February 2001 - Zope-Dev

Error message traceback
by Philipp von Weitershausen 23 Feb '01

23 Feb '01

Hi there, how do I turn off this annoying traceback that is always printed out when an error occurrs? -- Philipp von Weitershausen [ *pronounce: "fun Viters-houzen" ] Web http://www.philikon.de/

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What's the use of defining permissions for ZClass definition
by Dirksen 23 Feb '01

23 Feb '01

Hi, ZClass definition has a 'Define Permissions' tab. Yet any modification there doesn't seem to affect the ZClass instance's security profile at all. What's the use of that? Cheers Dirksen __________________________________________________ Do You Yahoo!? Yahoo! Auctions - Buy the things you want at great prices! http://auctions.yahoo.com/

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Re: [Zope-dev] Setting vars in expression eval() namespace
by Dieter Maurer 22 Feb '01

22 Feb '01

Julio Maia writes: > I'm trying to create a tag to evaluate the expression passed to it, adding in the expression eval namespace a variable that contains the result of dtml processing of the tag's block. For instance, the following construct: > > <dtml-bvar "foo(a=1)" var="block"> > some text <dtml-var "1+2"> > </dtml-bvar> > > would invoke the expression "foo(a=1)" with a variable named 'block' set to 'some text 3' in the expression's namespace (btw, is it possible to achieve this using regular dtml?). What a construction! I do not like it. > However, I couldn't find a way to set a variable in the namespace used in the evaluation of the expression. I've tried to insert an entry in the mappings passed to the expression eval() method as follows: Push a new mapping onto the namespace (with its "push" method). Do not forget, to pop it after your tag. Dieter

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Re: [Zope-dev] ZCatalog Lazy Results
by Dieter Maurer 22 Feb '01

22 Feb '01

Tres Seaver writes: > 'getObject' forces you to "wake up" the catalogued object; > in a large enough result set, the price is pretty punitive, > compared to serving the results as cached metadata. You can batch large result sets: "getObject" would just be applied to the objects in the batch. The objects are cached, too (ZODB cache). Dieter

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initializing objects in ZPatterns
by cs＠comlounge.net 22 Feb '01

22 Feb '01

Hi! I just encountered another problem with ZPatterns (well not exactly with ZPatterns but the way I use it.. ;-) I have some Specialist with a normal rack which stores data persistently in the ZODB. Everytime I am creating a new object I want to create an object of another specialist on the fly and store it's id inside my first object. Thus I have setup a SkinScript with the following content: INITIALIZE OBJECT WITH company_address=addresses.createAddress() WITH addresses.getItem(self.company_address) COMPUTE company_addr=RESULT STORE company_address IN SELF The createAddress is called actually and it returns the ID of the new object (thus the object is created). Unfortunately the id is not stored inside company_address. After reading the new object again this value is still empty (and thus also no address object is return by the address specialist). Same happens when just using some dummy property and filling it with a fixed string. This also disappears.. So what do I have to do to get it stored? (the other data which is handled via the default plugins is stored and all the attributes are defined inside the ZClass..) Hope, anyone knows how this might be fixed.. regards, Christian -- COM.lounge http://comlounge.net/ communication & design info(a)comlounge.net

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Storing part of an object on the file system
by Andy McKay 22 Feb '01

22 Feb '01

Ok whack idea #34... Well sort of, the idea was sparked by ExtFile (yes its all his fault honest). We want to have files on the file system for many reasons which I won't go into now, just take it for granted. But we also want some of the objects information to be in the standard data.fs, so we can catalog it use acquisition provide a simple interface to it and so on. So far you are saying thats ExtFile and you are right. But we want to extend it to any object anywhere, instead of storing the data attribute in the object and pickling it in the ZODB I want to be able to store the data attribute on the file system. This gives us loads of advantages we also thought this would be extremely useful to other people. We've bounced around ideas on how to do this and here the only two so far: - we could overload the data attribute with a class that on Pickling into the ZODB instead writes it on to the filesystem... - we could in the ZODB put a hack to say if pickling something with so and so attribute do this instead... I feel like this something I should just not be doing, but it would be great if I could get it work... -- Andy McKay.

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Java and Zope
by Phil Harris 22 Feb '01

22 Feb '01

Hi all, Over the last few weeks there have been a few questions asked as to whether Zope can play with Java or not. Until now the answer has been a resounding 'NO'. Until now that is, I've done some rudimentary tests, NT4 + Zope2.3.0 + JDK1.3, that indicate to the contrary. If you're interested take a look at http://media-1.ml.uwcm.ac.uk:12380/index_html. This page is calling an external method that imports (in the Python sense) the java.lang.String module, and then does a dir() on that module. Theere are still some issues to iron out, the JVM needs to be created on the python thread that is currently executing, this sometimes goes awry and the jvm is not available for the current thread. This is my focus at the moment. Nothing earth shattering right now, but things will get more interesting. Thing is I'm in no way a Java bod, and can't really test this properly, anyone up for testing it? I have the stuff you need, win32 binaries etc, if you want to play Java + Zope stuff. Thanks for listening Phil phil.harris(a)zope.co.uk

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ZClass -> Python Product
by Tom Deprez 22 Feb '01

22 Feb '01

Hi, Is there a way to convert a running application with ZClass to Python Products without loosing data? Even better : Is there a tool which converts a ZClass in a rough Python Product Code? So that we've already the python source code and only have to make to code cleaner? Thanks in advance, Tom.

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Minor typos in Zope 2.3.1b1 (and potential bug).
by Erik Enge 22 Feb '01

22 Feb '01

If you click the Help-link in a manage_propertiesForm screen (point begin to bring up the Help for the properties) and have a look down where it says in bold "Note:", followed by this strange line of text: [...] This property (or method) should return a list of strings will be used to provide choices for the selection. Well, that cleared it up, didn't it? :). (Prolly missing a "that"?) Another thing, which might be a bug or a feature. I used to do REQUEST.form.keys() to list all attributes in the REQUEST. With 2.3.1b1 that doesn't seem to work, because the attributes are in REQUEST.other. (This is when posting from a form.) The words REQUEST and RESPONSE are also in other, so when I want to do stuff with it I need to make sure I don't include those in the REQUEST which I'm shipping off (because then they would only be strings, not instances, to the next method).

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Re: [Zope-dev] Editing DTML Documents
by Tres Seaver 22 Feb '01

22 Feb '01

Martijn Pieters <mj(a)digicool.com> wrote: > On Tue, Feb 20, 2001 at 03:54:29PM +0100, Philipp von Weitershausen wrote: > > Hi there, > > > > Is there an efficient way to use an external editor to edit DTML Documents? > > Some people in my homepage group are tired of the ZMI and I can understand > > them, especially because of a lack of syntax highlighting. > > There is the possibility of copy'n'paste and upload again, but that's ugly. I > > also read that development on the Mozilla-based management tool is not > > continued. (That's sad, BTW...) > > Could I use WebDAV (don't have any experience with it) to retrieve and save > > the DTML source? If so, is there a good HTML source code editor (don't want > > WYSIWYG!) for Windows or Linux supporting WebDAV? > > > > Any suggestions welcome! > > You can use HTMLKit: > > http://www.chami.com/html-kit > > It supports FTP better than any other Windows tool I know; it can > optionally open files without an extension inside itself. This is a > god-sent for DTML objects like standard_html_header. > > There aren't any WebDAV enabled editors I know of that actually make use > of the added functionality of WebDAV server; they treat it like any other > FTP server. The only exception is Adobe GoLive 5; it uses WebDAV > properties and locking extensively; but you said No WYSIWYG.. :) Cadaver (http://www.webdav.org/cadaver) $ cadaver http://localhost:9088 Looking up hostname... Connecting to server... connected. Connecting to server... connected. dav:/> edit standard_html_header Connecting to server... connected. Downloading `/standard_html_header' to /tmp/cadaver-edit-Be2V3i Authentication required for Zope on server `localhost': Username: manager Password: Retrying: Progress: [=============================>] 100.0% of 80 bytes succeeded. Running editor: `vim /tmp/cadaver-edit-Be2V3i'... Changes were made. Uploading changes to `/standard_html_header' Progress: [=============================>] 100.0% of 85 bytes succeeded. dav:/> ...works for me. :) Tres. -- =============================================================== Tres Seaver tseaver(a)digicool.com Digital Creations "Zope Dealers" http://www.zope.org

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