September 2000 - Zope

Fwd: Re: [Zope] Why do session vars suddenly disappear?
by Joachim Werner 28 Sep '00

28 Sep '00

Hello! > Maybe it's because I don't understand the Zope mechanisms completely yet, I think so ;-) > but I sometimes have a hard time preserving some variable state between one > and the other web page. This is not possible without additional measures. How should Zope know that you have visited that other web page before? HTTP is a stateless protocol that doesn't per se keep track of your "session". Fortunately there are a couple of so-called SESSION management tools to help you (and in one of the next Zope versions session management will be integrated). Check for products like HappySession or FS Session. They keep track of the users (e.g. by using cookies) and make any variables you store to the session namespace available for later use on other pages. > This happens most often when I call one dtml-method from another one. If the > called dtml-method in its turn also calls some other dtml-method which needs > some dtml-var from the first template, almost inevitably a Zope error screen > appears with some 'unknown variable' or whatever message. For this (getting REQUEST variables transported to another method than the one that was called by the form) there is a procedure that works without sessions. You can just set the variables in the REQUEST for the next page again: E.g. you received a "Name" variable: <dtml-call "REQUEST.set('Name',Name)"> stores the variable to the REQUEST. > I cannot reproduce this fully yet, maybe in my next mail. The same misery > happens when opening a document with frames. The separate frames seem to > hold no knowledge of any previously set vars. see above. For the web server the frameset is just a set of independent HTTP requests. Only with session tracking by cookies, authentication (logins) or special session URLs that hold a user-specific ID this can be handled. > Last but not least with Netscape 6 PR2 there seems to be no session state > possible whatsoever, no matter what I tried. Even a simple form is not able > to pass on its parameters to the receiving dtml-method. ???? Hope this helped. Joachim > Help! > > _________________________________________________________________________ > Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. > > Share information about yourself, create your own public profile at > http://profiles.msn.com. > > > _______________________________________________ > 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 ) -- Iuveno - Smart Communication Joachim Werner _________________________________________ Marie-Curie-Straße 6 85055 Ingolstadt Tel.: +49 841/90 14-325 (Fax -322) Mobil: +49 179/39 60 327 E-Mail: joachim.werner@iuveno.de/joachim.werner@iuveno-net.de WWW: www.iuveno.de/www.iuveno-net.de ------------------------------------------------------- -- Iuveno - Smart Communication Joachim Werner _________________________________________ Marie-Curie-Straße 6 85055 Ingolstadt Tel.: +49 841/90 14-325 (Fax -322) Mobil: +49 179/39 60 327 E-Mail: joachim.werner@iuveno.de/joachim.werner@iuveno-net.de WWW: www.iuveno.de/www.iuveno-net.de

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BTreeFolder (easy?) questions
by Dennis Nichols 27 Sep '00

27 Sep '00

1. Can I blithely use BTreeFolder in place of Folder without loss of functionality? 2. Can I successfully inherit from BTreeFolder in ZClasses (assuming that I uncomment registerBaseClass, which has been commented out in all BTreeFolder versions so far)? -- Dennis Nichols nichols(a)tradingconnections.com

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Icons?
by César A. K. Grossmann 27 Sep '00

27 Sep '00

Hi Where I can find some icons with the correct size to be used in Zope? All the icons I can find have the size of 32x32 or something like it... 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 The nice thing about egotists is that they don't talk about other people. -- Lucille S. Harper

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webdav security
by J�lio Dinis Silva 27 Sep '00

27 Sep '00

Hello all! Lets say that anyone can do ">cadaver www.myhost.com" and after that a ">ls" listing my content. I know the user will see the objects processed, but just the fact that he can see my structure is bad for security. How do I disable the webdav access, if possible? Best Regards, Júlio Dinis Silva _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com.

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Set access rule
by Mario Olimpio de Menezes 27 Sep '00

27 Sep '00

Hi, I did an upgrade last week, from zope 2.1.6 to 2.2.1, using Debian packages. Almost everything was correct, but site access no longer works. My setup is: 1. apache virtual host with rewrite rules: <VirtualHost my_ip_goes_here:80> SSLEngine off ServerAdmin mario@localhost ServerName agilizearede.myserver.com SetEnv SERVER_URL http://agilizearede.myserver.com <IfModule mod_rewrite.c> RewriteEngine on RewriteLog /var/log/apache/rewrite_log RewriteLogLevel 3 RewriteRule ^/static/(.*) /var/www/agilize/$1 [L] RewriteCond %{HTTP:Authorization} ^(.*) RewriteRule ^/(.*) /usr/lib/cgi-bin/Zope/$1 \ [e=HTTP_CGI_AUTHORIZATION:%1,t=application/x-httpd-cgi,l] </IfModule> </VirtualHost> 2. I use pcgi, also used to work, and is working now! 3. each virtual host has its folder and each one its SiteRoot; Zope root has a DTML method that split the HTTP_HOST env. variable and call REQUEST for TraversalRequestNameStack append (from howto). Then I had a access rule in Zope root to call the DTML method. 4. My problem is that I can't no longer add a Access Rule to Zope root. It complains with the following msg: ----------- Zope has encountered an error while publishing this resource. ERROR TYPE: ATTRIBUTEERROR ERROR VALUE: 'STRING' OBJECT HAS NO ATTRIBUTE 'NAME' ---------------- the html source relevant part is:  Can somebody help me to fix this? Any suggestion is very welcome as I'm lost! []s, Mario O.de Menezes "Many are the plans in a man's heart, but IPEN-CNEN/SP is the Lord's purpose that prevails" http://curiango.ipen.br/~mario Prov. 19.21 http://www.revistalinux.com.br

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ZMySQLDA question
by Chris Herrnberger 27 Sep '00

27 Sep '00

Greetings, I aplogize in advance for this nubie question. In a previouse version of Zope I was able to install the mysqlDBA using the binary version of Zope. Currently running Zope 2.2.2 on SuSE 6.4 as a learning exercise. Installing ZMySQLDA on this system work smoothly untill I restart zope. The following errors are posted. chris@boogert:~/zope222 > ------ 2000-09-27T18:03:47 ERROR(200) Zope Couldn't import Products.ZMySQLDA Traceback (innermost last): File /home/chris/zope222/lib/python/OFS/Application.py, line 397, in import_p roducts (Object: string) File lib/python/Products/ZMySQLDA/__init__.py, line 106, in ? File /home/chris/zope222/lib/python/Products/ZMySQLDA/DA.py, line 108, in ? File /home/chris/zope222/lib/python/Products/ZMySQLDA/db.py, line 106, in ? yet the module clearly exists; chris@boogert:/usr/lib/python1.5/site-packages > ls -la total 352 drwxr-xr-x 4 root root 4096 Sep 27 14:03 . drwxrwxr-x 8 root root 12288 Sep 3 15:36 .. -rw-r--r-- 1 root root 10828 Sep 27 14:03 MySQLdb.py -rw-r--r-- 1 root root 16504 Sep 27 14:03 MySQLdb.pyc -rw-r--r-- 1 root root 15557 Sep 27 14:03 MySQLdb.pyo drwxr-xr-x 2 root root 4096 Sep 2 12:48 PIL -r-xr-xr-x 1 root root 99200 Sep 27 14:03 _mysqlmodule.so -rwxr-xr-x 1 root root 175479 Mar 11 2000 gdmodule.so drwxr-xr-x 2 root root 4096 Sep 14 13:33 gvib The interbase connection btw works smoothly. Once I get this up then I'll tackle the postgresql db connector. Any advise would be appreciated. Again the Zope install is a binary from zope.org Best and thanks Chris

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Why do session vars suddenly disappear?
by Roland Reumerman 27 Sep '00

27 Sep '00

Maybe it's because I don't understand the Zope mechanisms completely yet, but I sometimes have a hard time preserving some variable state between one and the other web page. This happens most often when I call one dtml-method from another one. If the called dtml-method in its turn also calls some other dtml-method which needs some dtml-var from the first template, almost inevitably a Zope error screen appears with some 'unknown variable' or whatever message. I cannot reproduce this fully yet, maybe in my next mail. The same misery happens when opening a document with frames. The separate frames seem to hold no knowledge of any previously set vars. Last but not least with Netscape 6 PR2 there seems to be no session state possible whatsoever, no matter what I tried. Even a simple form is not able to pass on its parameters to the receiving dtml-method. Help! _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com.

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Baseclass:Folder or ObjectManager
by brocken22＠gmx.de 27 Sep '00

27 Sep '00

Hallo, my ZClass has as base-class Objectmanager and not Folder. When I try to add(let's call it PastaClass)programmatically PastaClass to an instance of Pastaclass I get a mistake.Adding it with the management-interface everythings o.k.Why?? Do I have to subclass folder?? Thanks. -- Sent through GMX FreeMail - http://www.gmx.net

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Yihaw authorisation pbs
by Didier Georgieff 27 Sep '00

27 Sep '00

Hello Soren, It's me again (sorry to bother you so often). 1 - You report a pb in upload Yihaw Files on 2.2.0 but i have a similar problem under 2.1.6 (fresh install from source) with *both* FAQ and files. Other classes works fine. I have a Yihaw user has Access content, Add Yihaw Objects, Add Yihaw Tops, Delete Objects, Manage Yihaw Objects, Manage Properties, Use Mailhost. Adding FAQ or files makes an authorisation error and prompt for the login windows. +++ If i do an ESC, i have a traceback with : "Unauthorized "You are not authorized to access YihawFAQItem. "YihawFAQItem.createInObjectManager(REQUEST['id'],REQUEST)) "(Info: YihawFAQItem) +++ If i give my manager login,it works fine. Do i forgot some Permissions for the Yihaw user ? Is it 2.1.6 related ? 2 - On your readme.txt you say that for having a control on Approval on news items we have to swich off "manage yihaw objects". It seems that if I do this i'm unable to add any objects. Am i right ? If it's a problem, i'm thinking about just adding a ZopePermission for the Review in the Product/YihawDirectory, and test it in "send_notifications" and other needed methods instead of "manage yihaw objects". Is it the right way to get a finer control ? Thhaks in advance. -- Didier Georgieff DDAF du Bas-Rhin - Cellule SIG 2, rue des Mineurs 67070 Strasbourg Cedex tél : 03.88.25.20.33 - fax : 03.88.25.20.01 email : didier.georgieff(a)agriculture.gouv.fr SIT du Bas-Rhin : http://www.bas-rhin.sit.gouv.fr GéoWeb http://sertit10.u-strasbg.fr

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Where the ZODB resides?
by Ryan Booz 27 Sep '00

27 Sep '00

Thank you for the help yesterday some of you gave me with regards to the Zope DB and how files are stored and such. I obviously have A LOT of reading to do. But I'm excited about it. The only other question I have before diving in to the point of no return, is where Zope can be installed. Currently I have it in the /usr partition of my web server. However, since this computer is only intended to be a web server, most of the 12 GB HD is for "web space". Where I'm putting accounts for school and such. So, if the ZODB is actually stored in the Zope directory, it probably won't be long before it runs out of space. Is it OK, to put it into the "web" partition so that it has plenty of space to grow? I only ask because I remember reading somewhere that it shouldn't be placed where httpd can get to it or something. Thanks for the help again! Ryan Booz Belleville Mennonite School Tech Coordinator

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