October 2001 - Zope-Dev

core session tracking and zope 2.5 integration
by Joseph Wayne Norton 09 Oct '01

09 Oct '01

Chris - I'm not sure of your plans for integrating core session tracking with zope 2.5. This may be obvious to you but I just realized today how I would really like to use core session tracking. I haven't yet investigated the feasability of an implementation. However, it would be nice to have 3 out-of-the-box choices for acl_users folders: - the current acl_users folder - a new acl_users folder with core session tracking support (ram-based storage) - a new acl_users folder with core session tracking support (possibly mounted zeo client storage) The core session tracking based acl_users folders would hide all of the details of installing and setting up the current core session tracking product. By combining this with something like the cookie crumbler, password-less users authenticated only by session key (user name equal to the session key) could be automatically created and expired when the session expires. The session data could also simply hang off of the authenticated user object and default roles (or no roles at all) could be assigned at the user's creation time. The session based acl_users folder would behave the same as the current acl_users folder for users whose expiration time is NONE or less than zero. In essence, it would be really helpful to make the core session tracking product as easy to use (and install) as the REQUEST object. I need to elaborate more on my thoughts but I thought it would be worthwhile to ask if something like this is already in the works before I spend too much investigating how to implement such a acl_user folder. thanks, - joe n. -- norton(a)alum.mit.edu +81-3-3823-5757 2-10-7 Tabata, Kita-ku, Tokyo 114-0014, Japan 〒114-0014 東京都北区田端２丁目10-7

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Unable to retrieve member data
by Priya Ramkumar 09 Oct '01

09 Oct '01

Hi all, I am using Zope2.3.3 & CMF1.1 with ZEO1.0b3. The CMF site was working fine all through. But suddenly, there is a problem in authenticating users. That is, whenever a method such as portal_membership.getAuthenticatedMember().getMemberId()" or "portal_membership.getAuthenticatedMember().getUserName()" is invoked from a DTML method, I get the following error message. Error Type: MemberDataError Error Value: Can't find user data. Also, "portal_membership.isAnonymousUser()" returns 0. I also checked that portal_membership.getAuthenticatedMember()" returns the member. But I am surprised that I am unable to get the attributes of the member object like name or id. Has anyone faced this sort of problem? Or does anyone know under what circumstances such functions as getMemberId(), getUserName() returns an error? Thanks for any help & suggestions. This is the traceback I get. Traceback (innermost last): File /export/usr/local/Zope3/Zope_software_home/lib/python/ZPublisher/Publish.py, line 223, in publish_module File /export/usr/local/Zope3/Zope_software_home/lib/python/ZPublisher/Publish.py, line 187, in publish File /export/usr/local/Zope3/Zope_software_home/lib/python/Zope/__init__.py, line 221, in zpublisher_exception_hook (Object: Traversable) File /export/usr/local/Zope3/Zope_software_home/lib/python/ZPublisher/Publish.py, line 171, in publish File /export/usr/local/Zope3/Zope_software_home/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: copy_of_news_box) File /export/usr/local/Zope3/Zope_software_home/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: copy_of_news_box) File /export/usr/local/Zope3/Zope_software_home/lib/python/OFS/DTMLMethod.py, line 189, in __call__ (Object: copy_of_news_box) File /export/usr/local/Zope3/Zope_software_home/lib/python/DocumentTemplate/DT_St ring.py, line 540, in __call__ (Object: copy_of_news_box) File /export/usr/local/Zope3/Zope_software_home/lib/python/DocumentTemplate/DT_Le t.py, line 149, in render (Object: member="portal_membership.getAuthenticatedMember()") File /export/usr/local/Zope3/Zope_software_home/lib/python/DocumentTemplate/DT_Le t.py, line 148, in render (Object: name="member.getUserName()") File /export/usr/local/Zope3/Zope_software_home/lib/python/DocumentTemplate/DT_Ut il.py, line 339, in eval (Object: member.getUserName()) (Info: member) File <string>, line 0, in ? File /export/usr/local/Zope3/Zope_software_home/lib/python/DocumentTemplate/DT_Ut il.py, line 144, in careful_getattr File /export/usr/local/Zope3/Zope_software_home/lib/python/OFS/DTMLMethod.py, line 261, in validate (Object: copy_of_news_box) File /export/usr/local/Zope3/Instance_home/Products/CMFCore/MemberDataTool.py, line 337, in __str__ File /export/usr/local/Zope3/Instance_home/Products/CMFCore/MemberDataTool.py, line 287, in getMemberId File /export/usr/local/Zope3/Instance_home/Products/CMFCore/MemberDataTool.py, line 278, in getUser MemberDataError: (see above) Regards, Priya

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PropertyManager bug: long int truncation
by Richard Jones 09 Oct '01

09 Oct '01

Under python 2.1.1, zope 2.4.1, long in properties get truncated by exactly one character each time they are saved. This most likely results from the Good Old Days when long int representations had a trailing 'L', which no longer exists. Richard ps. how's the collector going? Wanna maybe use Roundup? :)

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Adding a role programatically
by Kiran Ambati 08 Oct '01

08 Oct '01

Hi All: I would like to add a role programatically, I was wondering if any one has tried adding a role, I was looking for a python script that would do this. I am adding a role into an Oracle table through a form, so I would like to also add the same role into ZOPE, thus having only one point of entry to both. Thanks much. Kiran.

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ZCatalog searching for missing values
by Bjorn Stabell 08 Oct '01

08 Oct '01

Hi all, We've installed Kavio's CatalogQuery product and are very happy with it. Haven't looked at the ZOQLMethod from iuveno yet, but both look like great steps in the right direction. I have one question: is it possible using a normal catalog query or Kavio's catalog query to check if a value is not set? The representation returned is Missing.Value, but I seem to be unable to say, e.g, 'Description == Missing.Value' etc. How hard is it to add such functionality? Bye, -- Bjorn

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RE: [Zope-dev] ZCatalog searching for missing values
by Bjorn Stabell 08 Oct '01

08 Oct '01

Ahhh... Got it working now. Thanks. :) Not sure I know how to activate ZCatalog searching though, or if it is on all the time; the example only mentions ZCatalog once when it deletes it. What determines if a search is a raw object-database search and when it uses the ZCatalog? Always returning the objects is going to a bit slow, though. Couldn't it just return the Pluggable Brains if you search the ZCatalog; or at least have an option to only return them? Bye, -- Bjorn > -----Original Message----- > From: Stephan Richter [mailto:srichter@cbu.edu] > Sent: Monday, October 08, 2001 23:33 > To: Bjorn Stabell > Cc: Zope-dev(a)zope.org > Subject: RE: [Zope-dev] ZCatalog searching for missing values > > > > >I just tried out ZOQLMethod as well. Couldn't get it to work, but it > >looks like really solid craftsmanship. I like the > user-friendly way of > >selecting base object and the complete syntax. :) Some questions: > > > >1. I couldn't get any query to work. I keep getting > > > > exceptions.TypeError > > argument 2 to map() must be a sequence object > > Solved. See below. > > >Here's an example query that I've tried > > > > SELECT id > > WHERE title == '' > > RECURSIVE; > > You can only select meta types (this is by design; I just > don't want to > deal with brains and all that stuff right now.)!! Did you see > the help? It > has a long example in there as well. > But there is another bug. You have to specify FROM right now. > I will fix > that. Okay, is fixed for the next release. > > So, > > SELECT "DTML Method" > FROM "." > WHERE title == '' > RECURSIVE; > > should work. > > >2. Is the ZCatalog searching implemented? How do I activate it? > > Yes, see the "Rather Lengthy Example". > > >3. Do you have any plans to implement JOIN? > > No, for the reasons given above. You select only objects, not > attributes. > > BUT, patches are always welcomed!!! :-) > > >The exists function would be very cool. > > I will look into this. Hopefully it will be not too hard to implement. > > >Keep up the great work. Hope this helps flush out some features :) > > I hope I will. :-) Yes it does. If you and all the other Zope > people could > write me some arguments to support attribute selection, then > I will look > into it (but it will be not that easy). > > Regards, > Stephan > > -- > Stephan Richter > CBU - Physics and Chemistry Student > Web2k - Web Design/Development & Technical Project Management > >

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RE: [Zope-dev] ZCatalog searching for missing values
by Bjorn Stabell 08 Oct '01

08 Oct '01

Having an exists function would be great. I was trying to do the same using CatalogQuery, but I found no way to check for Missing.Value, which is the repr() of what's in the catalog's metadata field for objects that don't have that attribute/function. I also ran into problems doing more complex or'ing and and'ing, and I assume we'll have better luck with ZOQLMethod for that. I just tried out ZOQLMethod as well. Couldn't get it to work, but it looks like really solid craftsmanship. I like the user-friendly way of selecting base object and the complete syntax. :) Some questions: 1. I couldn't get any query to work. I keep getting exceptions.TypeError argument 2 to map() must be a sequence object Here's an example query that I've tried SELECT id WHERE title == '' RECURSIVE; 2. Is the ZCatalog searching implemented? How do I activate it? 3. Do you have any plans to implement JOIN? The exists function would be very cool. Keep up the great work. Hope this helps flush out some features :) Bye, -- Bjorn Stephan wrote: [...] > I actually need to look at Casey's code and see what I can reuse. The > efficiency of my version is not that great yet, but much more > flexible. So I want to take Casey's code and optimize mine a little. > > BTW, I just added a mailing list and a poll for ZOQL. Please go to > http://demo.iuveno-net.de/iuveno/Products/ZOQLMethod and vote > in the poll, so I can get an estimate of the general interest. > > >I have one question: is it possible using a normal catalog query or > >Kavio's catalog query to check if a value is not set? The > >representation returned is Missing.Value, but I seem to be unable to > >say, e.g, 'Description == Missing.Value' etc. How hard is it to add > >such functionality? > > You mean, whether the system checks, if a property exists at > all or is set to None? I think both would be no problem. > > 1. Property exists or not: > > I could support a function, like: exists(Property) > Example: > > SELECT * > FROM Test > WHERE exists(Property); > > 2. Property is set to None: > > Simply use equal: Property == None > Note: That might work already? I have to check... > Example: > > SELECT * > FROM Test > WHERE Property == None; > > Regards, > Stephan > > -- > Stephan Richter > CBU - Physics and Chemistry Student > Web2k - Web Design/Development & Technical Project Management > > > _______________________________________________ > Zope-Dev maillist - Zope-Dev(a)zope.org > http://lists.zope.org/mailman/listinfo/zope-dev > ** No cross posts or HTML encoding! ** > (Related lists - > http://lists.zope.org/mailman/listinfo/zope-announce > http://lists.zope.org/mailman/listinfo/zope ) >

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Re: [Zope-dev] compiling Zope 2.4.1 on Mac OS 10.1
by Itai Tavor 08 Oct '01

08 Oct '01

Has anyone managed to do this procedure with Python 2.0? The -flat_namespace flag does not help and I'm still getting twolevel_namespace errors. I'm running Zope 2.3.2 and I'd like to avoid the startup warnings, as well as any possible incompatibilities with Python 2.1/2.2. Itai Jens Vagelpohl wrote: >i think i found a working solution. since my knowledge of compilers and >linkers isn't the greatest i'll just explain what i did. > >trying to compile python2.1.1 on OS X 10.1 failed for me displaying the >very same error. searching through apple's discussion i found the >following link: > >http://fink.sourceforge.net/doc/porting/shared.php > >it explains that some linker/compiler default options have changed. in >order to get python compiled and running i edited the toplevel Makefile >after running ./configure and edited the lines starting with LDSHARED >and BLDSHARED, this is what they look like now in my setup: > >LDSHARED= $(CC) $(LDFLAGS) -bundle -flat_namespace -undefined >suppress >BLDSHARED= $(CC) $(LDFLAGS) -bundle -flat_namespace -undefined >suppress > >notice the "-flat_namespace" switch, this gets rid of the new default >"twolevel_namespace" that complains about "undefined warning". > >running "make" was now successful and i was able to compile and run Zope >2.4.1. you will probably have to recompile your python to set that >switch under 10.1. > >i only did some light testing, no guarantees and before using this in >production you might want to read up on those compiler/linker options... > >jens -- -- Itai Tavor -- "Je sautille, donc je suis." -- itai(a)optusnet.com.au -- - Kermit the Frog -- -- -- -- "If you haven't got your health, you haven't got anything" --

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RE: [Zope-dev] ZTables and/or Catalog plugable brains?
by Jay, Dylan 07 Oct '01

07 Oct '01

> -----Original Message----- > From: Casey Duncan [mailto:c.duncan@nlada.org] > Sent: Friday, 5 October 2001 10:55 PM > To: Jay, Dylan; 'zope-dev(a)zope.org' > Subject: Re: [Zope-dev] ZTables and/or Catalog plugable brains? > > > On Thursday 04 October 2001 07:34 pm, Jay, Dylan allegedly wrote: > > > > I tried using ZClasses but it seems to run slow and take up > space. Instead > > I'm using Catalog (without ZCatalog) to contain the data. > I'm presuming > > this will be quite efficient (comments welcome). > > Yup that should be pretty efficient. Plus you can index and > query the thing > fairly easily. > > > > Now to my question, How do Catalog plugable brains work? > I've looked but > > can't see what the brain class has to look like to work. My > first attempts > > don't seem to work. The classes are created but don't > contain the data. Is > > the record data passed into the constructor? > > I'm not an expert on brains per se, but my understanding is > that they allow > you to wrap functionality from a particular class around data > stored in a > table (such as a Catalog or an external database) without > making each record > an instance of the class. > > This is how, when the Catalog returns data, you get the > getURL and getObject > methods for each record (among others). TinyTable and Z SQL > Methods also > support this functionality, and it is exposed in the > management interface. > > This would allow you to store the actual data as regular > metadata elements in > the Catalog, and get objects out when you query it. It would > avoid storing > the data twice, once in the objects and again in the metadata > and all of the > disadvantages this causes in terms of storage and synchronization. But what is the API? I understand that for SQLMethods you just have a class that assumes the existance of attributes that have the same name as you result fields. I tried doing this with the Catalog code but it seem to doesn't work. Am I doing it right or the the Catalog brains work differently?

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RFC: Date property requiers valid date (no more)
by Johan Carlsson 07 Oct '01

07 Oct '01

Hi, We currently want to use date-properties in the regular property sheet. The current date-property doesn't accept an empty value. We want to be able to submit an empty string and set a NullDate value indicating. Also a NullDate value should return an empty string when the "manage_propertiesForm" is rendered, e.g. showing an empty field. We have currently chosen a empty string "", to represent the NullDate value. (We haven't found any NullDate representation in DateTime and have concluded that it doesn't exist?) Choosing None as the NullDate value would have been preferred but it generates issues with the rendering of "manage_propertiesForm". Question: Is there anything better then an empty string for the NullDate value? Best Regards, Johan Carlsson www.torped.se [Here's our hot-patch] from ZPublisher import Converters def fixedfield2date(v): print "Fixed field2date conversion", fixedfield2date, v from DateTime import DateTime if hasattr(v,'read'): v=v.read() else: v=str(v) if v=='': return v return DateTime(v) Converters.field2date = fixedfield2date Converters.type_converters['date'] = fixedfield2date print "ZPublisher.Converters.field2date patched."

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