October 2000 - Zope - Zope lists

ANNOUNCE mailForm 1.0 beta
by Max Møller Rasmussen 05 Oct '00

05 Oct '00

I have made a zClass product for making mailforms with simple validation easy. Se more in the How-To at: http://www.zope.org/Members/maxm/HowTo/mailForm/index_html download the zClass at: http://www.zope.org/Members/maxm/HowTo/mailForm/products/mailForm/view regards max

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RE: [Zope] database connection problem (halting Zope)
by Hrasky Petr 05 Oct '00

05 Oct '00

Yes, it is indeed the same here and in Spain, thankfully. I have read the DARoadmap already. And thanks to Ayhan Ergul <ergul(a)acm.org> I now have binaries for OracleDA which works as supposed - i.e. fine. Is there somebody with nt binaries of SybaseDA? I will probably get it running on Linux anyway, but for now I have to use NT. Best regards, Petr Hrasky -----Original Message----- From: Francisco José Esteban Risueño [mailto:fjesteban@uco.es] Sent: Thursday, October 05, 2000 12:01 PM To: Hrasky Petr Cc: 'zope(a)zope.org' Subject: Re: [Zope] database connection problem (halting Zope) In this document: http://www.zope.org/Members/petrilli/DARoadmap the behaviour of different database adapters in a multithreaded environment is discussed. We've observered in our Zope instalation that a long query via ZODBCDA halts (this is similar in the Czech Republic and in Spain). Howerver, if we issue the same query via ZOracleDA, the server still responds while the quere is executing (like a multithreaded server should do) Hrasky Petr escribió: > thanks again, > yes, the python versions I use are compiled for threads, they link > against libpthread under linux. I have also found ZmxODBCDA adapter and > it does not work for me yet - it shows in Zope as broken product. > I also spoke to local Oracle hotline and they said that ODBC access is > not thread safe until 8.1.6.1.1 due to some error in OCI libs. Now I am > downloading Oracle for Linux and Sybase for Linux and I will try to > compile OracleDA and SybaseDA. > > Thanks a lot all. > > Regards, > > Petr > > -----Original Message----- > From: Dieter Maurer [mailto:dieter@handshake.de] > Sent: Tuesday, October 03, 2000 11:17 PM > To: Hrasky Petr > Cc: 'zope(a)zope.org' > Subject: RE: [Zope] database connection problem (halting Zope) > > Hrasky Petr writes: > > thank you for answers. To clarify: > > I run Zope-2.2.2/Linux2.2.14/MySQL-ZMySQLDA1.1.3nonbin at home and > > Zope-2.2.2-binary/NT4.0Workstation/ZODBCDA3.1.0b2 (Oracle 8i ODBC, > > Sybase11.5)at work. Oracle connection at work and MySQL (at home just > > for testing) run looong queries and halt Zope. I have no such queries > > for Sybase yet. > > I will try to recompile python for linux, but I can't do so for > WinNT > > as I have no compiler. Anyway I thought the python distributed with > > binary release of Zope is threaded, no? > If Python is compiled without threads, there is no module > "thread". Zope relies on this module. It dies immediately, > if it is not there. Thus, you can be sure, your > Python has thread support compiled in. > > > So, does anybody know of either binary and threaded Zope driver for > > Oracle , Sybase etc. or the same ODBC driver? And what is the state > of > > python threading on WinNT paltform? > The Python that comes with Zope has thread support compiled in. > > Maybe, your Python-ODBC connection "forgets" to release > Python's interpreter lock. > > We, once, had such a problem. > Accidentally, the DCOracle module had been set up with a standard > Python distribution (with threading disabled) rather > than the Zope Python. As a consequence, the > DCOracle did not call "releaseLock" and > "acquireLock" (as they would not be present > in a non-threaded Python). > And, of course, database operations blocked Zope. > > Dieter > > _______________________________________________ > 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 ) > > _______________________________________________ > 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 ) _______________________________________________ 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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Detecting Roles not working
by Jonathan Cheyne 05 Oct '00

05 Oct '00

Hi all I have built the basis of a site with full, form-based webediting of objects. Coming round to cleanup time and I wanted to remove certain visible functions from the default object views unless you have already logged in (with various possible roles) in the index_html of my zclass i have <dtml-if "AUTHENTICATED_USER.has_role('Staff')"> <a href="<dtml-var absolute_url>/<dtml-var type>edit">edit this</a><hr> </dtml-if> so if the user is anonymous or logged in without the Staff role assigned they should not see the "edit this" link ... Doesn't work! It basically never returns a 'true' response thus never displays the edit this link even when logged in. Tried various permutations and variations on this theme without any success. Help! Without this, I am not sure how to customize the interface for different user groups. I am on 2.2.0 but I think it was similar under 2.1.6. Absolutely any clues no matter how obscure would be gratefully received (or indeed the glaringly obvious solution etc :-) Cheers Jonathan

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RE: [Zope] database connection problem (halting Zope)
by Hrasky Petr 05 Oct '00

05 Oct '00

thanks again, yes, the python versions I use are compiled for threads, they link against libpthread under linux. I have also found ZmxODBCDA adapter and it does not work for me yet - it shows in Zope as broken product. I also spoke to local Oracle hotline and they said that ODBC access is not thread safe until 8.1.6.1.1 due to some error in OCI libs. Now I am downloading Oracle for Linux and Sybase for Linux and I will try to compile OracleDA and SybaseDA. Thanks a lot all. Regards, Petr -----Original Message----- From: Dieter Maurer [mailto:dieter@handshake.de] Sent: Tuesday, October 03, 2000 11:17 PM To: Hrasky Petr Cc: 'zope(a)zope.org' Subject: RE: [Zope] database connection problem (halting Zope) Hrasky Petr writes: > thank you for answers. To clarify: > I run Zope-2.2.2/Linux2.2.14/MySQL-ZMySQLDA1.1.3nonbin at home and > Zope-2.2.2-binary/NT4.0Workstation/ZODBCDA3.1.0b2 (Oracle 8i ODBC, > Sybase11.5)at work. Oracle connection at work and MySQL (at home just > for testing) run looong queries and halt Zope. I have no such queries > for Sybase yet. > I will try to recompile python for linux, but I can't do so for WinNT > as I have no compiler. Anyway I thought the python distributed with > binary release of Zope is threaded, no? If Python is compiled without threads, there is no module "thread". Zope relies on this module. It dies immediately, if it is not there. Thus, you can be sure, your Python has thread support compiled in. > So, does anybody know of either binary and threaded Zope driver for > Oracle , Sybase etc. or the same ODBC driver? And what is the state of > python threading on WinNT paltform? The Python that comes with Zope has thread support compiled in. Maybe, your Python-ODBC connection "forgets" to release Python's interpreter lock. We, once, had such a problem. Accidentally, the DCOracle module had been set up with a standard Python distribution (with threading disabled) rather than the Zope Python. As a consequence, the DCOracle did not call "releaseLock" and "acquireLock" (as they would not be present in a non-threaded Python). And, of course, database operations blocked Zope. Dieter _______________________________________________ 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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Accessing a Zclass' method needs authentication of the superuser
by Nico Grubert 05 Oct '00

05 Oct '00

hello, i created a zclass "myzclass" inside a product "myprod". inside of the zclass i created a dtml-method "mymethod_html" which can be found by the tab "Methods". in the root folder i have created a dtml-method "gimme_html" conatinintg the following code to access the method "mymethod_html" : <dtml-with "manage_addProduct['myprod']"> <dtml-with "myzclass"> <dtml-var "gimme_html"> </dtml-with> </dtml-with> this code will bring me up a login-screen. i am logged in as manager with the role Manager. i have no permission to access "mymethod_html". WHY ? WHERE DO I HAVE TO DEFINE THAT ? when i type in "superuser" and the password for the superuser I DO HAVE access to the dtml-method "mymethod_html". I use Zope 2.2.0. In zope 2.1.6. i do not get any login screen when i am trying to access "mymethod_html". thank you in advance, nico

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LDAP won't work - yes I've applied the patch
by Roman Milner 05 Oct '00

05 Oct '00

I'm trying to get ldap methods to work with 2.2.2. I can access the attributes of the objects returned from an ldap method with a python extension fine, but dtml-in'ing the returned list doesn't work. I keep getting an error (traceback below). Any ideas? Thanks, ^Roman Your action caused an unknown error to occur. <!-- Error Type: KeyError Traceback: Traceback (innermost last): File /home/ThePoint/lib/python/ZPublisher/Publish.py, line 171, in publish File /home/ThePoint/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: ltest) File /home/ThePoint/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: ltest) File /home/ThePoint/lib/python/OFS/DTMLMethod.py, line 172, in __call__ (Object: ltest) File /home/ThePoint/lib/python/DocumentTemplate/DT_String.py, line 528, in __call__ (Object: ltest) File /home/ThePoint/lib/python/DocumentTemplate/DT_In.py, line 691, in renderwob (Object: ldap_user(uid='rmilner')) KeyError: cn

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WDDX anyone?
by Albert Boulanger 05 Oct '00

05 Oct '00

Has anyone considered WDDX for Zope? This seems like a nice next step to exchanging data beyond RSS, but not as ambitious as SOAP and has SDKs for CF, perl, etc. I have some applications in mind for intranet syndication that goes beyond what RSS can do. Also there is full rdf. From: http://www.wddx.org/ Welcome to WDDX.ORG, the home of the WDDX SDK and related projects. WDDX.ORG seeks to empower Web developers with technology that enables them to create new forms of value on the Internet using distributed data and Web syndicate networks. The Web Distributed Data Exchange, or WDDX, is a free, open XML-based technology that allows Web applications created with any platform to easily exchange data with one another over the Web. To learn more about WDDX, check out the Understanding WDDX section of the site. Who created WDDX? Allaire created WDDX in order to solve key problems in exchanging data between Web applications. In particular, Simeon Simeonov, Allaire's language technology architect, created WDDX to support problems of distributed computing within ColdFusion. This work was generalized into a cross-language framework, and resulted in the creation of the WDDX SDK and WDDX.org. The WDDX SDK was created by Nate Weiss, an independent Web developer, with the support of Allaire and a number of other third parties. How does WDDX work? All of the standard programming environments on the Web (ColdFusion, Perl, ASP, Java, JavaScript, PHP, etc) include native data structures such as arrays, record sets or value pairs. WDDX provides a module for each language that will automatically serialize or translate the native data structures into an abstract representation in XML, or deserialize WDDX XML into a native data structure. For example, you could use WDDX to take a complex array in ColdFusion, serialize it into XML, send it to an ASP server, and then deserialize from XML into a VBScript array object with all the types natively converted. This conversion process between languages is relatively transparent to developers by shifting any XML processing and interaction into the WDDX modules, eliminating developers from having to directly program or manipulate XML themselves, This is not an RMI mechanism. Regards, Albert Boulanger aboulanger(a)vpatch.com

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Hotfix_2000-10-02 - fails with GUF and zope 2.2.2
by Andrews, Martin 05 Oct '00

05 Oct '00

When I have the 2000-10-02 hotfix installed I can no longer authenticate to zope. I fails with the attached message (Error Type: AttributeError, Error Value: editabsolute_url). I am guessing the problem is related to the fact that I am using GUF 1.2.4 (patched to have the getUserById() method). Any ideas? Martin mandrews(a)netgenics.com

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Last-modified header missing -- time-stamps turned off.
by Jean Jordaan 04 Oct '00

04 Oct '00

Hi all Just a note from the blue .. I'm snarfing the ZB using wget -np -m http://www.zope.org/Members/michel/ZB/ and for every document I'm seeing: Last-modified header missing -- time-stamps turned off. What's the significance of this? I assume something to do with the http headers returned by Zope. Does Zope not include last-modified headers since it predominantly serves dynamic pages? Regards, -- Jean Jordaan -- technical writer -- Mosaic Software -- Zope 2.2 on WinNT and W2K

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Re: [Zope] 'websafe' colours
by Curtis Maloney 04 Oct '00

04 Oct '00

On Wed, 04 Oct 2000, Stephan Goeldi wrote: > > > > According to a recent study, there are approximately 13 'web safe' > > > > colours, out of the full 16,777,216. > > > > > > What makes the other 15,777,203 'unsafe'? > > If you mean the 'browsersafe colours' then there are 218. > Yes, my mistake. I did mean 'browser safe'. I was aware of the previous belief of 216 (mostly because of 256 colour modes less 40 system colours), but as I stated, a recent study has "dispelled the myth", claiming (and now I correct myself :) only 22 browser safe colours. http://slashdot.org/articles/00/09/08/1622204.shtml has some more details, and a link to the actual article. > >The only other possible reason I can recall is that some of the 'named' > >colours are not supported by all browsers, or are not interpreted the > > same. > > No, the problem is, that they are not displayed the same. > Not long after posting my message I realised this also. (o8 > -goe- > Have a better one, Curtis Maloney

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