[Zope] brain hurts regarding dynamic fcn args in Python
Hi- I guess I'm somewhere past a 'newbie' (after a few solid months) and I'm developing a calendar-based (but not based on calendar tag) 'event-log' 'black-box app' for lack of a better term, for eventual relase to Zope.org, if only as a helper for _new_ newbies. I'm stuck on what I guess is a pythonish thing and my brain hurts. Is there a (straightforward?) way to dynamically compose function argument lists? For example, in C, you can write" f(arg1, arg2, (conditional expression)?(val for TRUE state):(val for FALSE state)). Or one can embed a fcn call within an argument list in order to supply a needed function parameter. In my case here in Zope, sometimes I have to search a ZCatalog prior to displaying the results in a dtml-in looping construct. dtml-in "Catalog.searchResults(meta_type='EventDoc',event_date=[first,last],event_date_usage='range:min:max',sort_on='event_date ')" /dtml-in Now if the 'moderated' property is active I want to add the keyword arg reviewed='on' to the arg list at the time that the searchResults method is invoked. Since this invokation is in an expression it's certainly a python thing, but I can't find any reference to this type of capability in any reference I have. Did I miss something or is there just no simple way to do this? The only way I can see to do it is to wrap Catalog.searchResults() in an external method with some ifs and elifs. TIA. Jeff Sasmor [EMAIL PROTECTED] ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] Problem with 1 ZCatalog search on same page
Hi Zopistas- I have problem that I hope that there's an answer to. Perhaps this has been covered on this list already, but I couldn't find it by searching the NIP archives and 800+ results for "ZCatalog" was mind-numbing. I have two ZCatalog searches on the same page (in the same DTML method). Each has different fields so they have different numbers of results displayed in two tables. This works just fine. What's wierd is that the 'batch_size' code interacts between the two-- if the size of the first table's set of results is batch size and the size of the second table's results is batch size then the second table has a "next N results" link. If I click this then the second table dutifully displays the next data set. BUT- the first table just displays the LAST item it had displayed before. From a quick glance at the way that ZCatalog works, it seems as if this behaviour could be correct; and the batching code in the ZC can't handle more than one set of results associated with a single DTML method. But I am by no means sure of my interpretation of the python code here. Anyone have any insights? TIA, Jeff Sasmor [EMAIL PROTECTED] PS. For those Zopistas who are MontyPythonistas: I get to see "Eric Idle exploits Monty Python" tonite (weds 6/28) at Carnegie Hall in NewYawkCity. They promise lumberjacks, etc. This goes on tour to some cities in the US this summer. Bought these tickets months ago so have the 4th Row Orchestra! I hope this is as good as seeing Monty at NYC's Civic Center dtml-more-years-ago-than-I'd-like-to-admit. John Cleese stepped on my foot whilst selling albatrosses (?) at that one. But I digress... ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] FYI - poss. reindex_object alleged 'bug' workaround
Zopers and PyCoders- I was having a problem with ZCatalog-- namely, editing the properties of a CatalogAware item (in a custom form) after creation resulted in no change to the indexed value in the Catalog. I know about reindex_object and was using that-- so it wasn't just that I was leaving it out! Hmmm. I read the [EMAIL PROTECTED] list archives on zope.nipltd.com (what a great resource, thanks!!!) and found some mentions that this was broken in 2.1.6, which is what I am using. ANYWAY, I found that dtml-call "_.this.reindex_object()" solved the problem immediately (well, for me, anyway). Just thought I would pass this on so it would be archived for others with this problem (or at least something to try in a moment of desperation!). Why does this work? I have some guesses about some of the PyCode in CatalogAwarenesss.py but I'm still too much of a Python newbie to make any comments..... Jeff Sasmor [EMAIL PROTECTED] ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] Renderable ZClass and Zope 2.2
Hi-
I am trying to 'update' my EventFolder product to
Zope 2.2 but a really wierd thing is going on:
When I try to create an instance (an EventFolder, which is
subclassed from Renderable and ObjectManager) I get an
error shown in the traceback below.
There EventFolder_add method in the ZClass creates a
catalog (Catalog) which does not seem to be accessable...
yet, why is the instance being renedered at all? It appears
as if the instance is being rendered before the transaction
is committed and therefore there's no Catalog-- this I get. But
why is the instance being rendered at all?
Is there some incompatability with Renderable and 2.2?
Confusedly,
Jeff Sasmor
[EMAIL PROTECTED]
---
Error Type: AttributeError
Error Value: Catalog
Traceback (innermost last):
File /usr/local/Zope220/lib/python/ZPublisher/Publish.py, line 222, in publish_module
File /usr/local/Zope220/lib/python/ZPublisher/Publish.py, line 187, in publish
File /usr/local/Zope220/lib/python/Zope/__init__.py, line 221, in
zpublisher_exception_hook
(Object: RoleManager)
File /usr/local/Zope220/lib/python/ZPublisher/Publish.py, line 171, in publish
File /usr/local/Zope220/lib/python/ZPublisher/mapply.py, line 160, in mapply
(Object: EventFolder_add)
File /usr/local/Zope220/lib/python/ZPublisher/Publish.py, line 112, in call_object
(Object: EventFolder_add)
File /usr/local/Zope220/lib/python/OFS/DTMLMethod.py, line 167, in __call__
(Object: EventFolder_add)
File /usr/local/Zope220/lib/python/DocumentTemplate/DT_String.py, line 502, in
__call__
(Object: EventFolder_add)
File /usr/local/Zope220/lib/python/DocumentTemplate/DT_Let.py, line 147, in render
(Object: folder="EventFolder.createInObjectManager(REQUEST['id'], REQUEST)")
File /usr/local/Zope220/lib/python/DocumentTemplate/DT_With.py, line 146, in render
(Object: folder)
File /usr/local/Zope220/lib/python/DocumentTemplate/DT_Util.py, line 337, in eval
(Object:
manage_addProduct['ZCatalog'].manage_addZCatalog(this(),'Catalog','EventCatalog' ))
(Info: this)
File string, line 0, in ?
File /usr/local/Zope220/lib/python/Products/ZCatalog/ZCatalog.py, line 112, in
manage_addZCatalog
File /usr/local/Zope220/lib/python/Products/Renderable/Renderable.py, line 17, in
__str__
(Object: Renderable)
File /usr/local/Zope220/lib/python/OFS/DTMLMethod.py, line 167, in __call__
(Object: render)
File /usr/local/Zope220/lib/python/DocumentTemplate/DT_String.py, line 502, in
__call__
(Object: render)
File /usr/local/Zope220/lib/python/DocumentTemplate/DT_With.py, line 146, in render
(Object: ZopeTime)
File /usr/local/Zope220/lib/python/DocumentTemplate/DT_Let.py, line 147, in render
(Object: tdate="'%s/%s/1' % (tyear,tmonth) "
this_month="'%s/%s' % (tyear,tmonth) "
ddate="_.DateTime(tdate)")
File /usr/local/Zope220/lib/python/DocumentTemplate/DT_Let.py, line 147, in render
(Object: smeth="dateSearch.absolute_url()")
File /usr/local/Zope220/lib/python/DocumentTemplate/DT_Util.py, line 337, in eval
(Object:
renderMonth(ddate,smeth,bodyFgColor,bodyBgColor,headingFgColor,headingBgColor,
'showyear' , moderated))
(Info: smeth)
File string, line 0, in ?
File /usr/local/Zope220/lib/python/Products/ExternalMethod/ExternalMethod.py, line
270, in __call__
(Object: renderMonth)
(Info: ((DateTime('2000/07/01'),
'http://www.ptang.com:8080/test/asdasd/dateSearch', '#00', '#ff',
'#ff', '#00', 'showyear', 'on'), {}, None))
File /usr/local/Zope220/lib/python/Products/EventFolder/Extensions/rendercal.py,
line 97, in renderMonth
(Object: Renderable)
AttributeError: (see above)
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[Zope] ZCatalog Question
I have a product that has three CatalogAware Zclasses. They are indexed by the catalog correctly, but when I look at the catalog's status tab, the number of objects for each index are identical, even though the ZClasses themselves don't all have the same properties. Intuitively, this seems wrong. Or maybe my intuition is wrong. It "makes more sense" to have differing number of objects based on how many of each type of ZClass instance was indexed and what the properties of each one was. Anyone have any enlightenment (or is that Zen...) ? Jeff Sasmor [EMAIL PROTECTED] ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] Can't change title of a common instance property sheet
I suppose this is some sort of lack in the Zope management UI, but maybe someone else knows how to do this: If you create a ZClass property sheet you can pick an ID and a title. But you don't seem to be able to EDIT the title of the property sheet ever again. Is there some magic property sheet property name or is there just no way to edit the title from the management interface? The other bizzare thing is that you can export a property sheet, but there seems no obvious way to import one anywhere. Anyone have a clue on this? What's it there for? TIA Jeff Sasmor [EMAIL PROTECTED] ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope-dev] Interaction between new (2.2) ZCatalog and Renderable
Hi Zdevs, I posted a message to [EMAIL PROTECTED] and then later figured out the problem and now feel that the issue belongs in Zope-Dev, so here it goes. Submitted for your approval... I think that I have found an interaction between changes made in manage_addZCatalog (lib/python/Products/ZCatalog/ZCatalog/py) and the Renderable ZClass product. It's also possible that this interaction will affect other things as well. The new version of method 'manage_addZCatalog' has calls to str() near its beginning. The older (2.1.6) does not. The Renderable product overrides str to do its work. This gets _very_ messy when you initialize a catalog in the xxx_add dtml method for a ZClass (that is, if you create an instance of the ZClass and the _add method instantiates a ZCatalog instance.) and the ZClass itself is renderable. The manage_addZCatalog method ends up invoking the str() method that's in the Renderable product. This code attempts to publish(?) the a dtml method named render (this is what it does by default). In my case, the dtml method tries to query the created ZCatalog instance. This does not work! since the ZC instance isn't actually created since the _add method has not completed(?). So the render dtml method borks with an attribute error. Correct me if I have reverse-engineered these conclusions from looking at the traceback and made a logic error As one can see from the traceback attached to the end of this email, the manage_add methof (I put X near where this mess begins) warps into the render dtml method at line 112 of manage_addZCatalog, which is the first str() (can be seen in the src). This ends up in an External Method, rendercal.py (last line of traceback). If you were to look there you'd se that it's doing a Catalog.searchResults(). **SO** it appears as if you cannot instantiate a ZCatalog in the _add dtml method of a ZClass IFF the ZClass inherits from Renderable AND if the render dtml method of the class (required by Renderable) uses the ZCatalog. This interaction may very well affect other products as well. But right now my brain hurts. Excuse me if someone else reported this, but I haven't seen mention of it so far. This should be easy to reproduce. On a 2.2 system that has the Renderable ZClass product installed, install EventFolder (it's on Zope.org, there's a .zexp and some External Methods in the tgz file, just untar it in the Zope root and copy the .zexp to the import dir and import it). Try to create an instance and you should get this error. It seems to me the only solution is to recreate the class without the Renderable inheritance. Not a big deal to lose But what other schizoZopia is waiting in the future. Jeff Sasmor [EMAIL PROTECTED] Traceback (innermost last): File /usr/local/Zope220/lib/python/ZPublisher/Publish.py, line 222, in publish_module File /usr/local/Zope220/lib/python/ZPublisher/Publish.py, line 187, in publish File /usr/local/Zope220/lib/python/Zope/__init__.py, line 221, in zpublisher_exception_hook (Object: RoleManager) File /usr/local/Zope220/lib/python/ZPublisher/Publish.py, line 171, in publish File /usr/local/Zope220/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: EventFolder_add) File /usr/local/Zope220/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: EventFolder_add) File /usr/local/Zope220/lib/python/OFS/DTMLMethod.py, line 167, in __call__ (Object: EventFolder_add) File /usr/local/Zope220/lib/python/DocumentTemplate/DT_String.py, line 502, in __call__ (Object: EventFolder_add) File /usr/local/Zope220/lib/python/DocumentTemplate/DT_Let.py, line 147, in render (Object: folder="EventFolder.createInObjectManager(REQUEST['id'], REQUEST)") File /usr/local/Zope220/lib/python/DocumentTemplate/DT_With.py, line 146, in render (Object: folder) File /usr/local/Zope220/lib/python/DocumentTemplate/DT_Util.py, line 337, in eval (Object: manage_addProduct['ZCatalog'].manage_addZCatalog(this(),'Catalog','EventCatalog' )) (Info: this) File string, line 0, in ? it begins File /usr/local/Zope220/lib/python/Products/ZCatalog/ZCatalog.py, line 112, in manage_addZCatalog how did we get here File /usr/local/Zope220/lib/python/Products/Renderable/Renderable.py, line 17, in __str__ (Object: Renderable) File /usr/local/Zope220/lib/python/OFS/DTMLMethod.py, line 167, in __call__ (Object: render) File /usr/local/Zope220/lib/python/DocumentTemplate/DT_String.py, line 502, in __call__ (Object: render) File /usr/local/Zope220/lib/python/DocumentTemplate/DT_With.py, line 146, in render (Object: ZopeTime) File /usr/local/Zope220/lib/python/DocumentTemplate/DT_Let.py, line 147, in render (Object: tdate="'%s/%s/1' % (tyear,tmonth) " this_month="'%s/%s' % (tyear,tmonth) " ddate="_.DateTime(tdate)") File /usr/local/Zope2
[Zope-dev] Re: [Zope] CatalogAware
Subject: [Zope] CatalogAware CatalogAware has been blamed for alot of problems. Its three weaknesses I am aware of are: snip b. It uses URLs not paths, and so doesnt play right with virtual hosting * I ran into this problem using VHMonster with my EventFolder product and found a work-around, just for anyone who might be struggling with this See http://www.netkook.com/Members/jeff/ef/faq/document_view#vhost This article discusses how to use _vh_ with VHM. (boy does that sound cryptic...) Jeff Sasmor [EMAIL PROTECTED] www.netkook.com ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
