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RE: [Zope] Zcatalog and PrincipiaSearchSource with Zclasses ?
by Martijn Pieters 23 Oct '99

23 Oct '99

At 17:43 21/10/99 , Michel Pelletier wrote: >Sure, why not just impliment a DTML Method in your ZClass called >PrincipiaSearchSource that returns what you want indexed? > ><dtml-return "title + author + body"> This won't work, because you can't index on the result of a DTML Method. The DTML Method doesn't get called with the usual client and REQUEST objects, so the method has no means of obtaining the title, author and body parameters. You can do it with an External Method: def AllField(self) return self.title + self.author + self.body or you could make a property on you object that on every update gets filled with the contents of title + author + body. -- Martijn Pieters, Web Developer | Antraciet http://www.antraciet.nl | Tel: +31-35-7502100 Fax: +31-35-7502111 | mailto:mj@antraciet.nl http://www.antraciet.nl/~mj | PGP: http://wwwkeys.nl.pgp.net:11371/pks/lookup?op=get&search=0xA8A32149 ------------------------------------------

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displaying headlines
by Tim Wilson 23 Oct '99

23 Oct '99

Hi everyone, Has anyone developed a product that allows you to display current headlines from AP, CNN, or some other source on a Zope site? If not, does anyone know of a news source that makes its headlines available in some easily parsable form so that I can do it myself? One of our two local papers (Minneapolis Star Tribune) gave me permission to do it, but I would have to dig them out of their homepage. I'd appreciate any ideas anyone would like to share. -Tim -- Timothy Wilson | "The faster you | Check out: Henry Sibley H.S. | go, the shorter | http://slashdot.org/ W. St. Paul, MN, USA | you are." | http://linux.com/ wilson(a)chem.umn.edu | -Einstein | http://www.mn-linux.org/

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DTML Namespace confusion
by Abigail Montero 23 Oct '99

23 Oct '99

Hi all, After reading the DTML namespace how-tos, I have to admit that I'm still somewhat confused by it -- especially on how to call another DTML method from another DTML method and pass the namespaces from one to another. I know this is probably a question that's been asked before, but after searching through all archives and Zope documentation, I haven't found a solution :(. For example, I have this simple folder structure: /myFolder (folder) /index_html (dtml method) /render_item (dtml method) where render_item is called by index_html several times but with slightly different parameters. I've been able to make it work by doing a call to "REQUEST.set" and set my input parameters accordingly like this (index_html): ... <dtml-if "some_condition"> <dtml-call "REQUEST.set('input_var1','value1')"> <dtml-else> <dtml-call "REQUEST.set('input_var1','value2')"> </dtml-if> <dtml-var render_item> ... But what I would really like to do is this: <dtml-if "some_condition"> <dtml-var "render_item(_,_.None,REQUEST,input_var1='value1')"> <dtml-else> <dtml-var "render_item(_,_.None,REQUEST,input_var1='value2')"> </dtml-if> I've tried the code above (this is something that I've seen in the archives) but it gives me back an error about the title key error(a property in myFolder) which is the first dtml variable displayed on render_item: ....<snip> Error Type: KeyError Error Value: title ...<snip> File C:\myzope.com\lib\python\DocumentTemplate\DT_Util.py, line 321, in eval (Object: render_item(_, _.None, REQUEST, render_format='default' )) File <string>, line 0, in ? ...<snip> So my question is: What are the (????) parameters make that make an exact equivalent (namespace stack-wise) of calling this: <dtml-var render_item> in terms of this?: <dtml-var "render_item(?????)"> And can I tack on my own namespace by passing it my own variables like this?: <dtml-var "render_item(?????,input_var1='input_value1')"> Hope my question is clear enough for an answer. TIA, Abigail Montero abimontero(a)apexmail.com ____________________________________ Email services provided by ApexMail http://www.apexmail.com

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AttributeError .. __call__
by Oliver Frommel 23 Oct '99

23 Oct '99

Hello, just as I thought that I had understood the acquisition concept (and successfully created some methods that do what I want) I encountered another problem: for testing i have the following infrastructure: /site/programm/index_html /show_vars (DTML Doc.) show_vars: Folder: <dtml-var title> <dtml-in "programm.objectValues(['DTML Document'])"> DTML Document: <dtml-var title_or_id> </dtml-in> or <dtml-with programm> Folder: <dtml-var title> <dtml-in "objectValues(['DTML Document'])"> DTML Document: <dtml-var title_or_id> </dtml-in> </dtml-with> now the request "http://localhost:8080/site/show_vars" works but http://localhost:8080/site/programm/show_vars doesn't. I thought that the second request would acquire the namespace of its parents, namely "/site/" and thus be able to find the requested object. (as it does with the "show_vars" object) However I get this error: Error Type: AttributeError Error Value: __call__ ... what am I doing wrong this time? Oliver

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Re: [Zope] Using ZODB outside of Zope
by Avus 22 Oct '99

22 Oct '99

Terrel Shumway <tshumway(a)ics.uci.edu> wrote: > Avus wrote: > > > Hi, > > > > he ZODB would be a possible choice for a desktop database. > > Could anyone point me to code examples (if there are any) to use ZODB and > > Catalog outside of Zope? > > > > Is there any effort underway to make C/C++ bindings (i.e. to allow C++ classes > > to be stored persistently in a transparent manner)? > > > > Try these: > > http://www.zope.org/Members/michel/HowTos/ZODB-How-To > http://www.zope.org/Documentation/Developer/Models/ZODB > http://www.zope.org/Documentation/How-To/ZCatalogTutorial > The UML models are useful, thanks. The ZCatalog Tutorial seems to be more marketing oriented, with some DTML thrown in. I'd like to know if someone has example code in python, how to use ZODB and Catalog in applications not directly working within the Zope framework, e.g. storing and cataloging XML documents. > ZODB existed for a long time as Bobo before Zope was born. > > I imagine that you could use ZODB for C++ if you could come up with a Pickle > (serialization) protocol, but that might be more work than it is worth. Depending > on your application, and your legacy code; however, you might consider using Python > instead of C++. See: I'm not talking about legacy code, rather a db backend for real desktop applications. Transparent persistent storage of C++ objects would be nice, but examples how to store/catalog structured formats like XML would be a good start. Avus ____________________________________________________________________ Get your own FREE, personal Netscape WebMail account today at http://webmail.netscape.com.

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Re: [Zope] Zope,Python,Corba - which way to go
by Jeff Rush 22 Oct '99

22 Oct '99

On Fri, 22 Oct 1999 14:45:33 +0200, Marco Stipek wrote: >I'm currently working on a project, which requires to have access to a >Corba ORB (currently Fnorb is used). >Does anyone played a little bit with Corba, Python and Zope? I have played a little with Fnorb + Zope, creating a product called ZCorbaIF. Your provide an Naming Service URL when you create an instance of it, and it makes the methods of that CORBA object available to Zope. It is modeled after the ZSQL stuff, but is not usable in a general fashion yet. It's little more than a proto-toy right now. >My following Questions are not completely answered for me yet: >a) How to handle the Corbaclient in a multi threaded environment. Fnorb supports multi-threaded clients and servers, if you select the Threading model in it's configuration file (or cmdline option). >b) I think it's a bad Idea to use an Extension Method. Thus every >Clientrequest leads to the same process of getting the ref and than >getting an object handle throughout a factory. If I understand right >ZClasses and Products are initialized at Zope server start time. Then >I think is best to use them for doing the initial Job (getting >references) and presenting them through a well defined Interface. Perhaps this is what you are referring to, but you can copy the client interface .py files that Fnorb generates into the Zope Extension directory ($SOFTWARE_HOME/Extensions or $INSTANCE_HOME/Extensions) and invoke the CORBA methods that way. You would store the stringified object ref as persistent data in your Zope object, and then convert it to an object handle each time -- this is not that slow as it does not involve a network call -- the stringified form is just unpacked and turned into a (host, port, obj) instance. This works but is not my preferred way, long term. >c) How exactly is the life circle of: > - Product Objects > - External Method Objects > - ZClasses > >Maybe you have some hints or links for me, or could something tell >about your own experiences. The -true- solution to this is to write a proper Zope Connector. While Zope comes with an SQL one, it does support the creation of others. The sharing of a CORBA object reference across multiple threads is the kind of thing Zope Connectors are designed for, just as they share an SQL database session across Zope threads. However, (A) how to do so is not (yet) documented and (B) as I understand from Michel Pelletier, the connector architecture is undergoing major redesign with their client-paid work to *efficiently* multithread and support sub-transactions for the Sysbase SQL API. (A) doesn't stop me but because of (B) I've set my CORBA work aside for a couple of months, to let things develop in this area. Zope is still quite new and has plenty of gaps just waiting to be filled. That is the excitement of it. But considering that my core accounting system is CORBA and Bobo (old ZPublisher) based, CORBA support in Zope is very important to me so that I can migrate my financial apps into Zope, therefore a seamless CORBA (Z)Product will be forthcoming, probably in December. -Jeff Rush

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RE: [Zope] Could someone translate the debugging information?
by Michel Pelletier 22 Oct '99

22 Oct '99

> -----Original Message----- > From: VanL [mailto:van_lindberg@byu.edu] > Sent: Friday, October 22, 1999 3:02 PM > To: zope(a)zope.org > Subject: [Zope] Could someone translate the debugging information? > > I just compiled zope 2.01 from source on FreeBSD 3.3. No errors while > compiling, but on startup, I get: > > Traceback (innermost last) > socket.error: (49, "Can't assign requested address") > > It looks to me like it can't associate the IP address with the > hostname.byu.edu. Close, but what it actually can't assign is the socket for the monitor interface, which is not necessary to run zope. This might be a FBSD issue, or you might actually have something by chance listening on the same port (by default, 8099) that the monitor listens to. To just get it running, edit the start script to not run the monitor by specifiying the "-m ''" argument (that's dash-m with a pair of empty single quotes). You'll probably never use the monitor anyway, but this will get you started. -Michel

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Squishdot site down?
by srl 22 Oct '99

22 Oct '99

Hi all, delurking: So I just installed Zope yesterday, and I've been playing with Squishdot. I wanna join the mailing list(s) about Squishdot. Unfortunately, squishdot.org seems to be down--- has been for at least 18 hours. Can anyone verify that it really is or isn't down? srl

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Could someone translate the debugging information?
by VanL 22 Oct '99

22 Oct '99

I just compiled zope 2.01 from source on FreeBSD 3.3. No errors while compiling, but on startup, I get: Traceback (innermost last) file "/usr/local/share/zope/z2.py", line 471, in ? port=MONITOR_PORT file "/usr/local/share/zope/ZServer/medusa/monitor.py", line 264, in __init__ monitor_server.__init__(self, hostname,port) file "/usr/local/share/zope/Zserver/medusa/monitor.py", line 168, in __init__ self.bind ((hostname,port)) file "/usr/local/share/zope/ZServer/medusa/asyncore.py", line 205, in bind return self.socket.bind (addr) socket.error: (49, "Can't assign requested address") It looks to me like it can't associate the IP address with the hostname.byu.edu. Admittedly, this is a local server, but its IP is registered with the local DNS. Any help? Thnx, VanL

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ZClass permissions problem
by Tres Seaver 22 Oct '99

22 Oct '99

While attempting to test the add form for a ZClass, in a container ZClass for which my effective roles are [ 'Manager', 'Owner' ], I get the following error: <H2>Zope Error</H2> Zope has encountered an error while publishing this resource. Unauthorized You are not authorized to access FCCS_Request. <!-- Traceback (innermost last): File /home/zope/Zope-2.0.1-linux2-x86/lib/python/ZPublisher/Publish.py, line 214, in publish_module File /home/zope/Zope-2.0.1-linux2-x86/lib/python/ZPublisher/Publish.py, line 179, in publish File /home/zope/Zope-2.0.1-linux2-x86/lib/python/ZPublisher/Publish.py, line 165, in publish File /home/zope/Zope-2.0.1-linux2-x86/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: FCCS_Request_add) File /home/zope/Zope-2.0.1-linux2-x86/lib/python/ZPublisher/Publish.py, line 102, in call_object (Object: FCCS_Request_add) File /home/zope/Zope-2.0.1-linux2-x86/lib/python/OFS/DTMLMethod.py, line 145, in __call__ (Object: FCCS_Request_add) File /home/zope/Zope-2.0.1-linux2-x86/lib/python/DocumentTemplate/DT_String.py, line 502, in __call__ (Object: FCCS_Request_add) File /home/zope/Zope-2.0.1-linux2-x86/lib/python/DocumentTemplate/DT_With.py, line 133, in render (Object: FCCS_Request.createInObjectManager(REQUEST['id'], REQUEST)) File /home/zope/Zope-2.0.1-linux2-x86/lib/python/DocumentTemplate/DT_Util.py, line 315, in eval (Object: FCCS_Request.createInObjectManager(REQUEST['id'], REQUEST)) Unauthorized: (see above) Obviously, I screwed up the permissions -- any clues as to where? The manage_access page for the container ZClass shows the "Add FCCS_Request" permission as both acquired and checked for the Manager role. Clues: * This problem continues even if I comment out the guts of the dtml-with block (so I am assuming that it is related to the FCCS_Request.createInObjectManager() call, and not one of the nested calls. * FCCS_Request is fairly deeply nested in the Product, as follows: FCCS_Root (ObjectManager, ZCatalog) FCCS_Requestor (CatalogAware, ObjectManager) FCCS_Request (CatalogAware, ObjectManager) FCCS_Respondent (CatalogAware) I am trying to create a FCCS_Request inside a FCCS_Requestor. TIA! Tres. -- ========================================================= Tres Seaver tseaver(a)palladion.com 713-523-6582 Palladion Software http://www.palladion.com

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