January 2001 - Zope-Dev

Error Message
by Andre Schubert 26 Jan '01

26 Jan '01

Hi all The last time i get some times the following error: 2001-01-26T08:45:55 ERROR(200) ZODB Couldn't load state for '\000\000\000\000\000\000\260\256' Traceback (innermost last): File /usr/share/zope_2.2/Zope-2.2.0-src/lib/python/ZODB/Connection.py, line 442, in setstate AttributeError: 'None' object has no attribute 'load' My questions are what does that mean and how can a find out from which Object the error comes from ? Could anyone help?? as

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Re: [Zope-dev] Passing arguments to DTML Methods
by Dieter Maurer 25 Jan '01

25 Jan '01

Espen Sorbye Frederiksen writes: > How do you pass on variables to a DTML Method. > If I would use a python method I would use <dtml-call "pythonmethod(var1, > var2)">. This does not work with DTML Methods. First of all why? Secondly > how is it possible to get around the problem? DTML Methods have 2 positional and arbitrary many keyword parameters. The positional arguments are "client" and "REQUEST". "client" is an object (or tuple of objects or None). All attributes of "client" are put into the DTML namespace. "REQUEST" is a mapping object (or None), all keys of this object are put into the DTML namespace. All keyword arguments are put into the DTML namespace. Thus, you can use: <dtml-XXX "method(_.None,_,param1=value1, param2=value2, ...)"> In this use: "_.None" is the client and "_" the mapping object. You must pass the "_" as otherwise, you break the DTML namespace chain. An alternative, probably easier: <dtml-let param1="value1" param2="value2" ....> <dtml-XXX method> </dtml-let> i.e. you bring the arguments into the DTML namespace (with the "let") and then let DTML automatically pass the namespace to your method. Dieter

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Passing arguments to DTML Methods
by Espen Sorbye Frederiksen 25 Jan '01

25 Jan '01

Sorry this, possibly, very trivial question: How do you pass on variables to a DTML Method. If I would use a python method I would use <dtml-call "pythonmethod(var1, var2)">. This does not work with DTML Methods. First of all why? Secondly how is it possible to get around the problem? Hope someone kindly could answer my question, Espen

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Local roles and security of ZClass instances in Specialists
by Itai Tavor 25 Jan '01

25 Jan '01

Hi, I'm trying to work out a security strategy for data stored in Specialists, where specific users need access to specific data instances. For example: A Customer object is linked to a Person and Address objects. The customer needs permission to edit the her - and only her - Address object. Using the Owner local role won't work, because customers can be registered by site managers and customer support people, in which case Owner won't be the customer. I can solve this by giving the customer a local role when creating her Address object: Customers.addCustomer(REQUEST): ni = container.addItem(some_id) container.Addresses.addAddressFor(ni.id, REQUEST) Addresses.addAddressFor(for_id, REQUEST): ni = container.addItem(some_id) ni.manage_addLocalRole(for_id, 'EditMyDetails') But this can be a lot of work - If an Address object can also be created for a CreditCard object, addCreditCard will have to both set its own local role, and pass the customer id on to Address... But the main problem is that I'm not sure if it will work at all - can local roles be set for DataSkins that aren't stored in the ZODB? From what I can see ZPatterns doesn't support this, so I'll have to do it myself. __ac_local_roles__ can't be accessed in a SkinScript - so will I have to override has_local_roles, get_local_roles and get_local_roles_for_userid and call them from the SkinScript? This is getting hairy... Without local roles, all I can think of is explicitly checking that the logged in user is the right customer in all the methods that display and edit the object, which is very ugly. Plus it would require Address to know a customer_id even when it actually belongs to a CreditCard, not a Customer... there goes Demeter. Or I can add a findUserID to Address, CreditCard and Customer, all of which pass the request upwards until one is reached that actually knows the customer. Still ugly. TIA for Any comments/suggestions. Itai -- Itai Tavor "Je sautille, donc je suis." C3Works itai(a)c3works.com - Kermit the Frog "If you haven't got your health, you haven't got anything"

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Mapping multiple IP addresses/domains to one Zope
by Aaron Gillette 25 Jan '01

25 Jan '01

My company has many sites which share some content. Each site uses a different IP address. I would like to bring all of these sites into one instance of Zope on an NT machine. I am looking at the possibility of either 1) running Zope behind IIS, or 2) running Zserver exclusively. Personally, I'd rather take the time in advance to learn how to do the whole thing in Zope, as I envision switching to a Linux server in the near future, and I believe that this would ease the migration. My question is this: How do I map different IP addresses/domains to different Zope folders? I am pretty new to Python (but learning fast!), so any snippets of sample code would be much obliged. Thanks in advance, Aaron Gillette

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ANNOUNCE: Zope 2.3.0 beta 3 released
by Brian Lloyd 24 Jan '01

24 Jan '01

Hi all, Zope 2.3.0 beta 3 is now available. You can download it from Zope.org: http://www.zope.org/Products/Zope/2.3.0b3/ This beta contains fixes for various issues reported to date in the beta cycle, and some older Collector bugs. Barring any major unforseen problems, this will be the last 2.3 beta release. For more information on what is new in this release, see the CHANGES.txt and HISTORY.txt files for the release: - http://www.zope.org/Products/Zope/2.3.0b3/CHANGES.txt - http://www.zope.org/Products/Zope/2.3.0b3/HISTORY.txt Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

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"Find" broken in 2.2.2?
by tsarna＠endicor.com 24 Jan '01

24 Jan '01

Is there something wrong with the Find mechanism in 2.2.2? "containing" searches never find anything. I've looked at the changelogs for post-2.2.2 versions and didn't see anything about this being fixed, so either it was fixed but not documented, it's still broken, or it's something peculiar to my setup. This is a real problem for managing complex applications... Oh, for the good old days of grep.

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Re: [Zope-dev] Old to new registerClass
by Andy McKay 24 Jan '01

24 Jan '01

I nuked it and everything is just fine, its defined in misc. Anyway works fine, will post a "package" shortly after some testing. -- Andy McKay. ----- Original Message ----- From: "Johan Carlsson" <johanc(a)torped.se> To: "Andy McKay" <andym(a)ActiveState.com> Sent: Wednesday, January 24, 2001 9:39 AM Subject: Re: [Zope-dev] Old to new registerClass > > Lang is used in this line: > > > > document.write("<SCR"+"IPT src=\"misc_/IEMethod/lang_"+lang+"\" > > type=\"text/javascript\"></SCR"+"IPT>"); > > I think that: > The "lang" Javascript variable is either set to "sv" or "en" so the script include > file should look for either "lang_sv" or "lang_en". > The dictionary lang_ defined in __init__ isn't, as far as I can see, used anywhere. > > So you don't need to worry about it much. > > > Kind of a bizarre line, but it looks like its setting the script source. > > Thanks, just doing a quick ZWiki-IEMethod merge so that you can edit a ZWiki > > standard style or using IEMethod. > > Great, one less thing for me to do :-) > > Johan >

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Old to new registerClass
by Andy McKay 24 Jan '01

24 Jan '01

Im hacking around IEMethod and it uses an old style of class initialisation in the __init__.py along the lines of: misc_ = { 'imagef':'foo','imageg':'goo', } lang_= { 'en':'lang_en','sv':'lang_sv', } I want to put this into a modern style product initialisation (context.registerClass). Looking at this functions API it didn't become readily apparent how I can pass in these values. This would be nice to do so I don't have any hacking of dtml to do. Has anyone done this / got any advice? Thanks. -- Andy McKay.

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"Problem" using External Method
by Espen Sorbye Frederiksen 24 Jan '01

24 Jan '01

The module below works using the python compiler class Testclass: def setdata(self,val1,val2,val3): self.data = [val1,val2,val3] def updatedata(self, index): self.data[index] = self.data[index]+1 def display(self): print self.data x = Testclass() def createdata(): import __main__ __main__.x.setdata(10, 20, 30) __main__.x.updateLog(2) __main__.x.display() >>>createdata() >>>[10,20,31] However if I try to add it as an External Method( id= createdata) it doesn't seem to work. I've tried to call it using <dtml-var/call createdata> without success. Any suggestions what I do wrong. I am grateful for all comments, Espen

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