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Competing writes and reindexing objects
by Jason Spisak 12 Oct '00

12 Oct '00

Zopists, I am trying to eliminate the competing writes that are plaguing my app at the moment. One way I know of is to make sure that people aren't creating/modifying objects in the same folder at the same time. This is becuase the parent object gets modified too. Does anyone have a "object creation/folder distribution" code that works for them that they would be willing to share? Lastly, even if I distribute my objects, doesn't reindexing any Zope object inthe Catalog at the same time create a conlict? I'd love to know if I'm fighting a losing battle here. All my best, Jason Spisak 444(a)hiretechs.com

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Using UserDB objects with DreamWeaver
by Tony McDonald 12 Oct '00

12 Oct '00

Hi all, Has anyone managed to get acl_users folders that use UserDB (and I presume any other kind of cookie-based authentication) to work alongside DreamWeaver. Whenever I try to get into a UserDB locked folder I get FTP authentication errors. Any ideas? tone ------ Dr Tony McDonald, FMCC, Networked Learning Environments Project http://nle.ncl.ac.uk/ The Medical School, Newcastle University Tel: +44 191 222 5116 A Zope list for UK HE/FE http://www.fmcc.org.uk/mailman/listinfo/zope

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Re: [Zope] How to see if two objects are the same (minor fix)
by Dieter Maurer 12 Oct '00

12 Oct '00

Ron Bickers writes: > I want to see if an object is the one aqcuired from the root, but I'm > hitting walls. > > <dtml-var "PARENTS[-1].myObject"> > <dtml-var "myObject"> > <dtml-var "PARENTS[-1].myObject is myObject"> > > This returns the following when in the root folder context: > > <TinyTable instance at 8684ad8> > <TinyTable instance at 8684ad8> > 0 What you see here, is Zope's (more precisely ExtensionClass's) acquisition magic: when you access "object.attribute", you (usually) will not get the object corresponding to "attribute" but a new object: "attribute.__of__(object)" i.e. the attribute object in the context of "object". When you look up an attribute of this object, it will first in the object itself and when it does not success there, it will look in the context. That is what you like with acquisition. The downside: When you access the "same" object via different contexts, you will in fact get different objects (as the contexts are different). "is" will return false, as it should be. But, even, if you use "==", you will get "false". There have been some discussion in the list, whether this is the best behaviour. What can you do? You can use the "aq_base" attribute to strip away any context and get to the base object. At least in Zope 2.2.1, "aq_base" was not exposed to DTML. Thus, you would need an external method, say "getBaseObject", to get at the base: def getBaseObject(object): return getattr(object,'aq_base',object) With this function, you can compare the base objects: <dtml-var "getBaseObject(myvar) is getBaseObject(PARENT[-1].myvar)"> Be careful, however: Even, if such a test returns true for two objects, the objects may nevertheless have different behaviour (as the contexts are different). Dieter

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[Job] Zope Job in France
by Olivier Deckmyn 12 Oct '00

12 Oct '00

Jeune Start-up dans le monde de l'internet recherche développeurs/chefs de projet Internet / Zope. Diplômé BAC+2/5 (ingénieur ou universitaire), vous avez une première expérience (éventuellement un stage significatif) en développement d'applications avec Zope. Connaissant bien HTML et HTTP, vous maîtrisez parfaitement au moins un langage de programmation objet (Python, Delphi, Java, C++, ...). Vous avez une connaissance de UML et de l'objet en général. Une connaissance de XML et LDAP serait un GROS plus. Vous êtes rigoureux et organisé. De plus, vous avez une bonne connaissance des SGBDR et êtes capable de lire et rédiger des documents en anglais. Votre mission : Vous participez à la conception, au développement et à la gestion du site. Selon votre potentiel, vous évoluerez au sein de la société vers de plus amples responsabilités notamment en prenant une part de plus en plus importante dans le déroulement des projets. Expérience : N'hésitez pas à joindre à votre candidature tout document pouvant démontrer vos compétences (ex : URLs de vos réalisations) Profil : Vous êtes rigoureux et organisé, dynamique et passionné et prêt à travailler dans une équipe jeune et très ambitieuse. Ce poste, basé à Paris-La Défense, est à pourvoir immédiatement dans le cadre d'un CDI. Rémunération proposée : 210KF à 290KF selon profil et expérience. Contact : Merci d'adresser CV et une lettre de motivation à : olivier.deckmyn(a)experts-md.com Olivier Deckmyn, CTO eXperts-MD.com

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Re: [Zope] Easiest way to turn X-Forwarded-For to Remote-IP?
by Dieter Maurer 12 Oct '00

12 Oct '00

Marcin Kasperski writes: > I use Zope via Apache proxy, what causes some trouble (all remote IPs > for Zope are equal to 127.0.0.1). > > As I finally installed mod_proxy_add_forward, I get original address in > X-Forwarded-For header (REQUEST['HTTP_X_FORWARDED_FOR']). > > The question is: can I do something easy to automatically perform > if(remote_ip = 127.0.0.1 and X-Forwarded-For exists) then > set remote_ip = whatever is in X-Forwarded-For > logic? In particular, I would like changed IP to be used by Zope access > control and Zope log. We have had similar problems. Friendly people from NIP made a HowTo patch Apache to let the information through. If you do not want to patch Apache, you can use a SiteAccess (--> zope.org) AccessRule in your top (logical) folder to modify your REQUEST object as you like. Dieter

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SybaseDA and ASA
by Manuel Amador (Rudd-O) 12 Oct '00

12 Oct '00

Hey everyone, first, let me thank you for all the help you've provided. Every reply was fast, efficient and right to the point. Second: I've installed zope 2.2.2, and compiled sy_occ.so for SybaseDA against sybase-common-cantrememberversion.rpm from Sybase. (I assume it's the latest one). Loading python and importing sy_occ works perfectly. BUT, I can't create a SybaseDA SQL connection object . Specifically, trying to create it sez connection failed. I've tried EVERY POSSIBLE parameter combination on the creation form. None worked. By the way, I'm using Adaptive Server Anywhere for linux, 6.0.3. It is NOT ASE. It is ASA. Does sy_occ work with ASA, or only with ASE? Any experiences? -- Manuel Amador (Rudd-O)

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int and string comparisons
by Manuel Amador (Rudd-O) 12 Oct '00

12 Oct '00

This is the snippet <dtml-in "_.range(1,32,1)"> <option value="&dtml-sequence-item;" <dtml-let item=sequence-item> <dtml-if begin_day> <dtml-if expr="item == REQUEST.begin_day"> selected </dtml-if> <dtml-comment>CONVERTIR A INT</dtml-comment> </dtml-if> </dtml-let> >&dtml-sequence-item;</option> </dtml-in> The comparison fails because item is an int and REQUEST.begin_day is a string (i guess). How can I coerce item into a string, or REQUEST.begin_day into an int? I tried python's builtin int() function around REQUEST.begin_day. Won't work. Any suggestions? -- Manuel Amador (Rudd-O)

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How to see if two objects are the same (minor fix)
by Ron Bickers 12 Oct '00

12 Oct '00

**** From my previous post, it looked like the parent was changing. I had the first two lines swapped. Fixed below. ---- I want to see if an object is the one aqcuired from the root, but I'm hitting walls. <dtml-var "PARENTS[-1].myObject"> <dtml-var "myObject"> <dtml-var "PARENTS[-1].myObject is myObject"> This returns the following when in the root folder context: <TinyTable instance at 8684ad8> <TinyTable instance at 8684ad8> 0 It returns the following in a folder where there is another myObject: <TinyTable instance at 8684ad8> <TinyTable instance at 86709f8> 0 What am I missing in the comparison? Thanks! _______________________ Ron Bickers Logic Etc, Inc. rbickers(a)logicetc.com

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Namespace problems...
by Lars Heber 12 Oct '00

12 Oct '00

Hi there, I've still got to build a bigger website. So I stored my headers and footers and many other things in root/pub. All the other documents are stored in root/Intra and below. I've got my standard_html_header, with which I can display user-defined titles which may also contain values of global properties. The user-defined title is being built in the document before the header is called, e. g. something like: <dtml-with pub> <dtml-let titel="_.string.join(['This is the website of ', enterpriseName])"> <dtml-var standard_html_header> </dtml-let> In the standard_html_header method I'm checking whether there is a titel attribute or not. This works fine. But for general use I want to keep the possibility of displaying the title_or_id of the document when I don't introduce a user-defined title. This would be no problem if s_h_h wasn't situated in root/pub, so I have to call it within the <dtml-with pub>. But doing this, pub is on the top of my namespace, so that calling title_or_id returns the title_or_id of the container of s_h_h, i. e. pub! How can I nevertheless access within the s_h_h to the title_or_id of my original document? Thanks. Lars

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Re: [Zope] Stupid questions boundary="------------863E93B9EF206ECA13FE9F39"
by Dieter Maurer 12 Oct '00

12 Oct '00

Manuel Amador (Rudd-O) writes: > Am i supposed to get "XML methods" and "Python methods" in the add > product drop down? Obviously, you looked at the forthcoming Zope book. It describes things as they should be when the book is finished and not the current state. And it does it with a didactical and marketing perspective. There are alpha/beta versions of PythonMethod and XMLDocument around. They are not yet bundled with the standard Zope release. You must download them separately. XSLT- and Perl-Methods are in an even earlier develogment state (I think). You should not yet expect, that all examples in the book already work as described. > PD: the subject says it all. Please don't flame me. I hope, you do not have the impression that this mailing list is very flame friendly. However, please do not post MIME messages to the list. Dieter

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