October 2000 - Zope - Zope lists

How to use manage_addLocalFS
by Grewen.de 02 Oct '00

02 Oct '00

Hi all, I want to create an LocalFS object. I use <dtml-call "manage_addLocalFS('LocalFS', 'Tis is the title', '/home/zope/productimages')"> but that doesn´t work. Simular to <dtml-call "manage_addFolder('Folder', 'Tis is the title')"> Any ideas? May I have to use a externel methode like in the mail I posted before?

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re: [Zope] FYI: Python product tutorial updated
by Darcy Clark 02 Oct '00

02 Oct '00

This tutorial looks great...it explained a lot of things to me that I wasn't able to put together before. But...on looking at it, a nagging thought keep recurring...this is a really quite long and complicated process for a Poll product. As much as I like Zope and thing it is a great platform on which to develop web applications, I often wonder about the complexity and obscurity of some of the procedures that need to executed while making what are, on the face of it, often quite simple web objects or applications. Consequently I have honestly had quite a hard time convincing PHP-savvy colleagues that the path to Zope Zen is something worth starting on. Does anyone else experience these nagging doubtful thoughts occasionally ? Darcy -------------------------------------- From: Shane Hathaway <shane@d...> Date: Fri Sep 22, 2000 11:56am Subject: [Zope] FYI: Python product tutorial updated The Python product development tutorial has been updated to reflect current practices. It is accompanied by a working product that contains all the sample code (which should also replace the "Boring" product.) It will likely be included in the Product Developer's Guide. See http://www.zope.org/Members/hathawsh/TutorialUpdate . Shane

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Hotfix_2000-10-02
by Shane Hathaway 02 Oct '00

02 Oct '00

http://www.zope.org/Products/Zope/Hotfix_2000-10-02/Hotfix_2000-10-02.tar.gz This hotfix addresses an important security issue that affects Zope versions 2.2.0, 2.2.1, and 2.2.2. It is sometimes possible to access, through a URL only, objects protected by a role which the user has in some context, but not in the context of the accessed object. Currently, the validate() method of all known user folder implementations validates against the users' roles in the context of PARENTS[0]. PARENTS[0] refers to the acquisition context of the object being published. All security checks, however, should check an object's containment, not its acquisition context. validate(), therefore, needs to verify the user's roles in the context of the object being published. This hotfix forces that to occur by temporarily leaving the object at PARENTS[0] then removing it after validation has been performed. Unfortunately, this is not an ideal correction. In the near future all user folder validate() implementations need to perform security checks using the new Zope security policy subsystem. Until that is completed, this hotfix should close the security problem. While we know of no instances of this issue being used to exploit a site, we recommend that any Zope 2.2.x site that is accessible by untrusted clients have this hotfix product installed to mitigate the issue. The hotfix will work for all versions of Zope 2.2.0 and higher. A future version of Zope will contain the fix for this issue, and you will be able to uninstall the hot fix after upgrading.

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[Q] Generating a dynamic navigation bar...
by Sudhakar Chandra 02 Oct '00

02 Oct '00

Background: I have a folder with various DTML Documents and sub-folders in it. Sort of like: /foo/index_html /foo/buy_html /foo/really_buy_html /foo/really_really_buy_html /foo/bar/ I am in the process of writing a DTML method to be used from each of these DTML documents which will generate a dynamic tabbed navigation bar for the other DTML Documents AND sub-folders in this folder. I am envisioning a short table across the width of the page with cells containing links to the other DTML documents and sub-folders. This is what I have so far: <TABLE BORDER=0 CELLSPACING=2 CELLPADDING=0 WIDTH="100%"> <TR>    <TD BGCOLOR="#99CCCC" ALIGN=CENTER VALIGN=TOP> <a href=""></a> </TD>    </TR> </TD> </TABLE> Questions: 1. The problem with this DTML method is that all the DTML Documents and Folders are represented as a link in the nav bar. I want to build intelligence into this DTML method to make the tab / cell for the current document just textual (as opposed to a link). If I am calling this method from foo_html, I do not the "tab" for foo_html to be a link. How do I do this? I'm guessing some kind of #if. 2. Currently, the TD cells of the table vary in length based on the contents of the cell. I want all the TDs to be of equal length. I want to first count the number of DTML Documents and Folders and make each TD to be width 100/n % (where n is the number of Documents and Folders). Any ideas on how I can do math inside DTML methods? Thanks. Thaths -- Lisa: It's full, Dad, that means you have to take out the trash. Bart: Yup, that's the rule. "He who tops it off, drops it off." Homer: Nuh-uh. "It isn't filled until it's spilled." Sudhakar C13n http://www.aunet.org/thaths/ Lead Indentured Slave

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FYI: Python product tutorial updated
by Spicklemire, Jerry 02 Oct '00

02 Oct '00

Hi Brian, Regarding: > I'd be very interested to hear any ideas you folks have > on ways to help "make simple things simple" for development > and to allow people to deal with complexity only as they > begin to need it... One of the features the stands when a newbies starts poking around at Zope.org is the wealth of contributed modules. Most of these were created as an aid to development, sort of a "make the process of creating a complex thing into a simpler process" approach. However, it's kind of like all the goodies available for Linux, or Perl, or Python itself, and any number of other Open Source projects that have generated lot's of add-ons. The problem is that finding time to try them all to see which turn out to be useful is another kind of complexity in itself. It seems like the Zope community should be able to benefit by leveraging all the great stuff that's there. On the other hand, the sheer volume turns out to be a barrier. I keep coming back to the notion of building a subset of the most useful, solid, and well documented modules into a "core" Zope distribution, so that they are available as "add" options without lot's unzipping, restarting, etc. Beyond that, a painless way to upgrade versions of all things Zope would definitely encourage folks to keep up with security fixes, and other improvements. Think about Debian's and FreeBSD's update tools. In order to get to the "consulting ware" vision of a more productiive Zope, "out of the box", this is the kind of thinking that needs to be adopted. We know there are wonderful and astounding things that are possible if you aren't afraid to get your hands dirty reading source code, but most folks expect anything they need to do to be sitting there waiting behind a menu option! This sounds to me like a higher level of object creation, Martijn Faassen's Formulator comes to mind, that can be selected and integrated into an existing site that has graphic standards already defined, which is itself another high level object that could help. A Graphic Standards "Template" that can be applied in the form of a "wrapper", and can be adjusted trough a forms based interface with options for colors, type style, background images, etc. Thanks, Jerry S.

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Zope Dies with FastCGI
by Ronald L. Roeber 02 Oct '00

02 Oct '00

I have the following set-up under which Zope occasionally dies. Zope 2.2.2 (same happened with 2.2.0 and 2.2.1) RedHat Linux 6.2 Apache 1.3.12 - with fastcgi/2.2.8 and OpenSSL/0.95a I'm running Zope with Fastcgi and using Apache rewrite rules to redirect all URLs that contain "manage" to https. It seems to work fine except on occasion Zope will die with the following error: "ZServer uncaptured python exception, closing channel <FCGIChannel connected 127.0.0.1:2198 at 87195b> (socket.error:(32, 'Broken pipe') [path_to_Zope/Zserver/medusa/asynchat.py|initiate_send||211] [path_to_Zope/Zserver/medusa/asynchat.py|send|274]) This doesn't always mean the server is dead but it is the only error I can trap with debug turned on. I am starting the Zope server with the -Z option. Ideas. I'm about ready to start making the server more widely available but cannot if the server is unreliable. Ideas, strategies, options? TIA Ron Roeber

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Mailhost TypeError
by Roch'e Compaan 02 Oct '00

02 Oct '00

I'm recreated a mailhost in Zope 2.2.0. Whenever I want to send mail with sendmail tag I get a TypeError. This worked in Zope 2.1.x. This is the traceback: Traceback (innermost last): File /usr/local/zope/2-2-0/lib/python/ZPublisher/Publish.py, line 222, in publish_module File /usr/local/zope/2-2-0/lib/python/ZPublisher/Publish.py, line 187, in publish File /usr/local/zope/2-2-0/lib/python/Zope/__init__.py, line 221, in zpublisher_exception_hook (Object: RoleManager) File /usr/local/zope/2-2-0/lib/python/ZPublisher/Publish.py, line 171, in publish File /usr/local/zope/2-2-0/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: manage_editProperties) File /usr/local/zope/2-2-0/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: manage_editProperties) File /usr/local/zope/2-2-0/lib/python/Products/Etailer/OrderManager.py, line 136, in manage_editProperties (Object: RoleManager) File /usr/local/zope/2-2-0/lib/python/App/special_dtml.py, line 120, in __call__ (Object: testemail) File /usr/local/zope/2-2-0/lib/python/DocumentTemplate/DT_String.py, line 528, in __call__ (Object: testemail) File /usr/local/zope/2-2-0/lib/python/Products/MailHost/SendMailTag.py, line 188, in render (Object: MailHost) File /usr/local/zope/2-2-0/lib/python/Products/MailHost/MailHost.py, line 220, in send (Object: MailHost) File /var/tmp/python/python-root/usr/lib/python1.5/smtplib.py, line 465, in sendmail File /var/tmp/python/python-root/usr/lib/python1.5/smtplib.py, line 349, in mail File /var/tmp/python/python-root/usr/lib/python1.5/smtplib.py, line 118, in quoteaddr File /var/tmp/python/python-root/usr/lib/python1.5/rfc822.py, line 451, in parseaddr File /var/tmp/python/python-root/usr/lib/python1.5/rfc822.py, line 496, in getaddrlist File /var/tmp/python/python-root/usr/lib/python1.5/rfc822.py, line 504, in getaddress File /var/tmp/python/python-root/usr/lib/python1.5/rfc822.py, line 484, in gotonext TypeError: len() of unsized object --> The source for my DTML method: <dtml-if orderemail> <dtml-sendmail mailhost="MailHost"> To: <<dtml-var orderemail>> From: <<dtml-var orderemail>> Subject: Test email from <dtml-var shopName> Hi, This is a test email from your online shop. If you have received this email, then you will also receive an email for each of the orders that are placed at your online store. </dtml-sendmail> </dtml-if>

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Re: [Zope] LocalFS manage_addFolder solution?
by dan＠sol.control.com 02 Oct '00

02 Oct '00

"jensebaer" <jensebaer(a)hotmail.com> writes: > ______________________________________________________________________________ > > > Folder creation isn't really supported in LocalFS at the moment.� Very > > low level support is there (module function _save_Folder) but it's not > > intended to be called externally and there doesn't seem to be any path > > to call it.� There is certainly not a local definition of > > manage_addFolder in LocalDirectory.� This is on my list of stuff to do > > for our site, but I don't know if it's on Jonothan's list for the real > > product. > It is. It's hard. I'm going to need some help with this one, I'm afraid. > --jfarr > ______________________________________________________________________________ > > My question: > > Is there now a solution to perfom manage_addFolder to LocalFS? The general case _is_ hard, but special cases can be much easier. In an earlier message Jonothan recommended using external methods to add folders. We plan to take this approach for our use. For one thing it makes enforcing our site policies much easier than a general approach.

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RE: [Zope] How to use management tabs not for management
by Ron Bickers 02 Oct '00

02 Oct '00

I didn't mean to imply that I didn't want to use any DTML. If there's a way to set manage_options and call manage_tabs though DTML or a Python method, that would be ideal. I would like to avoid having to create my own modified manage_tabs for this purpose, but if that's what it takes, so be it. _______________________ Ron Bickers Logic Etc, Inc. rbickers(a)logicetc.com > -----Original Message----- > From: Peter Bengtsson [mailto:peter@grenna.net] > Sent: Monday, October 02, 2000 7:23 AM > To: Ron Bickers > Cc: zope(a)zope.org > Subject: Re: [Zope] How to use management tabs not for management > > > Viewing the HTML source of your Zope management and highlightning > the tabs HTML? There is no DTML there. > However, there are some images. src="/p_/ltab" and src="/p_/rtab" > Could that be it? > > > > > I want to create create HTML pages with my own Zopish looking > tabs that have > > nothing to do with Zope management. Is there a simple way to use > > manage_tabs for this, or do I need to make my own version of > it? Everything > > I've tried gets me caught up in the Zope management system.

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Re: [Zope] XMLRPC:XML Compressors - anybody experienced it?
by Skip Montanaro 02 Oct '00

02 Oct '00

Philipp> Did anybody play with XML compressors for Zope or at least have Philipp> a hint how to do that? I use a slightly modified version of Fredrik Lundh's xmlrpclib.py module that will often use zlib compression to compress responses. Running over a wide area network such as the Internet I've seen speedups of as much as 5-to-1. Instructions and my current version of xmlrpclib.py are available from my Python Bits page: http://www.musi-cal.com/~skip/python/ I believe it is a drop-in replacement for Zope's version, though note that my code has other mods as well (in particular, it specifies the encoding as Latin-1 for all requests and responses). You should compare it with the versions distributed with Zope or by PythonWare to decide what changes you want to incorporate in your own system. -- Skip Montanaro (skip(a)mojam.com) http://www.mojam.com/ http://www.musi-cal.com/

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