I inherit Folder instead, the problem disappears. I also tried a method 'returnBases(self): return self.__bases__' of my class, and it does not work (results in the same error). Any clues? Best regards, jonas -- *************************************************************************** Jonas Juselius e-mail...: jonas(a)iki.fi voice....: +358 9 191 40188 P.O. Box 55/ Department of Chemistry GSM......: 040 506 6599 FIN-00014 University of Helsinki fax......: +358 9 191 40169 FINLAND http://www.iki.fi/jonas Home address: Helsinginkatu 16 B 42 tel......: +358 9 753 3369 00500 Helsinki FINLAND ***************************************************************************

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replication
by Joerg Wittenberger 12 Aug '99

12 Aug '99

Hello, I tried to find something within zope, which would allow me to replicate, that is syncronize parts of one zope isntallation with parts of another one. To make it a bit clearer: I'd like to replicate a squishdot-site at another location. Postings at either side should appear at both (like usenet news). This description is a bit squishdot centric. Id rather like to synchronize any "synchronizable" object. I see much more use for it, e.g., develop some stuff at the laptop and sync with the production server, which might have been changed meanwhile. If there is a reason, why this is not generally possible, I could live with a master/slave solution, where I would install a master at one site and mirror it at the other. Is there already something like this in the zope world? Thanks a lot /Jerry

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Trying to design a PythonMethod Product
by Evan Simpson 12 Aug '99

12 Aug '99

I'm making a serious run at trying to create a Product which will allow through-the-web creation of methods written in straight Python. Right now what I've get is a pile of brainstorming, and I'd appreciate feedback. Basically, I plan to take an arbitrary chunk of Python code, wrap it in a function definition, compile it, and then thrash the resulting bytecodes with bytecodehacks (see http://starship.python.net/crew/mwh/bch/index.html) This will serve the dual purposes of enforcing restrictions on what the code can do, and bending the semantics for better Zope integration. Thoughts so far: 1. Must store a PythonMethod as raw text for editing purposes. Compile/hack on each load, or try to store the compiled function for speed? 2. Allow simple assignment, and no other kind. "x = anything" is legal, but not "x[0] = ...", "x.spam = ...", "x() = ...", etc. Tuple/list unpacking might also be allowed. 3. Disallow "del" and "exec" entirely. 4. Restrict "import" to modules/packages found in a particular location, so that 'safe' modules can be used. 5. Allow "while" and "for". Insert 'escape code' at the bottom of every loop, to allow PythonMethods to 'time out' after some elapsed time or loop count. 6. Allow "print" to be used to generate rendered output by replacing it with a function that accumulates text. If anything other than literal "None" is returned, the collected "print" text is discarded, otherwise it becomes the return value (on "return", "return None", and on implicit return, but not on "x=None; return x", for example). 7. Either disallow "global", or redirect access to globals into a controlled namespace. 8. Provide the Zope standard builtins (and tags?) as builtins. or-have-I-missed-a-showstopper-ly y'rs Evan Simpson

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presenting cookie-free shopping cart
by Josh Zeidner 12 Aug '99

12 Aug '99

here is the cookie free basket product. Also I attached a exported object that shows you how to use it. In addition, you must make a folder in the Shared directory called StoreSession and unzip the contents of also.zip into it. Basically the product is a folder that provides the following functions: addToBasket( productid, quantity, REQUEST ) - adds a quantity of an item to the basket getItems( REQUEST ) - gets a list of objects that show the products makeSessionLink( resource, REQUEST ) - creates a URL to another page in the basket session - one uses it like this <a href="">ANOTHER PAGE</a> - if you dont use makeSessionLink you will not preserve the session - have fun Josh Z _______________________________________________________________ Get Free Email and Do More On The Web. Visit http://www.msn.com

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Minor quibble with the "let" tag
by Alexander Staubo 12 Aug '99

12 Aug '99

For programmers (like me) who like our syntax consistent, the inability to write <dtml-let foo = 1> (because spaces are not permitted around the equivalence operator) is annoying. I have to write <dtml-let foo=1> and that's just plain "ugh!" in my book. Can't something be done about this? Why not accept whitespace in the first place? Should be simple enough, shouldn't it (looking at DT_Let.py, I don't see exactly why not)? -- Alexander Staubo http://www.mop.no/~alex/ "He won a first at Oxford, squandered three fortunes, made love to a thousand women, imbibed strange drugs, sold his soul for Rock 'n' Roll, almost pipped Einstein for the Nobel Prize, was barred from every Chinese noodle parlour in West London and died penniless, at a Hastings boarding-house in his ninetieth year." --Robert Rankin, _The Book of Ultimate Truths_

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Re: [Zope-dev] Minor quibble with the "let" tag
by Anthony Baxter 12 Aug '99

12 Aug '99

>>> Alexander Staubo wrote > <dtml-let foo = 1> > <dtml-let foo=1> > > Can't something be done about this? Why not accept whitespace in the > first place? Should be simple enough, shouldn't it (looking at > DT_Let.py, I don't see exactly why not)? Won't this break the 'HTML-ish' nature of DTML? Can you do <tag name = value> in HTML? (I thought not, but I just tried it, and netscrape let it work. not that _that_ means anything...) Anthony

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Re: [Zope-dev] Zope SQL Query builder product?
by Anthony Baxter 12 Aug '99

12 Aug '99

>>> Jim Tittsler wrote > > check out www.interlink.com.au/~anthony/ > That yields a 404 Not Found error. to quote a popular advert here - "bugger". Try instead http://www.interlink.com.au/anthony/ Anthony, who should check his own URLs before posting. :)

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Re: [Zope-dev] Trying to design a PythonMethod Product
by Josh Zeidner 11 Aug '99

11 Aug '99

Isn't this the same as External Methods? -josh z >From: "Evan Simpson" <evan(a)tokenexchange.com> >To: <zope-dev(a)zope.org> >Subject: [Zope-dev] Trying to design a PythonMethod Product >Date: Wed, 11 Aug 1999 16:34:39 -0500 > >I'm making a serious run at trying to create a Product which will allow >through-the-web creation of methods written in straight Python. Right now >what I've get is a pile of brainstorming, and I'd appreciate feedback. > >Basically, I plan to take an arbitrary chunk of Python code, wrap it in a >function definition, compile it, and then thrash the resulting bytecodes >with bytecodehacks (see >http://starship.python.net/crew/mwh/bch/index.html) >This will serve the dual purposes of enforcing restrictions on what the >code >can do, and bending the semantics for better Zope integration. > >Thoughts so far: > >1. Must store a PythonMethod as raw text for editing purposes. >Compile/hack >on each load, or try to store the compiled function for speed? > >2. Allow simple assignment, and no other kind. "x = anything" is legal, but >not "x[0] = ...", "x.spam = ...", "x() = ...", etc. Tuple/list unpacking >might also be allowed. > >3. Disallow "del" and "exec" entirely. > >4. Restrict "import" to modules/packages found in a particular location, so >that 'safe' modules can be used. > >5. Allow "while" and "for". Insert 'escape code' at the bottom of every >loop, to allow PythonMethods to 'time out' after some elapsed time or loop >count. > >6. Allow "print" to be used to generate rendered output by replacing it >with >a function that accumulates text. If anything other than literal "None" is >returned, the collected "print" text is discarded, otherwise it becomes the >return value (on "return", "return None", and on implicit return, but not >on >"x=None; return x", for example). > >7. Either disallow "global", or redirect access to globals into a >controlled >namespace. > >8. Provide the Zope standard builtins (and tags?) as builtins. > >or-have-I-missed-a-showstopper-ly y'rs >Evan Simpson > > >_______________________________________________ >Zope-Dev maillist - Zope-Dev(a)zope.org >http://www.zope.org/mailman/listinfo/zope-dev > >(To receive general Zope announcements, see: >http://www.zope.org/mailman/listinfo/zope-announce > >For non-developer, user-level issues, >zope(a)zope.org, http://www.zope.org/mailman/listinfo/zope ) _______________________________________________________________ Get Free Email and Do More On The Web. Visit http://www.msn.com

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