- Zope-Dev - Zope lists

Questions for ZOPE gods: Acquisition, etc.
by Andreas Kostyrka 22 Jul '99

22 Jul '99

Hi! I've been poking around in the 2.0.0a4 sources to allow subsiting (Folder in existing Zope + Domainname == Subsite ;) ), and I've developed some questions, that probably not many people will be able to answer: -) Is there anywhere documentation about Acquisition? How exactly is it intended to be used, etc. I've been reading the source code, so I think I'm breaking the Acquisition chain the right way at the subsite level, but thinking and knowing are different words. ;) -) I've actually done the ZPublisher subsite patch twice, and in both cases (dirty and the newer almost clean version), I get permission denied problems for my subsite folder. Now, after looking at the Application object and the Subfolder object, I'm getting the impression that a Folder cannot be the toplevel folder of a Zope database, right? Andreas -- Win95: n., A huge annoying boot virus that causes random spontaneous system crashes, usually just before saving a massive project. Easily cured by UNIX. See also MS-DOS, IBM-DOS, DR-DOS, Win 3.x, Win98.

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Re: [Zope-dev] ZOPE 2.0.0a4 INSTANCE_HOME/Products bug?
by Martijn Pieters 22 Jul '99

22 Jul '99

At 12:40 22/07/99 , Andreas Kostyrka wrote: >Hi! > >I've been wondering, if I'm doing something wrong: >-) I've created a lib/python/Products directory in my INSTANCE_HOME. >-) I've unpacked the Navigation-0.0.4.tar.gz, ZPyGreSQL-DA, etc. >-) All products show up in the control panel as loaded without problems. >BUT: >-) the navigate_filter method from Navigation is not found. >-) PostgreSQL database connection objects are displayed as broken: > kundendb (This object from the ZPyGreSQLDA product > is broken!) > >Now if I move the Products to the SOFTWARE_HOME >(Zope-2.0.0a4-src/lib/python/Products/*), all works well, so this smells >like a bug. >I'm using a RH5 Linux/intel with Python 1.5.2. > >External methods by the way work from the INSTANCE_HOME. :) Broken products have a 'Traceback' tab. What is displayed there? -- 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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ZOPE 2.0.0a4 INSTANCE_HOME/Products bug?
by Andreas Kostyrka 22 Jul '99

22 Jul '99

Hi! I've been wondering, if I'm doing something wrong: -) I've created a lib/python/Products directory in my INSTANCE_HOME. -) I've unpacked the Navigation-0.0.4.tar.gz, ZPyGreSQL-DA, etc. -) All products show up in the control panel as loaded without problems. BUT: -) the navigate_filter method from Navigation is not found. -) PostgreSQL database connection objects are displayed as broken: kundendb (This object from the ZPyGreSQLDA product is broken!) Now if I move the Products to the SOFTWARE_HOME (Zope-2.0.0a4-src/lib/python/Products/*), all works well, so this smells like a bug. I'm using a RH5 Linux/intel with Python 1.5.2. External methods by the way work from the INSTANCE_HOME. :) Andreas -- Win95: n., A huge annoying boot virus that causes random spontaneous system crashes, usually just before saving a massive project. Easily cured by UNIX. See also MS-DOS, IBM-DOS, DR-DOS, Win 3.x, Win98.

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creating one ZClass instance in the constructor of another
by Brian Hooper 22 Jul '99

22 Jul '99

Hi Zopistas - This is probably a really easy one, but I was wondering if anyone knows how to create an instance of one ZClass inside the constructor of a different ZClass. To illustrate with an example: I have defined two ZClasses, a ProjectManager and a GuestBook (I reimplemented the old Guestbook example product using ZClasses) as separate Products (since they are not really intrinsically related). I want to use the GuestBook in the ProjectManager, but I can't figure out how to create the GuestBook in the ProjectManager's constructor. I want to do something like  in the ProjectManager_add method; however, since the other Product's names don't seem to be defined in the namespace of ProjectManager_add, this doesn't work. Can anyone please tell me the magical solution to this problem? --Brian Hooper Digital Garage, Inc.

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ZClass inheriting from Python Class
by Martijn Faassen 22 Jul '99

22 Jul '99

Hi everybody, I've been toying with ZClasses. I made a simple Python class and registered it with Zope as mentioned in the ZClass tutorial. Then I made a ZClass that inherits from this Python class. I store some text data in a list in the ZClass. This works fine, except when I restart Zope; the data in the list is gone. Apparently the mixin Python class is not automatically persistent. Is this what should happen? What do I do about it? Regards, Martijn

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Type in Aqueduct.py
by Brian Lenihan 21 Jul '99

21 Jul '99

I came across a typo in line 366 of Aqueduct.py: --- Aqueduct.py Wed Jul 21 10:37:23 1999 +++ Aqueduct.py.orig Fri Jul 16 17:29:07 1999 @@ -366,7 +366,7 @@ l=len(grps[0]) else: ts_results = unparmre.match_group(text, (1,2)) - if ts_reults: + if ts_results: start, grps = ts_results name=grps[1] l=len(grps[0]) It is still in the frozen public cvs. I didn't notice it until I tried to add a new SQL method. It took some head scratching to figure out my SQL method was actually OK. I finally tried editing an existing method and got the same error.

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getpath not working
by Jason Spisak 21 Jul '99

21 Jul '99

Michel, <a href="/"> works fine inside the Catalog folder, but outside the folder even using  I get this traceback: Error Type: AttributeError Error Value: getpath  Is there another way of getting the url of the object you want for a link? All my best, Jason Spisak webmaster(a)mtear.com

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Catalog uniqueValuesFor
by Jason Spisak 21 Jul '99

21 Jul '99

Michel, The uniqueValuesFor in a select box is giving me just the first letter of the indexed values. Can you recreate this? For example: <SELECT NAME="company_city" size="5" MULTIPLE>  <OPTION VALUE="">  </OPTION>  </SELECT> gives me: <SELECT NAME="company_city" size="5" MULTIPLE> <OPTION VALUE=""> </OPTION> <OPTION VALUE="L"> L </OPTION> </SELECT> I only have one object with the copany_city indexed right now and it's properties shows the full name "Los Angeles". I'll submit this to the collector if you can reproduce it. Best wishes, Jason Spisak webmaster(a)mtear.com

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ANNOUNCE: Zope/XML Roadmap
by Amos Latteier 21 Jul '99

21 Jul '99

Fellow Zopistas, A number of community members have been discussing XML in Zope and some folks have actually released Zope/XML products. Go team! In the next couple days Digital Creations is going to release an alpha of an XML Document object, and I want to take this opportunity to let you know about it, and summarize what our XML plans are. -- XML Document Product alpha What started as a hack while sitting around Paul Everitt's kitchen has become useful enough to release. XML Document is a Zope product which will provide support for handling XML objects in Zopish ways. We plan on releasing the first alpha before the end of the week. It will be an unsupported product and will not be an official part of Zope 2. What is it? XML Document is a Zope product that allows you to use xml objects in Zope which expose their internal structure in a Zopish way. You can, * Format xml objects with DTML, you can even use the tree tag with xml objects. * Publish xml elements via URL traversal. XML elements work like normal Zope objects so for example, they can acquire DTML methods for display. * Edit xml objects using the management interface. XML Documents allow you to edit sub-elements individually if you wish. * Query xml objects using the DOM API. * Catalog xml objects. You can catalog XML Documents, and even individual elements in a document. * Create very large documents. Since elements are normal persistent objects, Zope does not always need to keep the entire DOM in memory. More information will be available when it is released. And now on to a more broad look at what we're planning. Please note that these are merely plans, not promises to deliver. We are serious about welcoming feedback and participation from the community, and don't wish to preempt any work others are doing. We just want to let you know what we're thinking about, and ask for comments. -- Zope and XML Roadmap This is summary Zope/XML activities and plans. What's available now? XML Development XML Document Product (available soon) XML Document is a Zope product that allows you to use xml objects in Zope which expose their internal structure in a Zopish way. XML Document provides fairly generic support for XML, and can be subclassed using ZClasses to build more specific XML applications. XML Document is currently an alpha quality, unsupported Zope Product. XML-SIG xml package Python has excellent XML support which is developed and maintained by the XML-SIG. While Zope does not come with this package, you can use it with Zope by either installing normally with the Python you use to run Zope, or installing it in 'lib/python1.5' if you are using a binary Zope installation. The xml package gives you access to a wide range of tools which you can use to develop XML applications via External Methods or Zope Products. You can even build ZClass base classes in Python which use the xml package and then create ZClasses through the web. http://www.python.org/sigs/xml-sig/ XML-based Standards Support WebDAV support Zope supports remote content management through the WebDAV protocol. http://webdav.zope.org/ XML-RPC In addition to Zope's native URL to method conversion, it supports XML-RPC. This support is built into the Zope ORB. http://www.xml-rpc.com/ Where is XML support in Zope going? There's no telling where the energetic Zope community will take Zope, but here is a tentative plan for what Digital Creations hopes to do. DOM support for Zope objects Work is underway to add DOM methods to standard Zope objects (aka SimpleItems and ObjectManagers) This will essentially make the Zope object hierarchy available as though it were a large XML document. At first the DOM support will be read-only, with DOM methods to manipulate the Zope object hierarchy coming later. It may make sense to change the Zope management interface some to make it more congruent with the DOM. For example, right now there is now way to explicitly re-order child objects within Folders using the management interface. http://www.w3.org/TR/REC-DOM-Level-1/ XSL as an object query language for Zope Once Zope objects support read-only DOM methods it should be fairly simple to allow Zope to be queried with the pattern subset of XSL. We plan to use an existing xsl implementation, rather than write our own. http://www.w3.org/TR/WD-xsl/ Further refinement of XML Document Product The XML Document needs a lot of work, * Verify that the DOM implementation is fairly complete and correct. * Start using the forthcoming version of pyexpat which will allow more complete parsing, including comment nodes. * Add PUT and FTP support to allow remote editing of XML. * Improve performance. In the longer run plans include, * Provide an ability to bind ZClasses to specific Element types. This is similar to ZSQL Method's notion of brains. * More completely support Zope management and object protocols. * Provide XML validation services. I think that Zope is going to turn out to be a very exciting platform for XML work. -Amos -- Amos Latteier mailto:amos@digicool.com Digital Creations http://www.digicool.com

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Zmake clarifications
by Anthony Pfrunder 20 Jul '99

20 Jul '99

Hi, Just to answer a few questions I have been asked, * Zmake can automagically compile ALL setup files, so, if you wish to rebuild PiL, just add it to the ZExtensions rule * Zmake has been updated, I just forgot to annouce it ;) * The mingw32 problem has been fixed, it was a bug in Window's implementation of spawnvc Cheers, Anthony Pfrunder Computer Systems Engineering University of Queensland

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