November 2000 - Zope

zzLocale 0.0.3a uninstall bug fix
by Yves-Eric Martin 09 Nov '00

09 Nov '00

Hello, Once installed, zzLocale 0.0.3a cannot be removed (if removed, Zope refuses to start, complaining that zzLocale cannot be found). Since 0.0.3a is an alpha release, I was not planning to write a fix to such a broken Zope. But I have been asked to, so here it is: http://www.zope.ne.jp/users/yemartin/zzLocale/fix__init__003a.py Reinstall zzLocale-0-0-3a, replace its __init__.py by the above file, and restart the Zope process. This will fix the ZODB and make zzLocale removable. Cheers, -- Yves-Eric Martin Digital Garage Inc. yemartin(a)garage.co.jp

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test
by Matt Burleigh 09 Nov '00

09 Nov '00

test -- Matt Burleigh Systems Administrator, Digital Creations - publishers of Zope.

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Acquisition beahviour ... static/shared vs local instance
by Matt 09 Nov '00

09 Nov '00

This is more a philosophical question about what is the better way to organize a Zope utility. The feeling of acquisition is a nice one, and is a joy to program with, but there seems to be one scenario that troubles me a little. Am I correct in assuming that objects and their properties(if they are allowed them) are static, or shared in their nature. I.e. : 2 people accessing the same object at the same time are sharing that object, and therefore can potentially collide if they both are able to execute a method that changes this object, say a property such as language. To overcome this I reorganized things such that shared objects could only have constant like properties that only a manager can change and then created a session object, which is just a rather boring ZClass that can hold onto session variables so that I don't have to keep passing them around as form variables, since this is the interface that the public user has. Maybe this is not the right way to do it, maybe there are better ways of letting someone move around with session variables. I thought perhaps cookies would be a better thing, except that people can turn these off. The next problem then is that it is easy enough getting people to login through a particular node so that I can set a sheet up for them before redirecting them to another part of the Zope environment, but there is no way to ensure they have to log out so that I can throw the sheet away. Hmm, yes cookies sound better. The more important point is that I have used methods in their fullest sense of acquisition ... I use redirects to activate a method in the correct part of the Zope environment so that it acquires what it needs and creates instances of various ZClasses as required. These methods are obviously reasonably close to root of the hierarchy, just so they can be thrown to many places. I want to be able to restrict where these can be thrown to stop people playing around with their own urls and creating bad objects in the wrong places. Anyone have any thoughts on these problems? regards Matt Bion

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Zope Book (Error and Suggestion)
by The Doctor What 09 Nov '00

09 Nov '00

At least I think it's an error (either in my understanding or in the book). First off, I think the books great. Finally something that's trying to explain what's going on. Zope looks so cool, but it's been hard for a hardcode PHP and Perl programmer like me to get my brain around it. Anyway, my suggestion is that all the image URLs be fixed so that your book can be easily mirrored with normal web-tools. Perhaps even offer a version that's downloadable. When I went to mirror it, my mirror software choked on image urls like: http://www.zope.org/Members/michel/ZB/SimpleExamples.html/Figures/5-7.png The mirror was so I can use it at home where I don't have a reasonable net access (very flaky 56k, it hoses up frequently as it's through work). The error or problem that I have run into is that I can't get the Guest Book in chapter 5 to work. They python method listed there does not work for me. I'm using Debian Unstable (Woody) with these versions of packages: ii zope 2.2.2-3 The Z Object Publishing Environment ii zope-bytecodeh 0.1.7-2 Rewrite bytecode of functions to do unlikely ii zope-pythonmet 0.1.7-2 Allows ZopeMethods to be written in plain Py That's bytecodehacks and pythonmethods on the bottom there. The error message is: Error Type: NameError Error Value: context I have no idea how to fix this, so I'm asking here. Ciao! -- When you say 'I wrote a program that crashed Windows', people just stare at you blankly and say 'Hey, I got those with the system, *for free*'. -- Linus Torvalds The Doctor What: Not that 'who' guy http://docwhat.gerf.org/ docwhat(a)gerf.org KF6VNC

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RE: [Zope] Newbie help - method needs auth > anonymous. WHY?
by Casey Duncan 09 Nov '00

09 Nov '00

John Wrote: [snip] > I am trying to use this method called objectList: > > <ul> > <dtml-in objectValues> > <li><dtml-var id></li> > </dtml-in> > </ul> > > I've put it in the standard_html_header. [snip] > When I try looking at the root page (http://john:8080) I have to provide authentication before the page will display. What your method is doing, is stepping through every object at the root of your Zope server. Not every object there is accessible by anonymous. Even in a fresh Zope installation, Control_Panel is restricted to managers, so that is the likely culprit. To get around this problem, there is an argument for dtml-in called "skip_unauthorized" which will automatically skip over any objects that the current user is not authorized to access. Changing your dtml-in statement to: <dtml-in objectValues skip_unauthorized> Will prevent this error. However, you will get every little object in your root directory. So, standard_html_header, index_html, standard_html_footer, etc. will appear. If you want to exclude these, specify just the meta types you want to objectValues. For instance, to show only folders try this: <dtml-in expr="objectValues(['Folder'])" skip_unauthorized> To show folders and DTML documents, try this: <dtml-in expr="objectValues(['Folder','DTML Document'])" skip_unauthorized> etc., etc. hth, Casey D.

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objectValues type?
by Richard Lanham 09 Nov '00

09 Nov '00

Hello, I have this simple tree: <dtml-tree branches="objectValues" skip_unauthorized="1"> <input type="checkbox" name="delItems:list" VALUE="<dtml-var id>"> <a target=main href="&dtml-absolute_url;"><dtml-var title_or_id></a> </dtml-tree> The anchor's target is main. But it if it is a Folder I want the target to be self. And I want to skip some items. How do I return the objectType (eg Folder, Document, Method) so I can alter the anchor, and/or object Properties that I might set to make other decisions? Thanks, Richard

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Properly integrating PIL, reportlab, and zope
by ed colmar 08 Nov '00

08 Nov '00

Hi all! I am working on a project using zope and reportlab. The goal is to have uploaded images end up in a formatted PDF file. I have both of these halves completed, I need to figure out how to connect them. I have been using SquishFile.py as the wrapper around uploaded images, as is done in squishdot. The few image types I have tried have displayed fine on screen, but PIL is not able to recognise the image. How would you go about wrapping the file in a PIL.Image() ? I've been trying things similar to: cardimage=PIL.Image.open(self.uploadedimage) c.drawInlineImage(cardimage, 1,1) This gives an error in reportlab.canvas.convert() I tried using PIL.image.fromstring(), but I can't quite get the it to work out: filebytes=[str(self.uploadedimage.file_bytes()), 'bytes'] cardimage=PIL.Image.fromstring(self.uploadedimage.content_type(), filebytes, self.uploadedimage.file_data()) c.drawInlineImage(cardimage, 1,1) This gives a typeerror: PIL/Image.py, line 848, in new has anyone succesfully done this? can I just Leave the SquishFile wrapper off if it is ONLY going to be images that get uploaded? Thanks for any ideas! -ed-

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SiteAccess2: How do I suppress all when managing?
by Danny William Adair 08 Nov '00

08 Nov '00

How can I suppress the URL generation in the management screens? I've seen the "Z" folder example but it didn't work for me. Everything is fine except the management interface. tia, CU+Prost, .oO( "Du könntest mal einen bauen" ) Danny

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Newbie help - method needs auth > anonymous. WHY?
by jvoth＠mobiltex.com 08 Nov '00

08 Nov '00

Howdy Folks, I'm a Zope newbie (5 days and counting). I am trying to use this method called objectList: <ul> <dtml-in objectValues> <li><dtml-var id></li> </dtml-in> </ul> I've put it in the standard_html_header. When I try looking at the root page (http://john:8080) I have to provide authentication before the page will display. How can I alter the permissions so that an anonymous user doesn't have to log in? Thanks in advance! John -- /====================================================================\ | John Voth Mobiltex Data Ltd.Calgary, Alberta,Canada, T1Y-4T7 | | jvoth(a)mobiltex.com 403-291-2770, 403-259-6795 (fax) | \====================================================================/

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Re: [Zope] ZMethod (Safe)
by Simon Michael 08 Nov '00

08 Nov '00

jpenny(a)universal-fasteners.com writes: > Damn, I am beginning to think that Tame Snake Thingy and Wild Snake > Thingy are the best yet! Yeah! new poll please :)

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