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problem with LDAPUserFolder 1.5b1
by Jerome Alet 24 Jun '02

24 Jun '02

Hi, I've installed openldap 2.0.23 on a server and a client and all seems to work fine (AFAICTAICTM) In Zope I've installed LDAPUserFolder 1.5b1 and I can see no group. I can see all users though. My users base DN is : ou=People,dc=my,dc=domain,dc=org My groups base DN is : ou=Group,dc=my,dc=domain,dc=org Both ZLDAPConnection and ZLDAPMethod seem to work ok. Since it's openlap and not Netscape's one I don't think the restictions mentionned in th README apply, but I really don't know much. any help appreciated. Jerome Alet

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Using Python Modules in Zope
by chpeer2002 24 Jun '02

24 Jun '02

For Python, there exists the module "NumPy" (Numerical Python) which provides good tools to manipulate arrays. I would like to use this in Zope as well for a Python Script. I tried to install it for the Zope's Python but I can't import the modules: E.g. from Numeric import array does not work, when I use this in a Python Script in Zope. Have you got any ideas? Thanks in advance! Chris

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Problems with QUERY_STRING
by Nico de Boer 24 Jun '02

24 Jun '02

Hi, I'm trying to do the following: First I split the QUERY_STRING variable and join it with dots: <dtml-let splitpath="_.string.split(QUERY_STRING,'/')" training="_.string.join(splitpath[1:],'.')"> So I get the following: training = path.to.training Then I want to get the attributes of the training with the dtml-with tag: <dtml-with "training"> <table cellpadding="3" cellspacing="0" border="0" width="100%"> <tr><td>Institute:</td><td><dtml-var institute></td></tr> <tr><td>Location:</td><td><dtml-var location></td></tr> <tr><td>Title training:</td><td><dtml-var title></td></tr> <tr><td>Start date:</td><td><dtml-var date_start></td></tr> <tr><td>Stop date:</td><td><dtml-var date_stop></td></tr> </table> </dtml-with> </dtml-let> Institute, location etc are attributes of my ZClass Training. The 'with' tag doesn't work; I get KeyErrors. Max M gave me the following solution: You can traverse Zope with a path from code directly. You must use the restrictedTraverse() method.. Asuming that: QUERY_STRING='path/to/training' You can just do it like: <dtml-call "REQUEST.set('training', getPhysicalRoot().restrictedTraverse(QUERY_STRING))"> <dtml.with training> ... etc. But the getPhysicalRoot() method gives me a NameError: NameError: global name 'getPhysicalRoot' is not defined and an AttributeError when I tried it like this: <dtml-call "REQUEST.set('training', PARENTS[1].getPhysicalRoot().restrictedTraverse(QUERY_STRING))"> So I tried the following: <dtml-call "REQUEST.set('training', ROOT().restrictedTraverse(QUERY_STRING))"> Where ROOT is a Python Script in the Root of Zope that does the following: return container But 'training' now is an <Application instance at 91b6bf0>. Can anyone help me with this problem? Greetz Nico

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To thread or not to thread ...
by Terry Hancock 24 Jun '02

24 Jun '02

Hi all, As yet another iteration in a very image intensive product, I'm trying to build a tree of images. They are generated procedurally, and may differ from installation to installation (they don't currently, but they probably will). So it's much more convenient to generate them procedurally in the manage_add<my-product>() function than to store them in, say, a .zexp file. (I also tried making them on-the- fly, but that's a whole 'nother story). Nevertheless, it takes quite awhile for PIL to chunk through all those images (currently 2880). If I just use a straight iteration, the browser will time-out during the installation process, which is kind of ugly, and will no doubt freak out my potential user/ administrator. Also, it's not absolutely clear to me that Zope won't cut me off somehow if my request takes too long. (Any reassurances/warnings on this point?). Alternatively, I can put components of the installation process into separate threads. This nicely drops me back into the management interface and runs the object-building process in the background. However, I then have to think about checking it to make sure it's done (probably I can handle this, though I haven't yet -- I just check it manually later). The big headache though, is that with the threaded version, I have folders disappear out of the management interface! If I wait long enough, eventually they just start to disappear. Same thing if I restart. So the persistence machinery must not be working in the threaded case. But why not? The code is essentially the same, except that in the non-threaded version I just call the function, whereas in the threaded version, I create a thread to run it with threading.Thread(). I do this at the highest level in the loop, which means about 4 threads should be started, which I wouldn't think would tax my system (an earlier version with about 50 threads did cause a massive slowdown). Both versions use ordinary 'Folder' objects and create them using the Zope API with manage_addFolder() calls on the parent folders. Should I abandon threading here? (and just document this in the INSTALL file). Should I use full-fledged processes? Or am I just forgetting to do something? (I've done almost no threaded programming before this -- I did run a threaded test version of this code that generated the files on the filesystem outside of Zope. All my tests with that version went fine.). Thanks in advance for any ideas, Terry -- ------------------------------------------------------ Terry Hancock hancock(a)anansispaceworks.com Anansi Spaceworks http://www.anansispaceworks.com P.O. Box 60583 Pasadena, CA 91116-6583 ------------------------------------------------------

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Should lambda method be legal or not?
by Terry Hancock 24 Jun '02

24 Jun '02

I ran across this limitation in part of a product design. Here I've reduced it to a kind of minimal case for illustration. I don't know whether to call it a bug or not, because I'm not sure it *should* be possible to do this. I'd be interested in opinions. If there's a consensus that its a bug I'll submit it to the collector, otherwise, I'll just be enlightened. :-) The code: #--------------------------------------------- # # MyFolder -- Test subclassing from Folder: # #--------------------------------------------- class MyFolder(OFS.Folder.Folder): """ MyFolder tests subclassing from folder. No special behaviors are defined. See Folder for expected behavior. """ meta_type='MyFolder' manage_addMyFolderForm=DTMLFile('dtml/myfolderAdd', globals()) def manage_addMyFolder(self, id, title='', REQUEST=None): """ Add a new Folder object with id *id*. User and public interface features have been removed. """ ob=MyFolder() ob.id=str(id) ob.title=title self._setObject(id, ob) ob=self._getOb(id) ob.mymethod = lambda: 2 if REQUEST is not None: return self.manage_main(self, REQUEST, update_menu=1) As you can see, this is an extremely simple case of subclassing from Folder. The only thing I've done is add a method "mymethod" which happens to be defined by an anonymous function (lambda). Obviously I would've used something less trivial than "2" in practice. Defined like this, I can add this object through the Zope management interface, and it behaves exactly as I would expect it to. Until I restart. Then, an attempt to view the contents of the folder containing MyFolder (i.e. not MyFolder itself, but its parent), yields the following traceback: Failed to import class from module __main__ Traceback (innermost last): File /usr/local/narya/z2.5.1/lib/python/ZPublisher/Publish.py, line 150, in publish_module File /usr/local/narya/z2.5.1/lib/python/ZPublisher/Publish.py, line 114, in publish File /usr/local/narya/z2.5.1/lib/python/Zope/__init__.py, line 159, in zpublisher_exception_hook (Object: Badge) File /usr/local/narya/z2.5.1/lib/python/ZPublisher/Publish.py, line 98, in publish File /usr/local/narya/z2.5.1/lib/python/ZPublisher/mapply.py, line 88, in mapply (Object: manage_main) File /usr/local/narya/z2.5.1/lib/python/ZPublisher/Publish.py, line 39, in call_object (Object: manage_main) File /usr/local/narya/z2.5.1/lib/python/Shared/DC/Scripts/Bindings.py, line 252, in __call__ (Object: manage_main) File /usr/local/narya/z2.5.1/lib/python/Shared/DC/Scripts/Bindings.py, line 283, in _bindAndExec (Object: manage_main) File /usr/local/narya/z2.5.1/lib/python/App/special_dtml.py, line 172, in _exec (Object: manage_main) File /usr/local/narya/z2.5.1/lib/python/DocumentTemplate/DT_In.py, line 637, in renderwob (Object: objectItems) File /usr/local/narya/z2.5.1/lib/python/DocumentTemplate/DT_In.py, line 763, in sort_sequence (Object: objectItems) File /usr/local/narya/z2.5.1/lib/python/ZODB/Connection.py, line 472, in setstate SystemError: (see above) The solution is simple enough -- remove the anonymous function and replace it with a real function: def mymethod_function(): "My Method" return 2 and replace the method assignment with: ob.mymethod = mymethod_function (it can also be a callable class -- which is the actual reason for not just defining it in place. In my reduced example, it's sort of contrived). I note also that lambda doesn't appear to have any way to assign the docstring required by Zope for publishing, so maybe that in itself is reason enough not to do this. In my original problem, lambda seemed to be a useful tool, since the result was a trivial case (other functions used a more complex callable class, but I just put in a lambda for the trivial case). Clearly, I'm just going to avoid using lambda like this in the future, but should I have been able to? It seems kind of fuzzy to me either way, so I'd be interested in the reasoning either way. Thanks, Terry -- ------------------------------------------------------ Terry Hancock hancock(a)anansispaceworks.com Anansi Spaceworks http://www.anansispaceworks.com P.O. Box 60583 Pasadena, CA 91116-6583 ------------------------------------------------------

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Publishing pure HTML
by Dennis Allison 24 Jun '02

24 Jun '02

I have a fairly large site with lots of images ( >10,000) that I want to publish in a CMF/Plone environment. It's a requirement that the HTML stuff be available in a file system and incrementally mutable. Moreover, the link structure should not be changed so the site can be run standalone as well as integrated into a Zope wrapper. Finally, parts of the the HTML site need to be renderable inside Zope objects. The ExternalFile Product gets me part of the way there but there are pproblems becasue it works with wrappers and mimics DTML publication. Every reference file needs a wrapper. Files are treated as if they were DTML Documents, Images, or whatever. But they are still processed as if they contained dynamic content.

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Zclass and Permissions: Delete Instances?
by wchr 24 Jun '02

24 Jun '02

hi@all, ok - there is an "Add ***" permission mapped to "Create class instances" per default. i also know how to create a new custom permission in the product´s folder, how to add it to the zclass "Class Permission" and how to map a zclass-propertysheet´s "Manage properties" permission to my custom permission. but is there also a possibility to map the "Delete Objects" permission regarding a certain zclass to a custom permission? /wolfie -- http://www.t0.or.at

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RE: [Zope] CST vs Zope Sessions
by Schmidt, Allen J. 24 Jun '02

24 Jun '02

Have not looked recently, but are there any 'hand-holding' guides to the very basic "Hello World" steps in setting up the new sessioning stuff? We use SQLSession and was wondering how close they are in syntax and how much we will have to change for the new stuff. Also, can the two be used together?? Thanks -Allen -----Original Message----- From: Robert Rottermann [mailto:robert@redcor.ch] Sent: Monday, June 24, 2002 1:49 PM To: Aseem Mohanty; zope(a)zope.org Subject: Re: [Zope] CST vs Zope Sessions CST was superseded by Zope's own session tracking (which is based on CST) Robert ----- Original Message ----- From: "Aseem Mohanty" <aseem(a)neurobehavioralsystems.com> To: <zope(a)zope.org> Sent: Monday, June 24, 2002 7:33 AM Subject: [Zope] CST vs Zope Sessions > Hi all, > Can anybody provide me with reasons as to why or why shouldnt I use CST > as compared to the session product that comes with Zope 2.5.x?? > > On my part I found that CST was a little easier to use and gave me more > flexible and simpler interface.(just from an initial attempt at trying > out both) > > Platform: Zope 2.5.0 (binary release, python 2.1, win32-x86), python > 2.1.2, win32 to be migrated to RH 7.2 > > Knowledge level: > Zope : 4/10 > DTML : 5-6/10 (not very polished but can get the job done) > Python : 4-5/10 (sure as hell hope so!!) > Writing products : Cant say, I was able to modify mysqluserfolder > (removed sessions and cookies and used Cookie Crumbler and CST... hence > the question) to my own needs and it works but has some glitches > (regarding roles) I hope to fix at some point of time. I know how to > write a basic product but user folders seem (at least to me) to involve > a bit more complexity. > > TIA > AM > > -- > ================================================================== > Aseem Mohanty > Neurobehavioral Systems Inc, 828 San Pablo Ave, Albany, CA 94706 > (R) 510 7696011 (M) 510 3014871 (O) 510 5279231 > ================================================================== > "I saw `cout' being shifted "Hello world" times to the left and > stopped right there!!" -- Steve Gonedes > ================================================================== > > > > > _______________________________________________ > Zope maillist - Zope(a)zope.org > 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 maillist - Zope(a)zope.org 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 )

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CST vs Zope Sessions
by Aseem Mohanty 24 Jun '02

24 Jun '02

Hi all, Can anybody provide me with reasons as to why or why shouldnt I use CST as compared to the session product that comes with Zope 2.5.x?? On my part I found that CST was a little easier to use and gave me more flexible and simpler interface.(just from an initial attempt at trying out both) Platform: Zope 2.5.0 (binary release, python 2.1, win32-x86), python 2.1.2, win32 to be migrated to RH 7.2 Knowledge level: Zope : 4/10 DTML : 5-6/10 (not very polished but can get the job done) Python : 4-5/10 (sure as hell hope so!!) Writing products : Cant say, I was able to modify mysqluserfolder (removed sessions and cookies and used Cookie Crumbler and CST... hence the question) to my own needs and it works but has some glitches (regarding roles) I hope to fix at some point of time. I know how to write a basic product but user folders seem (at least to me) to involve a bit more complexity. TIA AM -- ================================================================== Aseem Mohanty Neurobehavioral Systems Inc, 828 San Pablo Ave, Albany, CA 94706 (R) 510 7696011 (M) 510 3014871 (O) 510 5279231 ================================================================== "I saw `cout' being shifted "Hello world" times to the left and stopped right there!!" -- Steve Gonedes ==================================================================

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Problems with GET method
by Nico de Boer 24 Jun '02

24 Jun '02

Hi, I'm working on a ZClass for Trainings. The visitors of the site have to be able to fill in a form online to join a training. At top of the form there is first shown some information about the training. I want to show this info with the GET method of a hyperlink. Like this: <a href="/form/main?<dtml-var PATH_INFO>" methods="GET">Online sign-up</a> The following thing to do is split the PATH_INFO variable and join it with dots: <dtml-let splitpath="_.string.split(QUERY_STRING,'/')" training="_.string.join(splitpath[1:],'.')"> Then I want to get the attributes of the training with the dtml-with tag: <dtml-with "training"> <table cellpadding="3" cellspacing="0" border="0" width="100%"> <tr><td>Institute:</td><td><dtml-var institute></td></tr> <tr><td>Location:</td><td><dtml-var location></td></tr> <tr><td>Title training:</td><td><dtml-var title></td></tr> <tr><td>Start date:</td><td><dtml-var date_start></td></tr> <tr><td>Stop date:</td><td><dtml-var date_stop></td></tr> </table> </dtml-with> </dtml-let> Institute, location etc are attributes of the ZClass Training. The 'with' tag doesn't work; I get KeyErrors. Can somebody help me? Greetz Nico

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