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Re: [Zope] system requirements
by Stephan Goeldi 03 Jun '02

03 Jun '02

>Hardware: Dual AMD Athlon processors (2+ GHz) > Tyan motherboard with 760 chipset? > 1GB DDR memory with ECC. (2GB if budget allows) I would suggest to use 2GB Memory. If budget doesn't allow, use slightly slower processors (1.8GHz?) and use the money for the RAM. > 40 GB+ disk (probably IDE) > SCSI So what do you need SCSI for, if the disk is IDE? Performance is not only a question of hardware. Have a look at the performance section on http://www.zopehosting.ch/ -goe- _________________________________________________________________ Join the worlds largest e-mail service with MSN Hotmail. http://www.hotmail.com

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Folderish object with linking to other Folders
by Oliver Marx 03 Jun '02

03 Jun '02

Dear Reader I want to extend the folder object with the capability the link to other folders not in the folder. Folder1/Folder2 (Folder1 is parent of folder2) Folder1~Folder2 (Folder1 is related to Folder2) I could make a python script which returns all folder that I want to link to, but I'm looking for something a bit more dynamic. \Oliver

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Anything like python's "dir" command for Zope?
by Joel 03 Jun '02

03 Jun '02

Hi, One of the things I love most about Python is the ability to quickly drill down into any object, to see what attributes it has, what functions it can call, and so on. (see below for a demonstration of what I'm talking about.) I am now learning to use Zope, and am becoming increasingly frustrated trying to figure out what various things provide. For instance, container.objectIds() shows a list of everything in the root directory... container.portal_url() shows the base url... ... and I'm sure that there are a dozen (or a hundred) other things that I can do with a container object. How do I find them? dir(container) doesn't work. It looks to me like the dir command doesn't work under Zope, probably for security reasons. Does Zope have anything analagous? If not, how *do* you find out what any given object can do? --Joel $ python Python 2.2 (#1, Feb 24 2002, 16:21:58) [GCC 2.96 20000731 (Mandrake Linux 8.2 2.96-0.76mdk)] on linux-i386 Type "help", "copyright", "credits" or "license" for more information. >>> import string >>> print string <module 'string' from '/usr/lib/python2.2/string.pyc'> >>> dir(string) ['_StringType', '__builtins__', '__doc__', '__file__', '__name__', '_float', '_idmap', '_idmapL', '_int', '_long', 'ascii_letters', 'ascii_lowercase', 'ascii_uppercase', 'atof', 'atof_error', 'atoi', 'atoi_error', 'atol', 'atol_error', 'capitalize', 'capwords', 'center', 'count', 'digits', 'expandtabs', 'find', 'hexdigits', 'index', 'index_error', 'join', 'joinfields', 'letters', 'ljust', 'lower', 'lowercase', 'lstrip', 'maketrans', 'octdigits', 'printable', 'punctuation', 'replace', 'rfind', 'rindex', 'rjust', 'rstrip', 'split', 'splitfields', 'strip', 'swapcase', 'translate', 'upper', 'uppercase', 'whitespace', 'zfill'] >>> dir (string.zfill) ['__call__', '__class__', '__delattr__', '__dict__', '__doc__', '__get__', '__getattribute__', '__hash__', '__init__', '__name__', '__new__', '__reduce__', '__repr__', '__setattr__', '__str__', 'func_closure', 'func_code', 'func_defaults', 'func_dict', 'func_doc', 'func_globals', 'func_name'] >>> string.zfill.__doc__ 'zfill(x, width) -> string\n\n Pad a numeric string x with zeros on the left, to fill a field\n of the specified width. The string x is never truncated.\n\n '

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Suppress traceback in error page? 2.5.1
by Dario Lopez-Kästen 03 Jun '02

03 Jun '02

Hello! I have almost sucessfully upgraded my zope from 2.4.4.b2 to 2.5.1. The problem I have now is that it suddenly starts printing tracebacks on evey error page. I have changes nothing except the zope version. It seems that 2.5.1 defaults to debug mode no matter what. I am not using the -D option, an I have set the following in the env that zope uses: Z_DEBUG_MODE=0 HTTP_TRACEBACK_STYLE=none to no avail. Zope still thinks it is in Debug mode. It used to work with 2.4.4... Any hints/suggestions? Thanks, /dario - -------------------------------------------------------------------- Dario Lopez-Kästen, dario(a)ita.chalmers.se IT Systems & Services System Developer/System Administrator Chalmers University of Tech.

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login_form doesn't accept pswd
by Santagostino Pretina, Luca 03 Jun '02

03 Jun '02

hi list, I have got this problem with login_form that is driving me crazy... I can create new users with the join_form with no problems (it shows them in the acl_users folder)but when I try to login it doesn't accept the pswd and if I look in the control panel I can see that the pswd is different from the one I created. (suppose I created a 10 letters pswd and in the acl_users folders only shows a pswd of 8 caracters, and always 8...no matter how long is the password I set). It's driving me crazy...can anyone help or anyone else has experienced smthing similar? I'm pretty new to zope and I just created a brand new cmf_site. thanks for helping Luca

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Page Templates are great, but...
by Page Page 03 Jun '02

03 Jun '02

I like page templates because they permit uncomplicated cooperation with designers who don't know DTML and/or use drag-and-drop composers. Newbie I am, however, I see a few problems here, and I hope they stem from my ignorance. 1.) Can page templates be "modularized"? DTML is great for assembling pages from re-usable blocks, i.e. dtml_standard_header, dtml_standard_footer. I have not found an equivalent facility for page templates. Is there any? 2.) Symbols How am I supposed to work with symbolic information like table width? Of course, I'm free to create python-functions which pull the raw figures from a config-file or db, but having a separate function for each of the dozens of symbols I would need will give me carpal tunnel syndrome. 3.) Dynamic pages This is a more generic newbie question, since it is not confined to the realms of page templates. Let's say my site sports a uniform layout for hundreds of used-car ads. Each ad gets its own page which content is pulled from a data-base on the fly. This content is wrapped into identical hooks for banner ads, a header, footer and navigation bar. Without Zope one sets up a table of content with a link to each ad; each link calls a cgi-script with some id for the data-base in the QUERY_STRING. This requires the script to assemble the page, send the cgi-ahoy (content-type: text/blabla) and the <html> for the page. Is there a Zope-ish way to do this? I have not even found a way to access a page template from a script for reading. The data for Zope-objects seems to be pickled in files.db. Thanks page ______________________________________________________________________ Do you want a free e-mail for life ? Get it at http://www.hotmail.ro/

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ANNOUNCE: Pound - reverse proxy and load balancer - v0.2
by Robert Segall 03 Jun '02

03 Jun '02

This is to announce the release of Pound v0.2. Changes from previous version: - added HTTP/HTTPS request checking. Pound will only accept well-formed requests, thus protecting the back-end server(s) from malicious clients. I believe that this is now good enough to allow a ZServer to run without an Apache/Squid front-end (though you may still want Squid as a cache manager). - added request logging (can still be turned off with a flag). This means that now there is a central log with the correct client addresses. - fixed a few minor bugs. Many thanks to all the people who responded with suggestions and remarks. A few people asked why not simply use Squid rather than Pound. The answer is mostly a question of taste and philosophy: I believe a load-balancer should do no caching. The load-balancer, by its very nature, may become a bottle-neck for the whole system, and thus should be as light-weight as possible. If your application could really benefit from a front-end cache (which is not always the case) then put the caching proxy on the back-end server - e.g. between Pound and Zope - but allow Pound to run alone on a biggish machine. What is Pound (from the Web page) - a reverse-proxy: it passes requests from client browsers to one or more back-end servers. - a load balancer: it will distribute the requests from the client browsers among several back-end servers, while keeping session information. - an SSL wrapper: Pound will decrypt HTTPS requests from client browsers and pass them as plain HTTP to the back-end browsers. - an HTTP/HTTPS sanitizer: Pound will verify requests for correctness and accept only well-formed ones. For further information, download, etc. please see http://www.apsis.ch/pound The software is at version 0.2. Further testing (especially under heavy loads), improvements and bug (what bugs ?) fixes are welcome. Pound is distributed under the GPL. Enjoy and let me know how it works for you. -- Robert Segall Apsis GmbH Postfach, Uetikon am See, CH-8707 Tel: +41-1-920 4904

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Previos post - help with windows authentication
by Greg 03 Jun '02

03 Jun '02

Below is a post from a user who needs very similar things I do. I feel I am exactly in the same boat he is. I want to use Zope to develop an Intranet. Our network is Win 2000 based and it's easy to develop with IIS/ASP and then integrate the authentication of your windows users. Since I found Zope, I have fallen in love with it. It's just way to cool! BUT... I cant get the authentication to work with anything but the built in user folders. Right now, my users can simply open a link on our Intranet sites, and my ASP scripts can determine who they are. I then can use this username to insert into a database or other functions, like printing it on the web page. With Zope, I have to maintain another set of users AND they have to enter a username and password to do the same thing I can do in IIS/ASP. I have tried the same things Sean has. I can see the users, but the authentication wont work. I have tried setting up pcgi through IIS, and letting IIS authenticate me. This would be wonderful if it worked. I can see the initial index_html under the server root. But anything else cannot be retrieved. So, if anyone has any help or could point me(and Sean) in the right direction, please do so! I appreciate any you may have. Thanks! Greg POST from Sean Kelley below ------------------------------------------------ Kelley, Sean SKelley(a)ci.santa-rosa.ca.us Tue, 14 May 2002 16:13:03 -0700 Hi, I have posted a few messages about windows domain level security and zope. I have gotten maybe one no-so-helpful response. I don't know if people don't know or I am forming my question wrong. Here goes another try. background: I am somewhat familiar with basic zope use and canned product installs with good docs but no guru and not familiar with python I want to: build a zope intranet which checks to see what windows group someone belongs to before they can do certain things- aka only my department users can view and add stuff. be able to allow my department users to use intranet without joining (CMF requires one to join for some things) while blocking other departments- this can be differentiated with windows group memberships What I have done so far: installed jcNTUserFolder-0.2.2 but all I could list was the users on local machine that Zope was installed on (not the domain users or groups) I also tried another product which worked with jcNTUserFolder and that claimed to get NT groups also but it broke my basic zope security because it was replacing files at the root zope level (I guess it hacked the main zope security files) I am running: windows 2000 (with some NT users) zope 2.5.1 CMF 1.3b (i may chuck this though if I cannot get the authentication to work well) Any help would be GREATLY appreciated. Products, how-tos, code examples... Sean

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Has anyone used ImageMagick libraries?
by Norman Oblepias 03 Jun '02

03 Jun '02

Hi guys, Does anyone have any sample code they can share that shows how to use the image magick libraries to take an image, resize it and optimize it (color reduce it)? I'm new to all this so any help would be greatly appreciated! many thanks, Norm.

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Catch Unauthorized exception and internal redirect to login DTML doc
by David K. Trudgett 02 Jun '02

02 Jun '02

I'm using exUserFolder to do cookie-based authentication. When a resource is accessed without authentication, an Unauthorized exception is generated. At present, I have a couple of lines in standard_html_header that do an HTTP redirect to the login form: <META HTTP-EQUIV=Expires CONTENT="<dtml-var "ZopeTime()-1" fmt="%Y-%m-%d">"> <META HTTP-EQUIV=Refresh CONTENT="0; URL=&dtml-URL1;/acl_users/redirectToLogin?destination=&dtml-URL;<dtml-if "REQUEST.has_key('authFailedCode')">&authFailedCode=&dtml-authFailedCode;</dtml-if>"> This does a browser redirect to the login form, but not before the visitor sees the error page. How can I get Zope to do an internal redirect to my login form when an Unauthorized exception is generated? Thanks for any tips or pointers! David Trudgett

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