October 2000 - Zope - Zope lists

PIL/Zope Problem
by Marcello Lupo 27 Oct '00

27 Oct '00

Hi to all, i read all the documentation and made all things to let interact PIL and Zope and i cannot find the way to make it work. If i try to import PIL from pyton interpreter it works perfectly with: ******************************* Python 1.5.2 (#1, Jul 17 1999, 22:10:16) [GCC egcs-2.91.66 19990314/Linux (egcs- on linux2 Copyright 1991-1995 Stichting Mathematisch Centrum, Amsterdam >>> import PIL >>> data=PIL.Image.open("/home/httpd/listanozze/docs/images/prove/ccc.jpg","r") >>> print data.format JPEG >>> print data.info {'adobe_transform': 1, 'progression': 1, 'adobe': 100, 'jfif': 258} >>> print data.size (450, 309) >>> ****************************** as you can see it works. But when i try to access PIL.Image.open from an external method in Zope i get: ******************************* Error Type: AttributeError Error Value: Image Troubleshooting Suggestions The URL may be incorrect. The parameters passed to this resource may be incorrect. A resource that this resource relies on may be encountering an error. For more detailed information about the error, please refer to the HTML source for this page. If the error persists please contact the site maintainer. Thank you for your patience. Traceback (innermost last): File /home/httpd/Zope-2.1.6-src/lib/python/ZPublisher/Publish.py, line 214, in publish_module File /home/httpd/Zope-2.1.6-src/lib/python/ZPublisher/Publish.py, line 179, in publish File /home/httpd/Zope-2.1.6-src/lib/python/Zope/__init__.py, line 202, in zpublisher_exception_hook (Object: ElementWithAttributes) File /home/httpd/Zope-2.1.6-src/lib/python/ZPublisher/Publish.py, line 165, in publish File /home/httpd/Zope-2.1.6-src/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: pippo) File /home/httpd/Zope-2.1.6-src/lib/python/ZPublisher/Publish.py, line 102, in call_object (Object: pippo) File /home/httpd/Zope-2.1.6-src/lib/python/OFS/DTMLMethod.py, line 150, in __call__ (Object: pippo) File /home/httpd/Zope-2.1.6-src/lib/python/DocumentTemplate/DT_String.py, line 502, in __call__ (Object: pippo) File /home/httpd/Zope-2.1.6-src/lib/python/DocumentTemplate/DT_Util.py, line 335, in eval (Object: resize_image(foto)) (Info: foto) File <string>, line 0, in ? File /home/httpd/Zope-2.1.6-src/lib/python/Products/ExternalMethod/ExternalMethod.py, line 255, in __call__ (Object: resize_image) (Info: ((<ZPublisher.HTTPRequest.FileUpload instance at 8565c90>,), {}, None)) File /home/httpd/Zope-2.1.6-src/Extensions/image_op.py, line 7, in resize_image (Object: ElementWithAttributes) AttributeError: (see above) ********************************* My external Method say: **************************** import PIL def resize_image(self, foto): if foto: data=PIL.Image.open(foto) data=data.resize((128, 128)) return data.size else: return "Nothing" *************************************** Can anyone help me?? Thanks Bye, MArcello

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ownership problems
by Danny William Adair 27 Oct '00

27 Oct '00

I have created an account with Manager role and tried to add a LocalFS (v0.9.6) object to the root folder. I have set all possible rights for the Manager role. ---------------------------------------------------------------------------- ------------ Zope version: Zope 2.2.1 (source release, python 1.5.2, linux2) Python version: 1.5.2 (#1, Feb 1 2000, 16:32:16) [GCC egcs-2.91.66 19990314/Linux (egcs- System Platform: linux-i386 ---------------------------------------------------------------------------- ------------ This is what I get:  Adding other object types is no problem.

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More ZFormulator
by Spicklemire, Jerry 27 Oct '00

27 Oct '00

Hi Zope Fans, Re. the problems I mentioned in an earlier post, it may be related to an error that turned up when I tried to run the ZF_Demo module. It seems to be unable to locate: "ApplicationDefaultPermissions" Does that ring any bells? A Google Search of Zope.org turns up several references, and it seems to be a part of core Zope, but I have no idea how it could be unavailable. Might the way Zope is started have an impact on which pieces-parts are accessible? The error shows: Traceback (innermost last): File /i01/Zope-2.1.3-solaris-2.6-sparc/lib/python/ZPublisher/Publish.py, line 214, in publish_module File /i01/Zope-2.1.3-solaris-2.6-sparc/lib/python/ZPublisher/Publish.py, line 179, in publish File /i01/Zope-2.1.3-solaris-2.6-sparc/lib/python/Zope/__init__.py, line 202, in zpublisher_exception_hook (Object: ApplicationDefaultPermissions) File /i01/Zope-2.1.3-solaris-2.6-sparc/lib/python/ZPublisher/Publish.py, line 151, in publish File /i01/Zope-2.1.3-solaris-2.6-sparc/lib/python/ZPublisher/BaseRequest.py, line 304, in traverse File /i01/Zope-2.1.3-solaris-2.6-sparc/lib/python/OFS/Application.py, line 249, in __bobo_traverse__ (Object: ApplicationDefaultPermissions) File /i01/Zope-2.1.3-solaris-2.6-sparc/lib/python/ZPublisher/HTTPResponse.py, line 511, in notFoundError NotFound: (see above) Thanks, Jerry S.

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dtml-with using string reference and acquisition
by Matt 27 Oct '00

27 Oct '00

Hi, I am having a problem with using a string reference to an object. The scenario is as follows : I have the tree structure - testfolA display_method testfolB testfolC if display_method looks like the following, everything is fine : <dtml-var standard_html_header> <dtml-call "REQUEST.set('go_here','testfolB')"> <dtml-with "_[go_here]"> <dtml-var id> </dtml-with> <dtml-var standard_html_footer> it returns testfolB as I would expect. now if I change <dtml-call "REQUEST.set('go_here','testfolB')"> to now read <dtml-call "REQUEST.set('go_here','testfolB.testfolC')"> I get a Key_error that the URL does not exist. So I understand that testfolB.testfolC is not explicitly on the namespace stack, where as testfolB is, so that calling <dtml-with "testfolB.testfolC"> would work since it is a sequential object traversal, but unfortunately I have to create the second level object through a string reference that is passed in through a form. In some instances it may be more than 2 levels deep. Is there a way to traverse a string name of an object in one hit, or do I need to use String.split and traverse through each object name doing a "_[.... or "_.callitem(.... ? Any help would be very much appreciated. regards Matt Bion

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Multiple Propertysheets from the same Python class ?
by Steinar Rune Eriksen 27 Oct '00

27 Oct '00

I am trying to make a "template" for creating different types of portals. Especially I am looking to develop my own DemoPortal (Portal) ZClass where I can subclass other Memberand PortalProperties from Python and more easily create a ZClass (like the Portal ZClass) that subclasses my Python classes. Question is: Can the contents of the Portal ZClass in DemoPortal by fully exportet to Python code and subclassed inside Zope (like the ZDG describes) ? I understand Python can put classes inside classes which would be necessary. But how do you define different property sheets within one Python class ? The DemoPortal has a MemberClass with 2 propertysheets (CommonProperties and SystemProperties) which I guess must be kept separate. Is this at all possible to do from Python, or am I barking up the wrong tree here. Regards Steinar ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. Admin Orion System AS **********************************************************************

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Problems with ZPhoto, ZPhotoAlbum, and ZAlbumPage
by Dave Belfer-Shevett 27 Oct '00

27 Oct '00

Hey there folks. I've just downloaded and installed these Products into my Zope instance. I'd talk to any of the support groups / lists / etc for these Products, but I can't find anythign aside from the author link, and a few small hints on the download page. I -think- I'm setting up an Album properly. Here are the steps, someone please tell me if this is not correct (There's an error that happens that I'll report in a moment...) 1) Install all the packages 2) Import ZPhotoAlbum via the Control panel 3) Go to whatever directory I want to run from 4) Add a ZPhotoAlbum object (we'll call it 'abc' for now) 5) go into 'abc' folder (note the only thing in it right now is 'Vocabulary' 6) Add a ZAlbumPage (calling it 'page1') 7) go into 'page1' folder 8) Add a ZPhoto Okay, here's where it gets fuzzy. My initial impression is "okay, tha'ts it. Just keep adding ZPhotos to populate the album". But when going to url.url.com/abc/ I just get the default 'index.html'. Tinkering, I found the 'Restore DTML' button up on the toolbar for the PhotoAlbum. So I click that, and get a lot more content in the folder in the management screen. Now when I go to url.url.com/abc/, I see my index, the AlbumPage, and the ZPhoto that I added. Here's where the problem happens. There are 2 buttons at the bottom of the page called 'fancy view' and 'explore view'. They should allow different views of the indexes. But when I click on one, I get: Zope Error Zope has encountered an error while publishing this resource. Error Type: NameError Error Value: defined_views here's the traceback: Traceback (innermost last): File /home/shevett/zope/lib/python/ZPublisher/Publish.py, line 222, in publish_module File /home/shevett/zope/lib/python/ZPublisher/Publish.py, line 187, in publish File /home/shevett/zope/lib/python/Zope/__init__.py, line 221, in zpublisher_exception_hook (Object: CatalogAware) File /home/shevett/zope/lib/python/ZPublisher/Publish.py, line 171, in publish File /home/shevett/zope/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: switch_view) File /home/shevett/zope/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: switch_view) File /home/shevett/zope/lib/python/OFS/DTMLMethod.py, line 172, in __call__ (Object: switch_view) File /home/shevett/zope/lib/python/DocumentTemplate/DT_String.py, line 528, in __call__ (Object: switch_view) File /home/shevett/zope/lib/python/DocumentTemplate/DT_Util.py, line 337, in eval (Object: view not in defined_views or not view_id) (Info: defined_views) File <string>, line 0, in ? NameError: (see above) Any suggestions? -------------------. Web-based problem management: www.stonekeep.com Dave Belfer-Shevett >----------------------------------------------------. shevett(a)pobox.com / I like you... I'll kill you last... (from 'Handy \ ------------------< work phrases') | \______________________________________________________/

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ZClass and SQL Table
by César A. K. Grossmann 27 Oct '00

27 Oct '00

Hi I have an old system based on a SQL database, and wanna to make a Web version of it. Are there any way to represent the SQL tables as ZClasses? I mean, the attributes of the ZClasses be stored in a SQL table? TIA -- +---------------------------------+---------------------------------+ | César A. K. Grossmann | Capacitação Solidária | | ckant(a)fazenda.gov.br | http://www.uol.com.br/umminuto/ | | http://members.xoom.com/ckant/ | Clique e doe - é de graça | +---------------------------------+---------------------------------+ http://www.halcyon.com/sciclub/cgi-pvt/instr/instr.html A long-forgotten loved one will appear soon. Buy the negatives at any price.

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Re: [Zope] Zope/PIL collision - what to do?
by Jens Vagelpohl 27 Oct '00

27 Oct '00

try something like.... import PIL image = PIL.Image.open('foo.png') that way you do not have two names "Image" colliding in the names Zope sees jens ---- Jens Vagelpohl jens(a)digicool.com Software Engineer www.digicool.com Digital Creations (888) 344-4332 Got Zope? ---- on 10/26/00 18:44, Anselm Lingnau at lingnau(a)tm.informatik.uni-frankfurt.de wrote: > I'm trying to use the Python Imaging Library in an external Python > method to modify some images dynamically. However, when I try to load > an image: > > import Image # from PIL - refers to PIL ImageFile module > image = Image.open("foo.png") > > the method crashes because the Image module sees the Zope »ImageFile« > module instead of the one from PIL. The Zope module, of course, does > something completely different from the other one. This is on Debian > GNU/Linux 2.2 with Zope 2.2.2 (taken from the »unstable« distribution > and re-built -- the Zope in Debian 2.2 is older) and the PIL 1.0.1 > from the distribution. > > How do I get around this? > > Anselm

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advice re virtual hosting
by Jonathan Cheyne 27 Oct '00

27 Oct '00

Hi all, just need to check the received wisdom regarding the various possible combinations for doing virtual hosting with zope. I have two domains, one is 'mine' and I want that to go to the root of my zope installation. the other domain is for an internal client and I want that to go to a folder within my zope (so they can acquire some of my content). i.e. www.blue.com --> zopeserver/ www.red.com --> zopeserver/red/ Whats the best way? There seem to be three or four options, apache on 80 with zope on 8080 using virtual hosts on both (either?), squid on 80 and zope on 8080 and finally zope alone on 80. The site will be relatively low traffic for the root branch but higher public traffic for the clients branch. Whats the 'best' way? I got apache to front zope with proxypass and with proxying on and seemed to get better performance. What about flexibility? What about rewriting versus virtual hosts? Ah so many juicy options! I have a colocated box and the isp is holding two domains pointed at the same ip address so I guess name based vhosts are the way by default but is it better to try and get zope to do it alone on 80 (is this possible?) or is it always better to have apache do it. I don't forsee any need for genuinely static content that cannot be served from zope. Your advice gratefully received. Jonathan

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Hosting?
by Paul Winkler 27 Oct '00

27 Oct '00

Hi, I'm wondering if anyone can recommend a commercial Zope hosting service for me. I've looked at the resources page on zope.org, and I have a couple feelers out, but I'd like to ask the community for recommendations as well. Requirements: I need a system that can handle a potentially very heavy load, though at first it will be quite small - we're a startup and have no customers yet. Location: We're in the northeast USA and most of our users will probably be in the US as well, so I'd prefer a service in North America. Zope: 2.2 at least, and access to install new products and external methods. I'm currently on codeit.com, but they have zope 2.1 and I need zope >= 2.2 so I can use my custom product derived from PTK 0.9. Storage: We're doing things with digital images - *big* ones - so we need to start at about 100 MB and will need to grow; we'll be storing a *lot* of data for our users. Eventually (probably not until later in 2001) we'll need MUCH more - possibly up to 1 GB eventually. (Beyond that point we will probably just rent a server at rackspace.com or somewhere but first we need to be able to develop a big enough customer base to pay for it.) Data transfer: Several times greater than storage. Users will upload large files which we will then download to our local network, so that's at least 2x our storage needs, plus there's the transfer involved in just using the site. Pricing: since our storage requirements will be continually growing, I'd like a payment plan that enables us to pay for the storage we need and add more as needed. -- ................. paul winkler .................. slinkP arts: music, sound, illustration, design, etc. web page: http://www.slinkp.com A member of ARMS: http://www.reacharms.com

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