November 2000 - Zope

RE: [Zope] Python Script demo site
by Steinar Rune Eriksen 26 Nov '00

26 Nov '00

Would it be useful to (or rather, is it possible to) let one of these scripts call up another one ? I tested the Python script object; and it looks really nice for letting end users extend a server installed system over the Web link. In my test, I needed lists of data from a second script as input, and since I did not find a way of calling this second script directly from my main script, I assigned lists in DTML and forwarded them from there. Any better way ? We develop risk management systems, and we some of our customers override the default algorithms. <dtml-let lstPrices=GetMarketPrices lstEvalPeriods=GetEvalPeriods> <dtml-try> <dtml-with AlgorithmsUser> Price (user's algorithm)= <dtml-var "MarketFix(lstEvalPeriods,lstPrices)"> </dtml-with> <dtml-except> <dtml-with AlgorithmsDefault> Price (default algorithm)= <dtml-var "MarketFix(lstEvalPeriods,lstPrices)"> </dtml-with> <dtml-else> </dtml-try> </dtml-let> > -----Original Message----- > From: Evan Simpson [SMTP:evan@digicool.com] > Sent: 23. november 2000 02:51 > To: Zope User Maillist > Subject: [Zope] Python Script demo site > > A few announcements. First, in the interests of sanity and > getting things moving, I'm choosing the only name other than > "Python Method" to get a positive score in the naming poll. > I like it, Guido likes it, the community sort of likes it, > so it's official. Zope 2.3 will introduce "Python Script" > objects. > > There will be no "Unrestricted" vs. "Restricted". If you > want to write unrestricted code, you can use a good old > External Method, or write a small module and import it in a > Script object. > > Finally, if you want to give Python Scripts a try, you can > now play with them without any CVS, installation, or Zope > version worries. Go to http://ps.4-am.com:9000/ , pick a > password, and you'll get your own private area in a trunk > CVS checkout of Zope in which to play. > > I plan to add example Scripts, but for now there's just the > raw Zope management interface. When I add examples, I'll > announce it here on the Zope list. > > Cheers, > > Evan @ digicool & 4-am > > > _______________________________________________ > Zope maillist - Zope(a)zope.org > http://lists.zope.org/mailman/listinfo/zope > ** No cross posts or HTML encoding! ** > (Related lists - > http://lists.zope.org/mailman/listinfo/zope-announce > http://lists.zope.org/mailman/listinfo/zope-dev ) ********************************************************************** 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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Python Script demo site
by Evan Simpson 26 Nov '00

26 Nov '00

A few announcements. First, in the interests of sanity and getting things moving, I'm choosing the only name other than "Python Method" to get a positive score in the naming poll. I like it, Guido likes it, the community sort of likes it, so it's official. Zope 2.3 will introduce "Python Script" objects. There will be no "Unrestricted" vs. "Restricted". If you want to write unrestricted code, you can use a good old External Method, or write a small module and import it in a Script object. Finally, if you want to give Python Scripts a try, you can now play with them without any CVS, installation, or Zope version worries. Go to http://ps.4-am.com:9000/ , pick a password, and you'll get your own private area in a trunk CVS checkout of Zope in which to play. I plan to add example Scripts, but for now there's just the raw Zope management interface. When I add examples, I'll announce it here on the Zope list. Cheers, Evan @ digicool & 4-am

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How to checkout PythonMethod from CVS
by Milos Prudek 26 Nov '00

26 Nov '00

How can I checkout PythonMethod from cvs? I tried to modify the "Zope2" in the following command: cvs -z7 -d :pserver:anonymous@cvs.zope.org:/cvs-repository checkout Zope2 (Zope2/PythonMethod, Zope/PythonMethod, Zope/DC/PythonMethod, Zope/Products/PythonMethod and countless other combinations) -- Milos Prudek

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Authenticating Users.
by Jason C. Leach 26 Nov '00

26 Nov '00

hi, How can I authenticate a user from a form. Pretty much exactly how zope.org logges you in? I have looked at both zope.org's login and logged_in (the action for login) and don't see where it actually goes and checks the username/password? The only twist with my setup is, the are authenticating from a acl_users that is in a sub-folder, not the main site's acl_users. Thanks, j. ...................... ..... Jason C. Leach ... University College of the Cariboo. ..

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Zope, squid, the Host header
by Dennis Nichols 25 Nov '00

25 Nov '00

The "How-To: Configuring Squid as an Accelerator for Zope" (http://www.zope.org/Members/htrd/howto/squid) by htrd doesn't entirely work for me and/or is over my head! My goal is to use Squid as an http accelerator in front of zope (using zserver, no apache) on the same machine. Secondary goal is to be able to access Zope directly also, but this is much less important. An alternate How-To by itamar (http://www.zope.org/Members/itamar/Squid) requires the use of SiteAccess, which I would like to avoid. Squid seems to be running OK (listening on port 8070, connecting to zope on port 8080) but wrestling with zope about the Host header has not yet produced a winner. Specifically, the How-To says: "If you will be always be accessing this Zope server through the accelerator then the easiest solution is to configure Zope to ignore the value of this header. Specify HTTP_HOST=www.myhost.com as either a command-line parameter to z2.py, or as an environment variable." I translate this to mean I could set and then export an environment variable that in my case would be HTTP_HOST=www.myhost.com:8070 since that's where the server should appear to be to the browser client. For whatever reason, this is not effective. I can tell because zope still works fine directly on port 8080 (through port 8070 I get the requested document, no images, and the baseref is still at port 8080). Inspection of HTTPRequest.py shows that it does a if have_env('HTTP_HOST'): host = strip(environ['HTTP_HOST']) hostname, port = splitport(host) and sees www.myhost.com:8080. Specifying the HTTP_HOST= on the command line has the same (non-) effect. I'd be pretty happy if I got either of those to work. I'd be even happier if I got the following to work, also quoted from the htrd How-To: "A better solution is to get Squid to rewrite the header to the correct value: 1. Compile squid using --disable-internal-dns. 2. Add a mapping from the name of your public server to the IP address of your Zope server in /etc/hosts 3. If you are running the Zope server on the same machine as the accelerator then: 1. Change the http_port line in squid.conf to bind only on the public network interface. 2. Use the -w switch to Z2.py to get Zope to bind to different network interface (possibly a loopback interface). Remember to change httpd_accel_host in squid.conf too. (Thank you to Henrik Nordstrom for showing me that solution.)" But I really don't understand this method... 1. OK, I know how to do the compile 2. /etc/hosts seem to map the other way, from the IP address of whatever to a name and some aliases. Does this mean that I should have a line 111.222.111.222 myhost.com myhost or is something else implied. 3.1 meaning "http_port myhost.com:8070" ? 3.2 this means? All help sincerely appreciated. -- Dennis Nichols nichols(a)tradingconnections.com

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Re: [Zope] view DTML source
by Dieter Maurer 25 Nov '00

25 Nov '00

Anders Eriksson writes: > ... view source traceback ... > (Object: standard_html_header) > AttributeError: __call__ That is very strange as "standard_html_header" does have a "__call__" method. Thus, I can not tell you, why you see this behaviour. However, you may use "document_src" directly in the URL. I.e. you do not need a special DTML method 'view_source". Try something like this: http:..../index_html/document_src I know, it would be nicer to use "view_source" but .... Dieter

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Help System Menu patch
by Bill Anderson 25 Nov '00

25 Nov '00

After working with the Zope help System a bit, I got very annoyed that there was no consistent ordering to the tree. For example, you could repeatedly click the contents tab link, and watch it reorganize itsself. Attached is a patch that sorts everything by id. Why id? Because then I can make my help menu item id's a numeric sequence, and put the topics in a specific order. Example: Membership Overview Membership Conventions Rather than the order being random. Attached is the patch. patch from the Zope root directory. Once applied, you *don't* need to restart zope to see the change. Bill Anderson -- E PLURIBUS LINUX --- lib/python/HelpSys/menu.dtml Sat Nov 25 13:22:45 2000 +++ lib/python/HelpSys/menu.dtml-new Sat Nov 25 13:19:51 2000 @@ -2,7 +2,7 @@ <dtml-call "REQUEST.set('MANAGE_TABS_NO_BANNER',1)"> <dtml-var manage_tabs> -<dtml-tree> +<dtml-tree sort=id> <dtml-if "meta_type =='Help Topic'"> <a href="<dtml-var absolute_url>" target="help_main"><dtml-var title_or_id></a> <dtml-else>

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user-owned products?
by Kyler B. Laird 25 Nov '00

25 Nov '00

Over the last few months I've been getting much more comfortable advocating Zope as our supported Web application environment. I'm *finally* getting around to building my own products, however, and I just realized how limited they appear to be. It *seems* that Zope products are at the evolutionary point that CGI handling was years ago. Remember when we had to use "cgi-bin" for a CGI script? Any user who wanted to run a script would require some setup by the admin. Then we got smart and got rid of cgi-bin directories and put CGI scripts where they belong - in the hands of the user (and in the users' directories along with everything else). Looking at Zope products, I see this happening again - only worse. Instead of simply creating a directory for someone to fill with CGI scripts, I have to personally maintain every product that anyone wants to add to the Control Panel (or give that person way too much authority). Also, every product will be available to every user. With tens of thousands of developers working on their own projects, this is *not* a Good Thing. [Is there/Will there be] a way to allow users to create their own products for their own use? I want people to freely whip up ZClasses and use them throughout their sites. I don't want them to bother me or other users with their creations. I haven't tried Python methods yet, but from what little I've picked up about them, I think they will be a huge step forward in giving users safe power. This doesn't solve the products issue, though, does it? Can a user make his own class without other users seeing it? Any insight will be appreciated. Thank you. --kyler

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RE: BSD 4 installation
by Webmaster 25 Nov '00

25 Nov '00

I haven't solved my BSD problem but I did discover that there are BSD ports of Zope and Zope products maintained at http://www.freebsd.org/cgi/ports.cgi?query=zope&stype=all I haven't been able to get the port to work yet but I suspect that it's because I don't have root access to the server. That will have to wait till Monday when the *senior* tech support guys are on duty. I called my webhost tech support last night and I happened to ask which version of BSD they used. The 'technician' replied, and I quote: "BSD? What does that do? I've never heard of it." I pointed out that BSD was the version of Unix on all his host servers. At least he made me feel like less of Unix newbie. :) Lee Hunter Hum Communications Ltd. > -----Original Message----- > From: Lee Hunter [mailto:lee.hunter@hum.com] > Sent: November 24, 2000 3:50 PM > To: 'zope(a)zope.org' > Subject: BSD 4 installation > > > I'm trying to build Zope on a BSD server. > > According to the install.txt I have to run two commands - > "python w_pcgi.py" and "./start". > > I managed to get the first command to run (python w_pcgi.py) > after editing my Makefile.pre.in and do.py as per the FAQ.txt. > > But when I when I run the second command (./start) I get the > following error message: > > media2: {38} % ./start > Traceback (innermost last): > File "/magma/users/u21/wake/zope/z2.py", line 554, in ? > exec "import "+MODULE in {} > File "<string>", line 1, in ? > File > "/magma/users/u21/wake/zope/lib/python/Zope/__init__.py", > line 94, in ? > import ZODB, ZODB.ZApplication, imp > File > "/magma/users/u21/wake/zope/lib/python/ZODB/__init__.py", > line 85, in ? > import sys, ExtensionClass, TimeStamp, cPersistence, Persistence > ImportError: No module named ExtensionClass > > Any ideas as to what I'm doing wrong? > > TIA > > Lee Hunter > Hum Communications Ltd. > >

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Problem with 2.2.4b1
by Menard.Jean-Francois＠hydro.qc.ca 25 Nov '00

25 Nov '00

I installed 2.2.4b1 over 2.2.3, and everything seems to work fine, but, when I IE5.5 to manage my sites, I loose some icons and graphics (not all!). But, if I clear my cache, The icons reappears, but only for a while! Am I the only only experiencing this problem? Jean-François Ménard Intranet DPAS Pratiques d'affaires et orientations * (514) 840-3000 poste 3939 * (514) 840-5585 * menard.jean-francois(a)hydro.qc.ca * 855 Ste-Catherine est, 6e étage Montréal, Qué. H2L 4P5

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