March 2001 - Zope-Dev

Re: Subject: Re: [Zope-dev] Comment on CVS change
by Dieter Maurer 21 Mar '01

21 Mar '01

Tres Seaver writes: > .... > Given that any site manager can override the policy trivially, using > only two lines of DTML, should we really be switching the (admittedly > arbitrary) existing polciy embedded in the core? > > Tres. > > P.S. > > <dtml-let search_terms="_.string.split( search_text )" > search_with_and="_.string.join( search_terms, ' and ' )"> > <dtml-var searchCatalog> > </dtml-let> > > OK, so it is two and a half lines. Be careful! The catalog supports "..." and "(...)". Your two lines may give spurious operators for white space inside "..." and after "(" or before ")" Dieter

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Zope-SQL Server2000 question
by Bryan Baszczewski 21 Mar '01

21 Mar '01

I am curious of how popular SQL Server, particularly 2000, is among Zope developers. We have recenly upgraded from SQL 7 to 2000 and noticed most of the database support for Zope centers around Oracle, MySQL, Postgres, Sybase, etc... How many people are using this ZmxODBC database adapter? What kind of support do you recieve, if any? And what kind of problems/issues/praise do you have? Any info would be appreciated. Thanks a bunch! Bryan

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Python 2
by Sin Hang Kin 21 Mar '01

21 Mar '01

Is python 2 ready for the upcoming beta? Will the next release of zope win32 come with python 2 or use the installed python if available? Rgs, Kent Sin --------------------------------- kentsin.weblogs.com kentsin.imeme.net

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RE: [Zope-dev] call pythonscript from python
by Tim McLaughlin 21 Mar '01

21 Mar '01

I was trying to call a PythonScript from a __getstate__ method of the object. That seems impossible since the object appears to be already unwrapped. Know of any ways to get back the wrapper after it has been disposed of? I'm trying to add a manage_afterPropertyChanged hook, and I think I've found another way to do it. Thanks for the help, Tim -----Original Message----- From: Evan Simpson [mailto:evan@digicool.com] Sent: Wednesday, March 21, 2001 10:41 AM To: Tim McLaughlin; zope-dev(a)zope.org Subject: Re: [Zope-dev] call pythonscript from python From: "Tim McLaughlin" <tim(a)BCSWebservices.net> > Anybody know how I can call a pythonscript from python? Currently I can > call it, but I seem to have no context or security context, because it > either will not let me access anything or fail with an attribute error in > the context. What are the params that I NEED to pass in so that it can do > its bindings (and if you know how to get them automagically, that would be > incredible)? How does the Python code get executed (External Method? Product?) and how does it get access to the Script? Calling a Script should indeed automagically give it context from its acquisition wrapper. Cheers, Evan @ digicool

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call pythonscript from python
by Tim McLaughlin 21 Mar '01

21 Mar '01

Anybody know how I can call a pythonscript from python? Currently I can call it, but I seem to have no context or security context, because it either will not let me access anything or fail with an attribute error in the context. What are the params that I NEED to pass in so that it can do its bindings (and if you know how to get them automagically, that would be incredible)? Tim ___________________________________________________________ Tim McLaughlin BCSwebservices.net Director, Technical Group 1950 Old Gallows Road tel: (703) 790.8081 x111 Suite 201 tim(a)bcswebservices.net Vienna, VA 22182 www .bcswebservices. net

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z2.py and environment variables
by Dario Lopez-K�sten 21 Mar '01

21 Mar '01

Hello! I am trying to understand how z2.py and enviroments variables work, so that I can have complete control of how I start Zope. I-am-not-a-Python-programmer-yet, so I apologise in advance if the question is a stupid one. Given the possibility to use INSTANCE_HOME etc, can I override most of the uppercase variables defined in z2.py by setting and exporting them in my /bin/sh script or are the only "overridable" variables the ones defined and used in lib/python/App/FindHomes.py? My guess would be the ones in FindHomes.py, as calls like try: home=os.environ['SOFTWARE_HOME'] seems to have something to do with it :-) I just need to make sure which one is the case. Thanks. /dario - -------------------------------------------------------------------- Dario Lopez-Kästen Systems Developer Chalmers Univ. of Technology dario(a)ita.chalmers.se ICQ will yield no hits IT Systems & Services

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Re: [Zope-dev] Implementing ZPattern: Containment
by Steve Spicklemire 21 Mar '01

21 Mar '01

Hi Johan, I wrote: > The best way I've found is to provide a method (or methods) in the > Specialist of the contained item to get ids of those instances satisfying certain > criteria... > > e.g., getToDoIdsForDoer( aDoer ) > > (the contained item keeps a reference to the id of its container.) then you replied: > How well does this apply to the WhoIKnow pattern? > Could you say that the Specialist is the association? > In that case how do I create a n-n relation, or maybe I never do that? > I can't really find any Patterns that matches n-n situation, so I assume > it my modell probally would wrong if I end up with that, right? > > then I went on vacation. ;-) I think that in most of these situations you can have a 'catalogish' method in the Specialist that manages the 'n' things that finds those related to the '1'. (e.g., getToDoIdsForDoer( aDoer )). This can then be mapped to an attribute of the '1' specailist (myToDos), so that it does 'know' about all it's todos, its just that under the covers (in it's rack) the myToDos attribute is really fulfilled by calling the todos specialist and asking for all the todos assocaited with a particular doer. In the n-n case it's really no different, except that each 'n' thing needs to know which of the other 'n' thing(s) it's associated with so the catalogish method can pull out the ids. fun eh? take care, -steve

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ZPatterns style question
by Lex Berezhny 21 Mar '01

21 Mar '01

Hello, I dont know if i'm missing something, or if this is just a style question. But where do the implimentation specific get/set methods go (the functions called within a SkinScript for example)? Do i just stick them anywhere in the aquistion path, or is there some logical place I should place them? How can I write my application so that the user can switch data sources with a click of a button (ie, without having to delete one implimentations' methods, and paste the new ones)? I hope my question makes sense. BTW once i figure this out, i'll be able to finish my tutorial on ZPatterns: http://www.zope.org/Members/eukreign/ZPatternsTutorial - lex __________________________________________________ Do You Yahoo!? Get email at your own domain with Yahoo! Mail. http://personal.mail.yahoo.com/

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Overriding traversal
by Andy McKay 21 Mar '01

21 Mar '01

We have a SQL method that works quite nicely by messing around with __bobo_traverse__ meaning we can pass in long URL's as arguments such as /SQLMethod/a/b/c, /a/b/c is an argument into ZSQL. This is extremely useful to use. We do this by overiding __bobo_traverse__. The problem occurs when we mess around with the management interface it seems things such as manage_workspace can't be returned by using the usual suspects and I get permission error since <guess>BaseRequest cant seem to get the correct roles</guess> What would be really nice is if I can call __bobo_traverse__ and do my thing and if it all goes wrong, what the hey I just return with no change. This post could go on for a while, but I dont want to bore you. Any advice? Thanks in advance. -- Andy McKay.

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ZCatalog bug in 2.3.1b2
by Andy Dawkins 21 Mar '01

21 Mar '01

I posted this before but didn't get a reply. Has any one seen this bug, Or do they know a fix? ATM this is stopping me using 2.3.1b2 which is a bad thing(tm) ----------- Zope Errorr Zope has encountered an error while publishing this resource. Error Type: TypeError Error Value: len() of unsized object With this traceback: Traceback (innermost last): File /usr/local/src/Zope-2.3.1b2-linux2-x86/lib/python/ZPublisher/Publish.py, line 223, in publish_module File /usr/local/src/Zope-2.3.1b2-linux2-x86/lib/python/ZPublisher/Publish.py, line 187, in publish File /usr/local/src/Zope-2.3.1b2-linux2-x86/lib/python/Zope/__init__.py, line 221, in zpublisher_exception_hook (Object: Traversable) File /usr/local/src/Zope-2.3.1b2-linux2-x86/lib/python/ZPublisher/Publish.py, line 171, in publish File /usr/local/src/Zope-2.3.1b2-linux2-x86/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: executeSearch) File /usr/local/src/Zope-2.3.1b2-linux2-x86/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: executeSearch) File /usr/local/src/Zope-2.3.1b2-linux2-x86/lib/python/OFS/DTMLMethod.py, line 189, in __call__ (Object: executeSearch) File /usr/local/src/Zope-2.3.1b2-linux2-x86/lib/python/DocumentTemplate/DT_String.py, line 538, in __call__ (Object: executeSearch) File /usr/local/src/Zope-2.3.1b2-linux2-x86/lib/python/DocumentTemplate/DT_Let.py, line 146, in render (Object: Results="Catalog(REQUEST=REQUEST)") File /usr/local/src/Zope-2.3.1b2-linux2-x86/lib/python/DocumentTemplate/DT_Util.py, line 334, in eval (Object: Catalog(REQUEST=REQUEST)) (Info: REQUEST) File <string>, line 0, in ? File /usr/local/src/Zope-2.3.1b2-linux2-x86/lib/python/Products/ZCatalog/ZCatalog.py, line 530, in searchResults (Object: Traversable) File /usr/local/src/Zope-2.3.1b2-linux2-x86/lib/python/Products/ZCatalog/Catalog.py, line 654, in searchResults File /usr/local/src/Zope-2.3.1b2-linux2-x86/lib/python/Products/ZCatalog/Catalog.py, line 591, in _indexedSearch TypeError: (see above) -------- Here is the line which calls the search: sr = self.searchResults({'Type' : type, 'sort_on':'lowercase_title_'}) fyi. type = 'TypeTest' The indexes are as follows: Status = Text Index Type = Field Index Identifier = Field Index lowercase_title_ = Field Index parent_identifiers_ = Keyword Index The meta types are like this: Title id identifier There are only 13 records in the catalog. And there are some results to be returned. Cheers -Andy

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