- Zope - Zope lists

Multiple selections
by Alexander Limi 10 Dec '99

10 Dec '99

Zopistas, Can anybody give me an example of how to use multiple selections? (the data type, that is). I searched all my Zope docs, and it was only mentioned one place in the Zope quick reference, but no usage examples. Where does it get its possible selections from? And will it be rendered as a multiple selection field? Thanks in advance. Alexander Limi http://mp3.no

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RE: [Zope] Zope stability
by Theodore Patrick 10 Dec '99

10 Dec '99

>> Version Control and Development Option 1 - VERSION OBJECT There is an object called a version that will take existing zope code and copy it into a protected space for development work. You can test a version seamlessly and then roll your changes forward or undo them. It is a handy way to edit a ZOPE site live and not affect operation until development is complete. It is a rather hidden feature and easy to miss. Option 2 - CUT, PASTE AND RENAME You could also just copy your work folder into another folder work on it and them merge the code by simply changing the name of the folders. That would immediately route request to the new root/folder. If you have issues you can easily undo the changes in the control panel. Typically for us work is done progressively on areas of the Zope site, change a form here, change a SQL method there. It tends to make the process easier to just make a copy of the dependent objects and modify and test the code in an temp folder. Option 3 - Production Server - Development Server This model has worked well for us. As you can run Zope on any capable workstation, it makes sense to do large development work in this model an move the projects into a staging area for testing and deployment. Option 4 - Make Backup/Archive/Version of your ZOPE ODB Weekly we make a copy of the ZOPE ODB for backup and archive purposes besides our daily backups. If we ever need old code we have a version that we can put on any development server and retrieve the contents. It is a very convenient way to manage the overall development process. With every dot release of your code make a copy of the ODB. They tend to compress really well and as they are 1 file make things easy. Make sure to compress the ODB before you make a version, It tends to improve the performance of the database and make your code smaller as it eliminates all changes stored in the Database. Hope this helps although there are many different ways to work with Zope these are the most useful for us. Theodore E. Patrick Ishophere.com

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ZSQL optional variables?
by Ulrich Wisser 10 Dec '99

10 Dec '99

Hello, in ZSQL I would like to make some test optional. Here a small example: SELECT * DEMO <dtml-sqlgroup where> <dtml-if var1> <dtml-sqltest var1 type=int> </dtml-if> <dtml-and> <dtml-if var2> <dtml-sqltest var2 type=string optional> </dtml-if> </dtml-sqlgroup> No I want it to take var1 and var2 from the REQUEST or from arguments specified at dtml-call or no argument at all. 1. my.url?var1=5 2. <dtml-in "zsql_method(var1=5)"> 3. <dtml-in zsql_method> I tried to define arguments in the ZSQL form, but then I need to gibe var1/var2 as arguments (but I want them to be optional). When I tried to give default values like (var1:int=0) the <dtm-if var1> always eval to true so that the SQL statement tests for var1. How can I make arguments to ZSQL fully optional? Thanks Ulli -- ----------------- Die Website Effizienzer ------------------ luna-park Bravo Sanchez, Vollmert, Wisser GbR Ulrich Wisser mailto:u.wisser@luna-park.de Alter Schlachthof, Immenburgstr. 20 Tel +49-228-9654055 D-53121 Bonn Fax +49-228-9654057 ------------------http://www.luna-park.de ------------------

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publishing headlines
by Timothy Wilson 10 Dec '99

10 Dec '99

Hi everyone, I've installed Edd's SiteSummary product and have it displaying headlines. I'd like to use some news from some of the bigger news sites (e.g., ABC, AP, BBC, National Enquirer :-) Does anyone know of any large news sites that make their RSS files freely available? -Tim -- Timothy Wilson | "The faster you | Check out: Henry Sibley H.S. | go, the shorter | http://slashdot.org/ W. St. Paul, MN, USA | you are." | http://linux.com/ wilson(a)visi.com | -Einstein | http://www.mn-linux.org/

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Trouble accessing posted variables outside namespace
by Doug Goodwin 10 Dec '99

10 Dec '99

Hey Zope fans, I'm having trouble with variables. My user has just submitted a registration form and I want to do the following things: 1. Check to see if the posted email address exists in my users table | |--If so, send a email message reminding them of their username & passwd | |--If not, insert the posted variables into the dB & send welcome email I'm having trouble accessing variables I can use outside of the <dtml-in ...></dtml-in> namespace. IS there a way to create a global array, stuff all the form info into it on hitting the page and then manipulate items within the array with methods? That would be way cool. Thanks in advance -- the code fragment follows. -Doug Goodwin dgoodwin(a)cairn.com Here's a code fragment: <dtml-call "REQUEST.set('userexists', 'UNKNOWN')">   <dtml-call checkemail> <dtml-in checkemail> <dtml-if expr="username == '' "> <dtml-with REQUEST>  <dtml-call "REQUEST.set('username', username)"> <dtml-call "REQUEST.set('password', password)"> <dtml-call "REQUEST.set('userexists', 'FALSE')"> </dtml-with>  <dtml-else> <dtml-with REQUEST> <dtml-call "REQUEST.set('userexists', 'TRUE')"> </dtml-with>  </dtml-if> </dtml-in> <dtml-if expr="userexists == 'TRUE' "> Forgotten your password? Check your email box for a reminder.  <dtml-else> <h1>Thank you for registering!</h1> <p> Your username is <dtml-var email> You will be receiving an email message with your password for 3Dmodelserver.com   </dtml-if>

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Philosophical question - Zope Objects vs Entities in a RDBMS
by Rowan Hick 10 Dec '99

10 Dec '99

Okay so I'm getting into this whole Zope deal, and from what I have seen so far it looks pretty darned good, I like the OO concept, but with it it poses a few design issues for websites / web applications Traditionally all data is stored in some form of relational database, and then the scripts pull it back out again. Now we all know and hate relational databases (well I do anyway as I'm a child of the information age - learning in OO concepts and then having to go back to a relational database) but they are remarkably good for what they do - storing large amounts of data and allowing you to retrieve it in a quick and relatively painless manner, if you get your head around SQL. Now Zope comes along with the ability to create and persist objects without the need for a relational database. Wooohooo... all my prayers have been answered, or have they?. Q1. Has anyone tried to build webapplications with large (maybe into the 10's of thousands) numbers of Zope objects? Q2. How much more or less efficient is Zope for storing a piece of data over a traditional relational database ? Q3 (I'm a newbie here) Can a python external method access Zope objects ? Eg if I create a task object from a ZClass can I then do things with it from a python script? Q4. I think I remember seeing a post about the Zope database being a single large file posing problems with the Linux filesystem.. or was that the windows filesystem.. if so then that could limit Zope's potential in a commercial production enviroment, surely ?? If this is true what have people done to try and get around this, ie archiving objects (however that could occur) etc.. ? Thanks in advance for any responses, Rowan Hick Business Analyst Soft Tech NZ LTD, Auckland, New Zealand.

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RE: [Zope] reality check
by Brian Lloyd 10 Dec '99

10 Dec '99

> >> While it hurts, it's not far from the truth. Have you > considered putting a > >> guy/gal on documentation exclusively? In the projects I > have encountered in > >> real life (if I can be said to have such a thing ;), I've > found this provides > >> the most consistent and best documentation. A person who's > only job is to > >> interact with the staff and provide legible information on > what they > > produce is > >> a godsend. As Chris P. mentioned in a previous post, we do have a FT technical writer on staff. The key word here is _a_ :^) Zope is a fairly large subject. Much of the recent improvement in docs is due to Pam's efforts, but there is a limit to what any one person can accomplish. Please understand that this is _not_ an excuse - it is something that we understand painfully well, which is why Pam, Amos and Rob have been putting so much work lately into a documentation strategy that will allow us to coordinate and make the most of both internal resources and the efforts of the Zope community. The new docs process will allow motivated Zopistas to take ownership of various doc efforts and work hand-in-glove with the DC effort with a minimum of pain and overhead. Believe me, we are _not_ turning a deaf ear toward the community's documentation concerns - we have probably just not been vocal enough about what we are doing about it. The DC docs tiger team here has just about finished a strategy which will allow us to partition the docs in way that not only allows us to better keep up with docs internally but also lets the community take the lead on areas of concern to them without us holding them up. I expect that there will be an announcement regarding this quite soon, so hang in there! Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

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Setting permissions on File-Objects
by Ingo Assenmacher 10 Dec '99

10 Dec '99

Hello. I am currently using Zope with the following configuration: Zope Version 2.1.0 (latest www.zope.org tarball) Linux 2.1.10 ZServer I have created some folders and uploaded some files to this one. After that I clicked on the file icon and after that I tried to change security parameters for that file. After submitting ANY change I get the following: Zope has encountered an error while publishing this resource. Error Type: AttributeError Error Value: tag [snip] Traceback (innermost last): File /opt/Zope-2.1.0-linux2-x86/lib/python/ZPublisher/Publish.py, line 214, in publish_module File /opt/Zope-2.1.0-linux2-x86/lib/python/ZPublisher/Publish.py, line 179, in publish File /opt/Zope-2.1.0-linux2-x86/lib/python/Zope/__init__.py, line 202, in zpublisher_exception_hook (Object: test_file) File /opt/Zope-2.1.0-linux2-x86/lib/python/ZPublisher/Publish.py, line 165, in publish File /opt/Zope-2.1.0-linux2-x86/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: manage_changePermissions) File /opt/Zope-2.1.0-linux2-x86/lib/python/ZPublisher/Publish.py, line 102, in call_object (Object: manage_changePermissions) File /opt/Zope-2.1.0-linux2-x86/lib/python/AccessControl/Role.py, line 247, in manage_changePermissions (Object: test_file) File /opt/Zope-2.1.0-linux2-x86/lib/python/AccessControl/Permission.py, line 171, in setRoles AttributeError: (see above) [snip] a) What does that mean? b) Have I done something wrong? I would like to point out that this error does even occur when I just push the "change" button without changing anything! Thanks for your help, regards, Ingo. ------------------------------------------

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Re: [Zope] community server
by Markus Jais 10 Dec '99

10 Dec '99

hi, maybe my first message was a bit misleading. I really ment, if there is a product for download called community server. markus Sean Treadway wrote: > I believe www.zope.org is the community server. If you create a profile > by "joining" Zope.org then go to the personalization page at > http://www.zope.org/Members/<your nick>/update_html there will be an > option to "manage items in your personal folder". This will drop you > into the familiar Zope management interface. > > HTH, > Sean > > Markus Jais(mjais@linux-ag.de)@Fri, Dec 10, 1999 at 11:30:12AM +0100: > > hi, > > > > I have heard that there should be something called "community server" > > for zope. > > but I can not find anything at www.zope.org > > does anybody know, if something like this exists. > > a url would be very nice. > > > > thank you > > > > markus > > > > > > _______________________________________________ > > 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 )

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Personal Folder
by Ingo Assenmacher 10 Dec '99

10 Dec '99

Hello! I have seen that it is possible to install some kind of "personal home" folder for Members of a site. My questions are: a) where can I get some information on how these are established (including login) b) is it possible to create "private pages" depending on the authorization of a user (and how is this done?) I want to create something like a forum where different users can share documents via up- and downloading, but these pages should not be accessible by anonymous users. Thanks for your help, regards, Ingo. ------------------------------------------

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