June 1999 - Zope - Zope lists

Devolving the management of users
by Paul Browning 23 Jun '99

23 Jun '99

I can see how I create a role which allows a user to manage other users (and do nothing much else) at a particular folder level (and below). What I can't see is how to prevent a user with such a role creating another user with the "built-in" Manager role and then using this new account to gain any sort of permissions .... No matter what I do the Manager role always seems to be available in the Add user screen. Can this be suppressed? [Why do I want to do this? I want to devolve the management of usernames and passwords of a particular folder but without exposing the contents of other objects in the folders to tinkering .... I can guess I can ask the user(s) with the role not to do anything but reset passwords but you know how people get curious ....] TIA. Paul -- The Library, Tyndall Avenue, Univ. of Bristol, Bristol, BS8 1TJ, UK E-mail: paul.browning(a)bris.ac.uk URL: http://www.bris.ac.uk/

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RE: [Zope] Updating object's modification timestamp?
by Alexander Staubo 23 Jun '99

23 Jun '99

So in order trigger a "modification" I actually have to go modify a dummy property? Okay. For now I'll "touch" pages by calling manage_changeProperties() on some dummy property, but in the long run this isn't good enough. I suggest adding a touch() method that lets you update the time stamp programmatically. Why? Well, in my case I have a front page which uses an SQL database for news, articles, and various things. Whenever an editor posts an article (through a Zope-built management interface), the front page should be "touched"; otherwise Zope will give the wrong Last-Modified date to the browser, and all users will see is the old page. Of course, I could just succumb to a fit of laziness and set Cache-Control: no-cache and forget all about it, but I think caching is a good thing. -- Alexander Staubo http://www.mop.no/~alex/ "It has taken the planet Earth 4.5 billion years to discover it is 4.5 billion years old." --George Wald >-----Original Message----- >From: Brian Lloyd [mailto:Brian@digicool.com] >Sent: 22. juni 1999 18:23 >To: 'Alexander Staubo'; Zope Mailing List (E-mail) >Subject: RE: [Zope] Updating object's modification timestamp? > > >> Is there any way of updating an object's modification timestamp >> (_p_mtime or bobobase_modification_time(), from what I >gather from the >> sources) programmatically through Python? How? > >Sure - just modify the object ;) The modification time reflects >the last time the object was actually modified in the db, and >is _depended on_ by the database, so you should not try to >modify it yourself... > >Brian Lloyd brian(a)digicool.com >Software Engineer 540.371.6909 >Digital Creations http://www.digicool.com > >

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Copying objects programatically?
by Phil Harris 23 Jun '99

23 Jun '99

Hi all, I would like to cop objects from an external method, after 'using the source', I still have no idea how to accomplish this. Any ideas? TIA Phil phil(a)philh.org

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Security: Displaying text based on user permission
by Michael Wang-Helmke 23 Jun '99

23 Jun '99

hi all, I want to be able to create a dtml page where some of the text is only visible to certain Roles of user (Anonymous, Manager, etc). For example:  super secret text  I am learning Zope quickly but am still know. I know Python fairly well. Any ideas? thanks, Michael Wang-Helmke

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ANN: New release of zope4win32
by Anthony Pfrunder 23 Jun '99

23 Jun '99

A new version of Zope for Windows is available at: http://student.uq.edu.au/~s341625 It has been updated to the a3 release and contains my recent patches (see Collecter). For details, see webpage. Cheers, Anthony Pfrunder

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Patch for a Database Adapter expireCache
by Paulo Eduardo Neves 23 Jun '99

23 Jun '99

Hi Zopistas, attached is a very simple patch for a expireCache method for Database Adapters. You should apply it to lib/python/Shared/DC/ZRDB/DA.py The idea is to be able to set very long cache values for ZSQL methods. You should call self.zsqlmethodname.expireCache() after inserting data in your DB. Advantages: o The user that inserts the data will have instant gratification as his modifications are instantly done. o Better performance since you can set higher cache times without your site being outdated. regards, -- Paulo Eduardo Neves mailto:neves@inf.puc-rio.br PUC-Rio de Janeiro 152c152 < ('Use Database Methods', ('__call__',''), ('Anonymous','Manager')), --- > ('Use Database Methods', ('__call__','expireCache'), ('Anonymous','Manager')), 267a268 > self.cache_expired = 0 339c340 < if cache.has_key(query): --- > if cache.has_key(query) and self.cache_expired == 0: 346a348 > self.cache_expired = 0 348a351,356 > > def expireCache(self): > """Expires ZSQL Method cached values > > Next call the database will be really queried""" > self.cache_expired = 1

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Getting to the properties as a sequence or dictionary
by albert boulanger 22 Jun '99

22 Jun '99

I want to write something like: defvar  {  -   }; In order to write something like defvar max_processors { -type int -min 1 -max 24 -default 24 -balloon "Max Processors" -label "Max Processors" }; Where max_processors is a dtml document and the attributes are properties of the document. What is the ???? that is need to access the properties of a document? All examples I have seen explicitly name the properties. I don't want to do it this way since there may be varying properties. (This is part of a tclet script built dynamically from DTML.) Also, is there a utility to take a tarball (say from the export feature of BSCW) and make a zope doc tree from it? Regards, Albert Boulanger aboulanger(a)ldeo.columbia.edu

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ANN: Zope XML-RPC!
by Eric Kidd 22 Jun '99

22 Jun '99

Hello! As some of you may have guessed, I've finally gotten around to implementing XML-RPC for Zope. You can thank the following people: * Jim Fulton of Digital Creations, for adding XML-RPC hooks to ZPublisher and answering my stupid questions. * Fredrik Lundh of PythonWare, for his excellent Python XML-RPC module. * Dave Winer of UserLand Software, who wrote the XML-RPC spec (and who pays my salary). Please give all your thanks to these folks; they really *did* do all of the work. However, I may have plugged their components together incorrectly, so send all the blame and hate mail to me. :-) What is XML-RPC? ---------------- XML-RPC is a very simple RPC protocol that runs over HTTP. The function name and arguments are encoded as XML. XML-RPC isn't the fastest way to call a function on remote server, but it might be one of the easier to understand. (See http://www.xmlrpc.com/ for details.) An XML-RPC request looks like this: POST /z2/ 1.0 Content-Type: text/xml Content-Length: 170 <?xml version='1.0'?> <methodCall> <methodName>test.string_length</methodName> <params> <param> <value><string>foo</string></value> </param> </params> </methodCall> The response looks like this: HTTP/1.1 200 OK Content-Length: 122 Content-Type: text/xml <?xml version='1.0'?> <methodResponse> <params> <param> <value><int>3</int></value> </param> </params> </methodResponse> Fredrik Lundh of PythonWare wrote a very nice XML-RPC library for Python. (See http://www.pythonware.com/products/xmlrpc/ to get a copy.) Using his code, I could call the above function as: >>> import xmlrpclib >>> s = xmlrpclib.Server("http://localhost/z2/") >>> s.test.string_length("foo") 3 In other words, XML-RPC lets you treat a remote Zope object almost like a local Python object. Think of it as a super-simple cousin to CORBA and DCOM, and you'll get the right idea. XML-RPC for Zope ---------------- Thanks to all the aforementioned people, you can now use Zope as an XML-RPC server. It's easy. Here's the source code for 'test.string_length', which is loaded into Zope as an ordinary external method: def string_length(string): return len(string) See what I meant by "easy"? To use XML-RPC for Zope, you'll need to get the latest version of Zope from CVS and read the release notes on UserLand's site: http://linux.userland.com/stories/storyReader$18 Future Directions ----------------- Zope XML-RPC still has a few rough edges. If you discover any bugs which aren't mentioned on the site, or have any ideas for improvement, drop me a line. Thank you to all the people who helped out! Cheers, Eric

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RE: [Zope] how do I calculate a value in DTML ?
by Alexander Staubo 22 Jun '99

22 Jun '99

Here's one way:  Yes, I know, it's a little lame; there should be a way to deal with temporary variables without associating them with REQUEST. -- Alexander Staubo http://www.mop.no/~alex/ "It has taken the planet Earth 4.5 billion years to discover it is 4.5 billion years old." --George Wald >-----Original Message----- >From: zope-admin(a)zope.org [mailto:zope-admin@zope.org]On Behalf Of >Joachim Schmitz >Sent: 22. juni 1999 22:33 >To: zope(a)zope.org >Subject: [Zope] how do I calculate a value in DTML ? > > > >hi, > >this is certainly a silly question, but I don't find an example for it. > >I simply want to do for example: > >i = i + 1 without displaying the value. > >Gruß > >Joachim Schmitz > > > >_______________________________________________ >Zope maillist - Zope(a)zope.org >http://www.zope.org/mailman/listinfo/zope > >(For developer-specific issues, use the companion list, >zope-dev(a)zope.org - http://www.zope.org/mailman/listinfo/zope-dev ) >

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how do I calculate a value in DTML ?
by Joachim Schmitz 22 Jun '99

22 Jun '99

hi, this is certainly a silly question, but I don't find an example for it. I simply want to do for example: i = i + 1 without displaying the value. Gruß Joachim Schmitz

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