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Showstopper: need very basic help with Zope2 persistence
by Joe Grace 23 Jul '99

23 Jul '99

Hi, I'm using Zope2 and am trying to get Persistence working for the first time by creating an object store. I'm using the documentation: http://www.zope.org/Documentation/Reference/ObjectPublishingIntro which has a chunk of code to do a very basic store on a Person. I've tried this code both within and without Zope with no success. I'm wondering whether 1. The code (appended) doesn't work for Zope2? When ExternalMethod->Add'ed into Zope, I get: Zope Error Zope has encountered an error while publishing this resource. exceptions.AttributeError Sorry, a Zope error occurred. When run outside Zope, I get: //D/Zope.W32/Extensions:-) python Person.py Traceback (innermost last): File "Person.py", line 14, in ? object_store = BoboPOS.PickleDictionary("people_store.db") File "D:\Zope-2.0.0a4-src\lib\python\BoboPOS\PickleDictionary.py", line 162, i n __init__ jar=PickleJar.PickleJar(db,cache_size,cache_age=cache_age) File "D:\Zope-2.0.0a4-src\lib\python\BoboPOS\PickleJar.py", line 120, in __ini t__ cache=self.cache=PickleCache(cache_size,cache_age) AttributeError: 'int' object has no attribute 'setklassstate' Is there some new code which works in Zope2 to get persistence? 2. My Zope2 installation is somehow broken? I would really appreciate some help on this (I thought) basic issue as it's a show-stopper for what I'm doing. I didn't expect to have this problem since it seem(ed) so well documented and basic. If this question is somehow unanswerable, I'd like to know that too (so I know to give up)! Thanks, = Joe = P.s., I've tried a bunch of variations and searched code for similar fragments all to no avail. If someone has a code fragment or pointer to working code, please let me know. -=- Code -=- import BoboPOS class Person(BoboPOS.Persistent): "A persistent person" def __init__(self,name,age): self.name=name self.age=age def listDB( self): return "Hello" # define the object store # object_store = BoboPOS.PickleDictionary("people_store.db") # retrieve billy from the object store # if object_store.has_key("billy"): # if billy is in the object store, then # load it from the object store # billy=object_store["billy"] else: # since billy isn't already in the object # store, we must create the object and # place it in the object store. # billy=object_store["billy"]=Person("Billy",77) # normally Zope will handle transactions, # but in this special case, we need to # commit the transaction to save the new # persistent object # get_transaction().commit() # display the object that we retrieved # from the object store # listDB()

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SQL Input
by Jean-Claude Jung 23 Jul '99

23 Jul '99

Hello How can I inserting, deleting and updating data (ODBC) with sql in Zope?

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RE: [Zope] Question
by Ken Manheimer 23 Jul '99

23 Jul '99

Michel wrote: > I would like everyone to take a stab at this question and send me a one > sentence answer. > > What is Zope? I've been thinking in the following vein for a while, so (forgive me:-) i can't resist posting my blathering to the group: Using Zope you structure web sites as remotely managed programming environments - it translates content management and programming constructs onto web (and other protocol) sites. Ie, Zope does impedence matching by which you can remotely control and program the web. (To elaborate, Zope translates web content hierarchies, document structuring, form and authentication state, and the dynamics of site traversal, onto filesystem-like organizations and authentication, protocol structurings, and program state and control flow.) Ken

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RE: [Zope] Re: [Zope-dev] creating one ZClass instance in the con structor of another
by Kevin Dangoor 23 Jul '99

23 Jul '99

--- Brian Lloyd <Brian(a)digicool.com> wrote: > Can you post the actual scripting that you're using? > It's hard > for me to narrow down what's going on without > context... OK. Here's the layout: Products Kendermedia KMArticleStore (ZClass) AddArticle (DTML Method) KMArticle (ZClass) KMArticle is not under the KMArticleStore because it is actually contained within a Folder (as you will see from the AddArticle code) I am using the default Factory and add methods at this point. AddArticle (please excuse the formatting here, I'm sending from yahoo): <dtml-var standard_html_header>  <dtml-call "REQUEST.set('ts', ZopeTime())"> <dtml-call "REQUEST.set('tsyear', _.str(ts.year()))"> <dtml-call "REQUEST.set('tsmonth', _.str(ts.month()))"> <dtml-call "REQUEST.set('uniqueID',_.str(_.int(ts)))"> <dtml-call "REQUEST.set('id', uniqueID)">  <dtml-if "not _.hasattr(PARENTS[0], tsyear)"> <dtml-call "manage_addFolder(tsyear, '')"> </dtml-if>  <dtml-if "not _.hasattr(_[tsyear], tsmonth)"> <dtml-with "_[tsyear]"> <dtml-call "manage_addFolder(tsmonth, '')"> </dtml-with> </dtml-if> <dtml-with REQUEST> <dtml-with "_[tsyear]"> <dtml-with "_[tsmonth]"> <dtml-call "Control_Panel.Products.Kendermedia.KMArticle_add(REQUEST)"> </dtml-with> </dtml-with> </dtml-with> <h2>Article submitted! Thanks!</h2> <dtml-var standard_html_footer> To recap, the error is a NameError... it is saying that it can't find KMArticle from within the KMArticle_add method. Kevin _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com

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RE: [Zope] Compiling Sybase module -- missing libtli.so, anybody have it? UR GENT! GENT!
by Alexander Staubo 23 Jul '99

23 Jul '99

It turns out that, at least for my installation, I have to replace -tli with -tinsck. If this isn't done, it won't find the bsd_tcp symbol. The installation instructions in src/INSTALL for putting ctsybasemodule in Modules\Setup are correct (note that it doesn't mention that you have to copy the source files (dbi.* and ctsybasemodule.*) into the Modules directory, this may confuse newbies). It seems you don't actually have to run make on in the src directory, as the ctsybasemodule must be recompiled as part of the Python module compilation anyway. Another curiosity: The compilation command line is _correct_ in src/INSTALL -- it refers to libinsck.so, not libtli.so -- but incorrect in the makefile (which does refer to libtli.so). Curiosities abound: If the connection open operation fails in db.py, it will report "Invalid connection string". For me, the module initially failed at line 182, and this had little to do with the connection string itself; it was Sybase denying access to the database, as I had not granted access to the specified user. Emitting the actual Sybase error tuple would have been better. I got the installation to work now, I *think*. :-) Thanks. -- Alexander Staubo http://www.mop.no/~alex/ "`This must be Thursday,' said Arthur to himself, sinking low over his beer, `I never could get the hang of Thursdays.'" --Douglas Adams, _The Hitchhiker's Guide to the Galaxy_ >-----Original Message----- >From: Brian Hooper [mailto:brian@garage.co.jp] >Sent: 23. juli 1999 17:45 >To: Alexander Staubo >Cc: zope(a)zope.org >Subject: Re: [Zope] Compiling Sybase module -- missing libtli.so, >anybody have it? UR GENT! GENT! > > >Try commenting out -ltli in Setup.in. This library doesn't >even seem to >be necessary for proper linking. > >--Brian > >Alexander Staubo <alex(a)mop.no> wrote: > >> Compiling ctsybasemodule.so (in the Zope Sybase module) I >get an error >> about libtli.so missing. If I exclude this library from the >compilation, >> ctsybasemodule.so complains about a missing bsd_tcp symbol. >> >> Funny thing is, the library isn't in the Sybase ASE 11.0.3 RPM >> distribution. >> >> If anybody has the file libtli.so, which supposedly comes with Sybase >> (under sybase/lib), could they send it to me asap? >> >> *Thank you!* :-) >> >> -- >> Alexander Staubo http://www.mop.no/~alex/ >> "`This must be Thursday,' said Arthur to himself, sinking low over >> his beer, `I never could get the hang of Thursdays.'" >> --Douglas Adams, _The Hitchhiker's Guide to the Galaxy_ >> >> _______________________________________________ >> Zope maillist - Zope(a)zope.org >> http://www.zope.org/mailman/listinfo/zope >> >> (To receive general Zope announcements, see: >> http://www.zope.org/mailman/listinfo/zope-announce >> >> For developer-specific issues, zope-dev(a)zope.org - >> http://www.zope.org/mailman/listinfo/zope-dev ) >> >

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Compiling Sybase module -- missing libtli.so, anybody have it? UR GENT! GENT!
by Alexander Staubo 23 Jul '99

23 Jul '99

Compiling ctsybasemodule.so (in the Zope Sybase module) I get an error about libtli.so missing. If I exclude this library from the compilation, ctsybasemodule.so complains about a missing bsd_tcp symbol. Funny thing is, the library isn't in the Sybase ASE 11.0.3 RPM distribution. If anybody has the file libtli.so, which supposedly comes with Sybase (under sybase/lib), could they send it to me asap? *Thank you!* :-) -- Alexander Staubo http://www.mop.no/~alex/ "`This must be Thursday,' said Arthur to himself, sinking low over his beer, `I never could get the hang of Thursdays.'" --Douglas Adams, _The Hitchhiker's Guide to the Galaxy_

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Problem with External Method Tutorial: Invisible Objects
by Stephen Pitts 23 Jul '99

23 Jul '99

Hi! I was running through the External Method Tutorial at http://www.zope.org/Documentation/Reference/ExternalMethods I created the addPlayHouse external method, and added it to a Zope folder called Test. I called addPlayHouse like this: http://orwell:9673/Test/addPlayHouse?id=myHouse. It told me that it had added the PlayHouse successfully, and my PlayHouse module had been compiled, so I'm assuming Zope imported it. However, when I try to access my PlayHouse at the URL http://orwell:9673/Test/myHouse, I get a "Resource Not Found" message. However, I can export myHouse to a file. and running 'strings' on that file gives me loads of references to "PlayHouse". My web server (orwell) is running Linux/x86 2.2.10 with Python 1.5.2 (the version packaged in Debian potato), and Zope 2.0a4. I'm running Zope with the command line "python z2.py -d 172.16.0.217", and I'm using ZDaemon (sp?), not Apache. Anyone have any suggestions? -- Stephen Pitts smpitts(a)midsouth.rr.com webmaster - http://www.mschess.org

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Help with Zope2 persistence?
by Joe Grace 23 Jul '99

23 Jul '99

Hi, I'm wondering if it's possible to use Zope persistence outside of Zope for testing. I copied the code from the Persistence section of http://www.zope.org/Documentation/Reference/ObjectPublishingIntro I also tried a variety of variations on BoboPOS.Persistent according to a comment recently made by Michel: Actually, Persistence.Persistent. BoboPOS will work but it's not 'the way'. It's legacy. So, I've gotten it to "from Persistence import Persistent" and to inherit, but I don't know what the correct invocation is to create the database. BoboPOS.PickleDictionary(), and Persistent.PickleDictionary() don't work. I've been perusing code for an example of something which seems to create a DB from scratch, but the only one I found I know this is a newbie question, but if someone has a complete sample code analogous to the following, I'd be very thankful for the insight. Ideally, it would work outside Zope (getting all the imports correct, if possible), but just working within Zope would be nice too. The "has_key" method seems to be a missing link too. That method doesn't seem to exist in the objects I was guessing were my DB objects. I'd like to know how to do that test using Zope2 code. (I hope this question makes sense.) Just looking for the basics. Thanks, = Joe = -=- Basic code fragment from docs follows: -=- # I'm assuming this changes to "import Persistent from Persistence" or somesuch? import BoboPOS # I'm assuming this changes to "class Person( Persistent):". class Person(BoboPOS.Persistent): "A persistent person" def __init__(self,name,age): self.name=name self.age=age # ??? What goes here? object_store=BoboPOS.PickleDictionary("people_store.db") # ??? Does object_store still use has_key to check for existence, or is there another method? if object_store.has_key("billy"): billy=object_store["billy"] else: billy=object_store["billy"]=Person("Billy",77) get_transaction().commit() print billy.name, billy.age

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RE: [Zope] Re: [Zope-dev] creating one ZClass instance in the con structor of another
by Brian Lloyd 23 Jul '99

23 Jul '99

> Hi, > > In some recent messages, there were people talking > about creating objects from within External Methods. > In there, after the createInObjectManager call, they > call a _setObject method (or something like that). > Unfortunately, we can't do that from DTML because it > starts with _. createInObjectManager is not used in conjunction with _setObject - createInObjectManager is intended to be used from a DTML method and encapsulates: o basic instantiation of the object, with the given id o doing a _setObject on the target ObjectManager with the new instance. > Maybe there is some piece missing that is need to > create these objects wherever you wish via DTML? > > Not to confuse the issue, but I've got a slightly > different situation and a slightly different problem > (but no luck, either :) > > I have two ZClasses: KMArticleStore and KMArticle. > There is a method within KMArticleStore that I would > like to use to create new KMArticles. > > I've tried a few variations to get this to work. Brian > (Lloyd)'s suggestion > <dtml-call > "Control_Panel.Products.Kendermedia.KMArticle_add(REQUEST)"> > > Yields a NameError (KMArticle), here: > Object: KMArticle.createInObjectManager(REQUEST['id'], > REQUEST) Eew - this sounds like it comes from the complexity of the acquisition that is going on. > > I did, at one point, manage to get the article added > to the Products part of the control panel :) that's not good :( > (I think by calling > Control_Panel.Products.Kendermedia.KMArticle.createInObjectManager > directly) > > Kevin Can you post the actual scripting that you're using? It's hard for me to narrow down what's going on without context... Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

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RE: [Zope] tag suggestions: format tag
by Jeffrey Shell 23 Jul '99

23 Jul '99

>  > > would be equivalent to > > Hello world > > And > >  You mean, *just* like the #var tag ? :) > would be equivalent to > >  I think a block-level flavor of #var (#block) may be interesting. WebObjects has this as a bonus luxury. .jPS

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