July 2000 - Zope-Dev

Re: [Zope-dev] manage_clone? (amongst others!)
by Chris Withers 11 Jul '00

11 Jul '00

Shane Hathaway wrote: > Chris Withers wrote: > > I'm still not clear on this. Why would I need access to the product > > factory when where.manage_addFolder(id,title) works just fine? > > I thought manage_addFolder was the product factoy method? > > manage_addFolder() is to be considered a shortcut, actually. The full > equivalent would be manage_addProduct['OFSP'].manage_addFolder(). If > you look at Products/OFSP/__init__.py, you'll see there's the class > registration for the "Folder" type. In the registration call you'll > see it uses the argument name "legacy", which suggests that the > manage_addFolder shortcut may be deprecated. Okay, that makes sense :-) cheers, Chris

1 0

manage_clone? (amongst others!)
by Chris Withers 11 Jul '00

11 Jul '00

I was going to title this 'I should give up using Zope' but I thought I'd give it one last go... Yesterday's 6hrs failing to do a tree-walk-and-copy in DTML failed, so I thought I'd try in an external method today... ..well, that proved to be just as stupid. Okay, firstup, has anything happened on this issue: http://zope.nipltd.com/public/lists/dev-archive.nsf/ByKey/37C533B80F56E22A Basically, it seems like doing anything with ZClasses in python (an external method in my case) is likely to lead to suicide on your part. How shoudl I be instantiating one? Secondly, AFAIU, the following should copy o and put it in the folder object 'where' with an id of 'new_id': where.manage_clone(o,'new_id') It does, for DTML Methods, but for anything else I get: Error Type: AttributeError Error Value: 'None' object has no attribute 'importFile' (the traceback is in a PS ;-) Why? How should I be doing this?! Lastly, in the following: where.manage_addProduct['OFSP'].manage_addFolder(id,title) What does the manage_addProduct['OFSP'] actually do? In what way does the above differ from: where.manage_addFolder(id,title) ...which works just fine for me... Hope _someone_ can help, Chris PS: Traceback (innermost last): File /usr/local/zope/2-1-6/lib/python/ZPublisher/Publish.py, line 214, in publish_module File /usr/local/zope/2-1-6/lib/python/ZPublisher/Publish.py, line 179, in publish File /usr/local/zope/2-1-6/lib/python/Zope/__init__.py, line 202, in zpublisher_exception_hook (Object: ElementWithAttributes) File /usr/local/zope/2-1-6/lib/python/ZPublisher/Publish.py, line 165, in publish File /usr/local/zope/2-1-6/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: start) File /usr/local/zope/2-1-6/lib/python/ZPublisher/Publish.py, line 102, in call_object (Object: start) File /usr/local/zope/2-1-6/lib/python/OFS/DTMLMethod.py, line 150, in __call__ (Object: start) File /usr/local/zope/2-1-6/lib/python/DocumentTemplate/DT_String.py, line 502, in __call__ (Object: start) File /usr/local/zope/2-1-6/lib/python/DocumentTemplate/DT_With.py, line 148, in render (Object: o-e-s) File /usr/local/zope/2-1-6/lib/python/DocumentTemplate/DT_Util.py, line 335, in eval (Object: iterate(this(),where=REQUEST['where'])) (Info: this) File <string>, line 0, in ? File /usr/local/zope/2-1-6/lib/python/Products/ExternalMethod/ExternalMethod.py, line 248, in __call__ (Object: iterate) (Info: ((<Folder instance at 86b5fb8>,), {'where': <Folder instance at 869c2c0>}, None)) File /usr/local/zope/dev/2-1-6/Extensions/chris.py, line 36, in iterate (Object: ElementWithAttributes) File /usr/local/zope/dev/2-1-6/Extensions/chris.py, line 42, in iterate (Object: ElementWithAttributes) File /usr/local/zope/2-1-6/lib/python/OFS/CopySupport.py, line 290, in manage_clone (Object: ElementWithAttributes) File /usr/local/zope/2-1-6/lib/python/OFS/CopySupport.py, line 402, in _getCopy (Object: index_html) AttributeError: (see above)

2 1

Pickling Error and Method Delegation
by Kapil Thangavelu 11 Jul '00

11 Jul '00

What I am trying to do: I am developing a python product that is has several composed 'helper' classes. I am trying to setup a method delegation service to have certain methods of the helper classes called directly on the container. the helper methods are defined in a text list called external_api of the helper classes. The Problem: The code below works fine if i call it after the object is already in the zodb. I can call methods of the helper classes through the container. if however i try to put the method in the containers __init__ method i get an error back from zope about a pickle error. traceback below. If i remove this method from __init__ everything works fine again. Question: Whats going on? help... Platform: Linux 2.2.16 Zope 2.1.6 Code *** the try/except is only so the method doesn't barf on helper classes that don't define an external api, there is no hidden error. def setup_user_object(self): """ setup external api to be called on object """ # setups a method delegation service for the external api # not the most elegant but the one that worked first global AuthenticationManager, SessionManager, UserPreferences, UserInfo user_class_map = ( (SessionManager, "self.sm."), ) for user_class, user_obj_string in user_class_map: try: for method in user_class.external_api: for key, item in user_class.__dict__.items(): if key == method and type(item) == types.FunctionType: self.__dict__[key]=eval(user_obj_string+key) except: pass return self.__dict__.keys() Traceback Error Type: UnpickleableError Error Value: Cannot pickle objects Traceback (innermost last): File /home/ender/Zope-2.1.6-src/lib/python/ZPublisher/Publish.py, line 214, in publish_module File /home/ender/Zope-2.1.6-src/lib/python/ZPublisher/Publish.py, line 179, in publish File /home/ender/Zope-2.1.6-src/lib/python/Zope/__init__.py, line 202, in zpublisher_exception_hook File /home/ender/Zope-2.1.6-src/lib/python/ZPublisher/Publish.py, line 169, in publish File /home/ender/Zope-2.1.6-src/lib/python/ZODB/Transaction.py, line 237, in commit File /home/ender/Zope-2.1.6-src/lib/python/ZODB/Connection.py, line 325, in commit (Info: (('Products.SIN.UserObject', 'UserObject'), '\000\000\000\000\000\000\001]', '')) UnpickleableError: (see above)

1 0

RE: [Zope-dev] zope and UNIX permissions
by Chris McDonough 11 Jul '00

11 Jul '00

Which files? Know that if you untar as root, the files will be 'owned' by whoever tarred it up on our side. Untar it as a normal user. Reset the permissions of the ones you find too permissive. Then let us know so we can change the distribution. -----Original Message----- From: Leonardo Kenji Shikida [mailto:kenji@intelligenesis.net] Sent: Monday, July 10, 2000 7:15 PM To: zope-dev(a)zope.org Subject: [Zope-dev] zope and UNIX permissions We tried to install zope using its tar.gz file and it created a lot of files with non-default users and with very permissive permissions on a linux box (like 777 permissions for many files). This is a HUGE security hole. We couldn't install the RPMs files on our webserver. Is there any decent zope source code distribution? thanks in advance K.

2 1

zope and UNIX permissions
by Leonardo Kenji Shikida 10 Jul '00

10 Jul '00

We tried to install zope using its tar.gz file and it created a lot of files with non-default users and with very permissive permissions on a linux box (like 777 permissions for many files). This is a HUGE security hole. We couldn't install the RPMs files on our webserver. Is there any decent zope source code distribution? thanks in advance K.

1 0

Re: [Zope] Sorting a list
by Dieter Maurer 10 Jul '00

10 Jul '00

RC Compaan writes: > I have a list: > mylist=[('R',31),('I',80),('A',80),('S',23),('E',35),('C',21)] > > I want to rebuild the list sorted from high to low on the sequence-item. > > When i call <dtml-in mylist sort=sequence-item reverse> the list gets > sorted on the sequence-key not the sequence-item. As I understand the > alphabetical characters are the sequence-keys and the float values are the > sequence-items. > > Where do misunderstand? What you see is caused by the following code in "DocumentTemplate.DT_In.InClass.__init__": if has_key('sort'): self.sort=sort=args['sort'] if sort=='sequence-item': self.sort='' This means, "dtml-in sort=sequence-item" does not sort by "sequence-item" but by the complete tuple (key,item). I think, the special treatment of lists of pairs is altogether a slight misfeature. It would probably have been better to use a special "dict" attribute in analogy to the "mapping" attribute to call for the special pair interpretation. 'sequence-item' should then still be the complete item and 'sequence-value' the second pair component. Probably, it is too late by now to change this. Dieter

1 0

Re: [Zope-dev] NASTY error. Why?
by Dieter Maurer 10 Jul '00

10 Jul '00

Chris Withers writes: > I'm trying to do a tree walk and copy with: > > <dtml-in objectValues> > <dtml-call "REQUEST['where'][-1].manage_addFolder(id)"> > Created <dtml-var id> in <dtml-var "REQUEST['where'][-1].id"><BR> > <dtml-if "meta_type=='Folder'"> > <dtml-call "REQUEST['where'].append(this())"> > <dtml-var iterate> > <dtml-call "REQUEST['where'].pop()"> > > ....etc... > > but I get the following truly horrible error from the manage_addFolder > > any ideas? > > Chris > > Error Type: TypeError > Error Value: read-only character buffer, Python Method "manage_addFolder" wants to have a string argument (that is what "read-only character buffer" usually means). Instead, it get a "Python Method". Explanation: "id" is often a method returning a string, not directly a string. Sometimes, i.e. for some classes, it is the string itself. You may use "_['id']". This is equivalent to "id()", if "id" is callable and to "id", if it is not. Dieter

1 0

RE: [Zope-dev] NASTY error. Why?
by Brian Lloyd 10 Jul '00

10 Jul '00

> Interesting commentary from the Interfaces Wiki: > > http://www.zope.org/Members/michel/Projects/Interfaces/ObjectM > anagerItem > > """Some old objects provide id methods that return ids. This practice > should be avoided for new objects. We can't change the old objects for > backward compatability reasons. Maybe we should fix this in > Zope 3.0.""" This is one of the things on my List Of Evil Things that should be changed one day in Zope3K :) Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

1 0

NASTY error. Why?
by Chris Withers 10 Jul '00

10 Jul '00

Hi, I'm trying to do a tree walk and copy with: <dtml-in objectValues> <dtml-call "REQUEST['where'][-1].manage_addFolder(id)"> Created <dtml-var id> in <dtml-var "REQUEST['where'][-1].id"><BR> <dtml-if "meta_type=='Folder'"> <dtml-call "REQUEST['where'].append(this())"> <dtml-var iterate> <dtml-call "REQUEST['where'].pop()"> ...etc... but I get the following truly horrible error from the manage_addFolder any ideas? Chris Error Type: TypeError Error Value: read-only character buffer, Python Method Traceback (innermost last): File /usr/local/zope/2-1-6/lib/python/ZPublisher/Publish.py, line 214, in publish_module File /usr/local/zope/2-1-6/lib/python/ZPublisher/Publish.py, line 179, in publish File /usr/local/zope/2-1-6/lib/python/Zope/__init__.py, line 202, in zpublisher_exception_hook (Object: ElementWithAttributes) File /usr/local/zope/2-1-6/lib/python/ZPublisher/Publish.py, line 165, in publish File /usr/local/zope/2-1-6/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: start) File /usr/local/zope/2-1-6/lib/python/ZPublisher/Publish.py, line 102, in call_object (Object: start) File /usr/local/zope/2-1-6/lib/python/OFS/DTMLMethod.py, line 150, in __call__ (Object: start) File /usr/local/zope/2-1-6/lib/python/DocumentTemplate/DT_String.py, line 502, in __call__ (Object: start) File /usr/local/zope/2-1-6/lib/python/DocumentTemplate/DT_With.py, line 148, in render (Object: o-e-s) File /usr/local/zope/2-1-6/lib/python/OFS/DTMLMethod.py, line 146, in __call__ (Object: iterate) File /usr/local/zope/2-1-6/lib/python/DocumentTemplate/DT_String.py, line 502, in __call__ (Object: iterate) File /usr/local/zope/2-1-6/lib/python/DocumentTemplate/DT_In.py, line 691, in renderwob (Object: objectValues) File /usr/local/zope/2-1-6/lib/python/DocumentTemplate/DT_Util.py, line 335, in eval (Object: REQUEST['where'][-1].manage_addFolder(id)) (Info: REQUEST) File <string>, line 0, in ? File /usr/local/zope/2-1-6/lib/python/OFS/Folder.py, line 119, in manage_addFolder (Object: ElementWithAttributes) File /usr/local/zope/2-1-6/lib/python/OFS/ObjectManager.py, line 231, in _setObject (Object: ElementWithAttributes) File /usr/local/zope/2-1-6/lib/python/OFS/ObjectManager.py, line 200, in _checkId (Object: ElementWithAttributes) File /usr/local/zope/2-1-6/lib/python/ts_regex.py, line 139, in match TypeError: (see above)

3 5

RE: [Zope-dev] _delObject Method
by Brian Lloyd 10 Jul '00

10 Jul '00

> Can anybody tell me, what the 'dp=1' attribute in the > _delObject methods of > the ObjectManager (OFS/ObjectManager.py) and ZClassMethodsSheet > (ZClasses/Method.py) Class are for? > I haven't found any method call, where dp is set and the > methods themselves > don't use it aswell. > > I would like to use it as a switch for (not) calling the > manage_beforeDelete > method, when the _delObject method is called by > CopySupport.manage_renameObject and > CopySupport.manage_pasteObject. In these > cases, manage_beforeDelete would not be called. To me that seems to be > correct, because during a cut-paste and a rename operation > the Objects are > not really deleted, they are just temporarily taken out of > the object-tree > and then inserted again. > Are there any problems with that? Gregor - I think that what you are talking about is already implemented for 2.2... Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

1 0