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Conflict Errors
by Chris Withers 03 Jan '01

03 Jan '01

Hi, Whenever there's a lot of writes and the occasional read going on, we get the following error: 2000-11-19T16:03:44 INFO(0) Z2 CONFLICT Competing writes at, /aFolder/anObject Traceback (innermost last): File D:\Program Files\Zope\lib\python\ZPublisher\Publish.py, line 175, in publ ish File D:\Program Files\Zope\lib\python\Zope\__init__.py, line 235, in commit File D:\Program Files\Zope\lib\python\ZODB\Transaction.py, line 251, in commit File D:\Program Files\Zope\lib\python\ZODB\Connection.py, line 267, in commit ConflictError: y Can anyone shed any light on: -what this means -how bad it is -how we can make it stop happening cheers, Chris

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ZPatterns Product distribution not showing up as a product?
by jimbo 03 Jan '01

03 Jan '01

Hi, If I try to distribute it and leave it set for "Allow redistribution". Its not showing up in the Zope products directory tree after I untar the 3 files into the file system products directory and restarting Zope. I have a Dataskin based ZClass, 2 Specialist, the default constructor forms. I'm using Zope 2.2.2 on win98 ZPatterns 4.3b2. Is this expected behaviour for a ttw product? It works if I export/import it. -Jimbo

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Re: [Zope-dev] Conflict Errors
by Dieter Maurer 03 Jan '01

03 Jan '01

Chris Withers writes: > However, if anyone does know what constitutes a 'seperate object' in > ZODB terms, it be really useful to know. > I'm guessing a class which inherits from Persistent? Dictionaries don't, > 'cos they're python builtins, which I'm pretty certain was the problem > in my case... This has recently been answered in the list. Here a short summary: a persistent object with all its attributes. If the attribute is itself a persistent object, then the "separate" object contains only a reference to it. Otherwise, the complete attribute value (until persistent objects are hit) is part of the object's value. Dieter

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Re: [Zope-dev] "dynamic permissions" in zope
by Dieter Maurer 03 Jan '01

03 Jan '01

Heinz-Josef Claes writes: > .... dynamic permissions .... It is not Zope's normal behaviour. Of cause, you could plug in a new UserFolder that implements the features you require (someone else recommended "LoginManager"). On the other hand, Zope is flexible enough to let you approximate the desired behaviour - at the expense of a bit extra work: You create a folder like ZClass for your documents. Each document goes into its own ZInstance. You ensure, that the document is not accessible directly. You give your ZClass a method "index_html". It performs your application specific security checking. If the check succeeds, it renders the document. You may need to set a proxy role for your "index_html" be able to render the document. This approach is only an approximation. It looses the fine grained permission checking during the rendering of your document. Dieter

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RE: [Zope-dev] ANNOUNCE: PartitionedFileStorage
by Magnus Heino (Rivermen) 03 Jan '01

03 Jan '01

> But like I told ChrisW, I think BerkeleyStorage will fill the > need that > PartitionedFileStorage was only partitially addressing. How is the new BerkeleyStorage product coming along? /Magnus ########################################### This message has been scanned by F-Secure Anti-Virus for Microsoft Exchange. For more information, connect to http://www.F-Secure.com/

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Re: [Zope-PTK] A subclass from PortalMember of Membership Product and ObjectManager won't list contained objects ObjectManager won't list contained objects
by Tres Seaver 03 Jan '01

03 Jan '01

Dirksen wrote: > My site is installed with the Membership system. I want to > store some photos in each member. So I create a new member > ZClass, subclassing PortalMember and ObjectManager, and set the > 'manage_main' as the main view. Under the instance of this new > member ZClass, I can add images, but I can't find them! > 'objectItems' always return None. Yet the image file is there. > I can edit their properties as in > '/test/acl_users/jay/photo1/manage_main', but > '/test/acl_users/jay/manage_main' just won't show a thing! I'm guessing you have installed the latest tarball of the PTK, and not the CVS version; that tarball shipped with a bug in PortalFolder, which prevented classes which had not registered as "portal content" from showing up in its objectItems()/objectValues/objectIds() lists. Please try upgrading to the latest CVS and see if the problem persists (http://www.zope.org/Products/PTK/ has directions for getting the CVS version). Alternately, here is the patch for PTKBase/PortalFolder.py: diff -u -r1.25 -r1.27 --- PortalFolder.py 2000/11/08 22:48:38 1.25 +++ PortalFolder.py 2000/11/21 21:36:17 1.27 @@ -110,9 +110,22 @@ ) def all_meta_types( self ): - return ( self.content_meta_types - + PortalFolder.inheritedAttribute( 'meta_types' ) - ) + + names = {} + types = [] + + for cmt in self.content_meta_types: + names[ cmt[ 'name' ] ] = 1 + types.append( cmt ) + + superTypes = PortalFolder.inheritedAttribute( 'all_meta_types' )( self ) + + for smt in superTypes: + if not names.has_key( smt[ 'name' ] ): + names[ smt[ 'name' ] ] = 1 + types.append( smt ) + + return tuple( types ) def manage_addPortalFolder(self, id, title='', REQUEST=None): @@ -130,11 +143,13 @@ listActions__roles__ = () def listActions( self, info ): - return [ { 'name' : 'View' + return ( { 'name' : 'View' , 'url' : info.folder_url , 'permissions' : [] , 'category' : 'folder' - } ] + } + , + ) _morphSpec__roles__ = () def _morphSpec( self, spec ): Tres. -- =============================================================== Tres Seaver tseaver(a)digicool.com Digital Creations "Zope Dealers" http://www.zope.org

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Re: [Zope-dev] "dynamic permissions" in zope
by Tres Seaver 03 Jan '01

03 Jan '01

Steve Alexander <steve(a)cat-box.net> wrote: > Steve Alexander wrote: > > > > > I believe the latest LoginManager allows you to specify what roles a > > user has, and compute these each request, based on the details of the > > request. > > > > This is probably more useful than having dynamically computed > > permissions; While I can see how a user's roles will vary according to > > where they are, what they are doing and when they are doing it, I cannot > > see why permissions need to change in that way. > > > > However, you mention that you are new to Zope. ZPatterns can be > > difficult to understand and get into. Other than the creators of > > ZPatterns, I haven't heard of anyone using this computed permissions > > system. > > What I forgot to mention: LoginManager is a Zope product that is built > using ZPatterns, another Zope product. > > When you are doing advanced things with LoginManager, you need to know > how ZPatterns works. > > There are a couple of HOWTO documents on using LoginManager. It will be > only a small change to alter the "userRoles" method that returns the > roles a user should have to calculate these roles based on other criteria. > > See these documents for information about how to set up LoginManager. > > http://www.zope.org/Members/dlpierson/sqlLogin > http://www.zope.org/Members/jok/SQL_based_LoginManager The workflow-as-finite-state-machine implementation I am working on for the PTK has similar requirements: the permission associated with a particular method (e.g., 'edit'), depends on the workflow status of the object (e.g., you need more privileges to edit the object once it has been "published"). My temporary workaround is to have each method assert the appropriate permission, as part of creating its audit trail entry. I plan to arrange for the permission-role mapping computation to be handled by the workflow tool, as well. Tres. -- =============================================================== Tres Seaver tseaver(a)digicool.com Digital Creations "Zope Dealers" http://www.zope.org

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ANN: CoreSessionTracking Release 0.4
by Chris McDonough 03 Jan '01

03 Jan '01

Hello, A new development release of the "Core Session Tracking" product (0.4) is available at http://www.zope.org/Members/mcdonc/Products/CoreSessionTracking This release makes substantial interface and feature changes including using an internal mounted storage to provide an "internal" session data container to each session data manager, autoexpiring session data objects, as well as vastly improved documentation. Please check it out! Thanks, Chris

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uncataloging objects
by Robert Prosenc 02 Jan '01

02 Jan '01

hi there. i have certain problems with the catalog class. i have something over 9000 objects (all of the same type) cataloged, and it does not only take REAL long to reindex them (but hey, i could live with that), sometimes it also makes the python-process sort of 'hang up' - it merly crushes the whole zope process...... the even bigger problem is that it makes trouble when uncataloging objects....that seems to fail completely: here's some code from the class-definition, where i try to uncatalog the object: def killMe(self): "deletes the record. in fact the record has to be uncataloged first." try: self.Catalog.uncatalog_object('/'+self.absolute_url(1)) except: return "couldn't uncatalog the record." try: self.records.manage_delObjects(ids=self.getId()) # 'records' is a folder, in which the objects are stored except: return "couldn't delete the record." return Globals.MessageDialog( titel='Record deleted', message='Record deleted successfully.', ) so i let my objects kill themselves;) what really confuses me is the fact that while performing that function, no exeption is raised. the uncataloging-call is inside a try/except, but it seems to be performed regulary. but: it isn't! the object, while already deleted, remains still cataloged, which leads to some unpleasant error-pages (key-error) when contained inside the result-set of a search. i have a zope 2.2.2 under linux installed, with hotfixes 2000-10-02, 2000-10-11, 2000-12-08, 2000-12-15a and 2000-12-18, zcatalog 2.2.0 and some selfwritten stuff.... does anybody have an idea what goes wrong here? regards, rob. ------------------------------------------------------------ Robert Prosenc web: http://www.matrixware.at/ mail: r.prosenc(a)matrixware.at Matrixware phone: +43( 1) 713 43 06 - 2 postal: Geusaugasse 39 (Ecke Kundmanngasse) A-1030 Vienna, AUSTRIA ------------------------------------------------------------ while !asleep() sheep++ ------------------------------------------------------------

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Re: [Zope-dev] What's 'section' in blocks[0] in block dtml tag?
by Brett Carter 02 Jan '01

02 Jan '01

Lee, I've been diddling around with the same stuff. It took me a lot of introspection with printing of errors via MrCreosote/Spew. To answer your question, 'section' is an object which contains an attribute 'blocks'. If you want to render the dtml in there, you can run the 'render_blocks' method in '<zope-instance>/lib/Python/pDocumentTemplate.py' You pass it the section.blocks object and a mapping dictionary which is the current namespace stack that gets passed in as the only argument to the 'render' method in you tag definition. If you just want the raw text, check you the render_blocks method, so you can see how they take apart the 'section.blocks' object. As to the object hiarchy of everything, your guess is as good as mine as to why there's a list of tuples of blocks wrapped in a section object, wrapped in another blocks object, I have know idea. Perhaps the designer of the document templates could answer... -Brett >>>>> "LEE" == LEE Kwan Soo <kslee(a)plaza1.snu.ac.kr> writes: LEE> Hi. I'm playing/struggling to make a custom block dtml tag. LEE> Let me call it, dtml-quote tag. LEE> dtml-quote tag is similar to dtml-comment tag except it will emit LEE> html_quoted, not rendered version of what lies LEE> between <dtml-quote> ... </dtml-quote>. LEE> (I feel it will be usefull when I show & write some dtml examples on my LEE> korean zope site). LEE> After seeing around some python sources, LEE> I finally got that tname is the name of the tag, args is args, and section LEE> is something, in the following code. LEE> def __init__(self, blocks): LEE> tname, args, section = blocks[0] LEE> and section seems to have 6 attributes/methods: LEE> '__name__', '_v_blocks', '_v_cooked', '_vars', 'blocks', 'globals', 'raw' LEE> But that mistic raw is null string, '' and blocks is no help for me. LEE> How can I retrieve the raw source string enclosed in a block tag pair? LEE> LEE Kwan Soo. LEE> ps. My English is evem more cryptic this morning. Sorry I've sat up alnight play LEE> Kingdom Under Fire. LEE> _______________________________________________ LEE> Zope-Dev maillist - Zope-Dev(a)zope.org LEE> http://lists.zope.org/mailman/listinfo/zope-dev LEE> ** No cross posts or HTML encoding! ** LEE> (Related lists - LEE> http://lists.zope.org/mailman/listinfo/zope-announce LEE> http://lists.zope.org/mailman/listinfo/zope )

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