Re: [Zope-dev] Recursive folders from Python
Try something like (taken from my own code, so it works for me, caveta
emptor):
def mkcontext(self,context=None):
global default_dd
if not context:
return 'EH!'
c=string.split(context,'/')
newself=self
for a in c:
try:
newself.manage_addFolder(a,createPublic=0,createUserF=0,REQUEST=getattr(self
,'REQUEST',None))
except:
pass
newself=getattr(newself,a) ## this is the relevant line
newself.manage_addLocalRoles(c[-1],['Manager'])
try:
newself.manage_addDTMLMethod('index_html','Start
Page',file=default_dd)
except:
pass
This func takes a slash separated list of folders (actually a NDS context
like 'dacs/media/stf/wmlph' and creates the folder hierarchy.
It's probably overkill for what you want but the relevant line is the
getattr one (as marked).
hth
Phil
- Original Message -
From: "Dieter Maurer" [EMAIL PROTECTED]
To: "Jason Spisak" [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Sent: Monday, October 30, 2000 6:43 PM
Subject: Re: [Zope-dev] Recursive folders from Python
Jason Spisak writes:
Does anyonw know why this code won't create a folder within a folder.
It's tells me the id is already in use, so that means it's not
descending into the newly created folder to make another folder.
def create(self):
for digit in range(0, 10):
folder= self.manage_addFolder(str(digit), str(digit))
subfolder = self.folder.manage_addFolder(str(digit),
str(digit))
Apparently, the above line should add a new folder in (say) '00'.
What it does, however, is trying to add the new folder in the object named
'folder' (accessible from 'self'). This may well go wrong.
Keep in mind, that the local name space of the function 'create'
(where your variable 'folder' lives) is disjunct from the attribute
namespace of 'self' (where the attribute 'folder' lives).
Dieter
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[Zope-dev] Using the monitor_client
When using the monitor_client, I do this:
-- Start monitor_client usage
python monitor_client.py localhost 8099
Enter Password:
warning: unhandled connect event
Python 1.5.2 (#1, Mar 11 2000, 13:03:53) [GCC 2.95.2 19991024 (release)]
Copyright 1991-1995 Stichting Mathematisch Centrum, Amsterdam
Welcome to secure_monitor_channel connected 127.0.0.1:2959 at 88fbf80
import Zope
app=Zope.app()
app.addDTMLMethod
Traceback (innermost last):
File "/usr/local/Zope/ZServer/medusa/monitor.py", line 94, in found_terminator
result = eval (co, self.local_env)
File "secure_monitor_channel connected 127.0.0.1:2959 at 88fbf80", line 0, in ?
AttributeError: addDTMLMethod
app.manage_addDTMLMEthod
Traceback (innermost last):
File "/usr/local/Zope/ZServer/medusa/monitor.py", line 94, in found_terminator
result = eval (co, self.local_env)
File "secure_monitor_channel connected 127.0.0.1:2959 at 88fbf80", line 0, in ?
AttributeError: manage_addDTMLMEthod
app.manage_addDTMLMethod
Python Method object at 82ee058
app.manage_addDTMLMethod('tester','tester','tester')
''
app._p_jar.sync()
get_transaction().commit()
warning: unhandled close event
closed.
morten@slakka:/usr/local/Zope/ZServer/medusa
-- End monitor_client usage
However, when I enter the management screen of the Zope instance, no DTMLMethod
called tester is listed..
(I used http://www.zope.org/Documentation/Misc/DEBUGGING.txt as a guide..)
Can anyone see what I'm doing wrong?
Thanks in advance.
-Morten
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Re: [Zope-dev] ZPatterns + Skinscript
OK I think I found the problem(s): *** Expressions.py 2000/10/18 23:11:55 1.1.1.3 --- Expressions.py 2000/10/31 14:14:09 *** *** 133,139 def eval(self,mapping): """Return the result of looking up/calling the name from 'mapping'. If the object was created with 'call==1', call it before returning it.""" ! return md.getitem(self.name,self.call) del Eval, expr_globals, TemplateDict, Base, ComputedAttribute --- 133,139 def eval(self,mapping): """Return the result of looking up/calling the name from 'mapping'. If the object was created with 'call==1', call it before returning it.""" ! return mapping.getitem(self.name,self.call) del Eval, expr_globals, TemplateDict, Base, ComputedAttribute *** SkinScript/Compiler.py 2000/10/18 23:11:56 1.1.1.4 --- SkinScript/Compiler.py 2000/10/31 14:12:09 *** *** 168,174 class Compute(AST): type = 'COMPUTE' ! def __init__(self,*args,**args): self._kids=list(args)+kw.items() class Trigger(Compute): --- 168,174 class Compute(AST): type = 'COMPUTE' ! def __init__(self,*args,**kw): self._kids=list(args)+kw.items() class Trigger(Compute): Try these patches and see if it works... -steve ___ Zope-Dev maillist - [EMAIL PROTECTED] 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 )
Re: [Zope-dev] Using the monitor_client
[Yves-Eric Martin] | - Zope.app() gives you a *copy* of the *real* application object. | - app._p_jar.sync() reloads your copy with the real (losing your changes) Ah, there it is; sync discards the changes made from the monitor, and then reloads... An extra thanks for the thorough (not-very-newbie-like) explanation, much appreciated! =) -Morten ___ Zope-Dev maillist - [EMAIL PROTECTED] 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 )
Re: [Zope-dev] Using the monitor_client
Yves-Eric Martin wrote: I am no Zope monitor expert, but maybe you will find my newbie point For some definition of newbie... :-) of view helpful. Here is my understanding of the magic of this very helpful tool: - Zope.app() gives you a *copy* of the *real* application object. - app._p_jar.sync() reloads your copy with the real (losing your changes) - get_transaction().commit() writes your copy to the real (applying your changes) I didn't realize sync() was there. Thanks for the tip! Shane ___ Zope-Dev maillist - [EMAIL PROTECTED] 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 )
Re: [Zope-dev] ZPatterns + Skinscript
Hi Joachim, "Joachim" == Joachim Schmitz [EMAIL PROTECTED] writes: Joachim Hi Steve, Joachim that did it, many thanks, how did you debug this ? The debugger is your friend. ;-). Seriously I'd be lost without it: http://www.zope.org/Members/michel/HowTos/TheDebuggerIsYourFriend Joachim By the way, it only work if specify a DataSkin derived ZClass Joachim under the Storage tab. Yes... did you attempt to use a 'pure' DataSkin? -steve ___ Zope-Dev maillist - [EMAIL PROTECTED] 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 )
Re: [Zope-dev] ZPatterns + Skinscript
Hi Steve, On Tue, 31 Oct 2000, Steve Spicklemire wrote: Joachim By the way, it only work if specify a DataSkin derived ZClass Joachim under the Storage tab. Yes... did you attempt to use a 'pure' DataSkin? after your advise not to use a 'pure' DataSkin, I did all the testing with a DataSkin derived ZClass, when that was working, I tried the 'pure' DataSkin and it didn't work. Mit freundlichen Grüßen Joachim Schmitz AixtraWare, Ing. Büro für Internetanwendungen Hüsgenstr. 33a, D-52457 Aldenhoven Telefon: +49-2464-8851, FAX: +49-2464-905163 ___ Zope-Dev maillist - [EMAIL PROTECTED] 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 )
Re: [Zope-dev] Compiling of the DynPersist module (ZPatterns)
At 04:44 PM 10/30/00 +0100, Morten W. Petersen wrote: After compiling the DynPerist module, I try to import it in the Python interpreter: """ morten@slakka:/usr/local/Zope/lib/python/Products/ZPatterns gcc -o DynPersist.so -c DynPersist.c -I../../ZODB -I../../../Components/ExtensionClass -I/usr/include/python1.5 morten@slakka:/usr/local/Zope/lib/python/Products/ZPatterns python Python 1.5.2 (#1, Mar 11 2000, 13:03:53) [GCC 2.95.2 19991024 (release)] on linux2 Copyright 1991-1995 Stichting Mathematisch Centrum, Amsterdam import DynPersist Traceback (innermost last): File "stdin", line 1, in ? ImportError: ./DynPersist.so: ELF file's phentsize not the expected size """ Any ideas what I'm doing wrong (is it maybe the compiler)? There's a couple things wrong here. First, you're compiling a .c directly to an .so, which is wrong. GCC is obeying your command and making a .o file with an .so extension, which will not work. You really should use the standard python module make process. Copy Makefile.pre.in from your python tree into the directory, then run "make -f Makefile.pre.in boot", followed by "make". Then you'll end up with a working DynPersist.so. Second, don't try to load it from python in the ZPatterns directory, because DynPersist is dependent on the cPersistence and ExtensionClass .so modules, which Python won't be able to find if you run it in that directory. You need to include the directories containing those things on your PYTHONPATH, if you want to use it. As a practical matter, however, DynPersist is pretty useless outside the Zope environment, so I'd say just build it the correct way and give it a try in Zope. ___ Zope-Dev maillist - [EMAIL PROTECTED] 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 )
Re: [Zope-dev] ZPatterns + Skinscript
At 04:42 PM 10/31/00 +0100, Joachim Schmitz wrote: Hi Steve, On Tue, 31 Oct 2000, Steve Spicklemire wrote: Joachim By the way, it only work if specify a DataSkin derived ZClass Joachim under the Storage tab. Yes... did you attempt to use a 'pure' DataSkin? after your advise not to use a 'pure' DataSkin, I did all the testing with a DataSkin derived ZClass, when that was working, I tried the 'pure' DataSkin and it didn't work. DataSkin is strictly a mix-in class. Sometimes I forget to remind people of that, and sometimes I even forget it myself. :( ___ Zope-Dev maillist - [EMAIL PROTECTED] 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 )
Re: [Zope-dev] ZPatterns + Skinscript
"Phillip J. Eby" wrote: DataSkin is strictly a mix-in class. Sometimes I forget to remind people of that, and sometimes I even forget it myself. :( DataskinAddons provides a nice DataSkin-derived class for debugging purposes - it has a debug() method that prints out __dict__, and lets you getattr attributes through the web as well. So you can use that for testing purposes. http://www.zope.org/Members/stevea/DataSkinAddons -- Itamar S.T. [EMAIL PROTECTED] Fingerprint = D365 7BE8 B81E 2B18 6534 025E D0E7 92DB E441 411C ___ Zope-Dev maillist - [EMAIL PROTECTED] 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 )
[Zope-dev] ZPatterns/PlugIns bug fix releases
I've released new 0.4.3 beta 2 versions of ZPatterns and PlugIns to fix the minor bugs reported to date in beta 1. Specifically, the PlugIns package now contains a "help" directory, and the problem with "name" shorthand in SkinScript has been fixed as well. They can be found in the usual places. (By the way, if you haven't yet seen the latest zope.org download page, it's really cool... go to http://www.zope.org/Products/ and check it out.) ___ Zope-Dev maillist - [EMAIL PROTECTED] 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 )
[Zope-dev] Questions about implementing object models with ZPatterns
Hi, How do I implement gen-spec classes using ZPatterns and ZClasses? For example, I want to implement Person and Customer. Writing it in Python, it would be easy to subclass Person to get Customer, and Customer would inherit Person's properties and methods. If I instead create a specialist and ZClass for each class, do I use a SkinScript to remap Person's properties into Customer? And what about the methods - Customer can't inherit Person's methods, so I have to write methods in Customer which call the same methods in Person. This seems terribly complicated... am I missing something? Another question: In Coad's examples, if a class has an 'n' order relationship to another class - say Order and OrderItems, Order would contain a list of OrderItems. Each OrderItem would contain the id of the Order it belongs to. It seems to me that it would be easier for Order to call OrderItems.getItemsForOrder(self.id), then I don't have to maintain a list in Orders, and if I add an OrderItem the Order will immediately know about it without me having to call it and tell it the OrderItem was added. Is there anything wrong with this approach? TIA, Itai -- Itai Tavor"Je sautille, donc je suis." C3Works[EMAIL PROTECTED] - Kermit the Frog "If you haven't got your health, you haven't got anything" ___ Zope-Dev maillist - [EMAIL PROTECTED] 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 )
Re: [Zope-dev] Questions about implementing object models with ZPatterns
At 12:35 PM 11/1/00 +1100, Itai Tavor wrote: Hi, How do I implement gen-spec classes using ZPatterns and ZClasses? For example, I want to implement Person and Customer. Writing it in Python, it would be easy to subclass Person to get Customer, and Customer would inherit Person's properties and methods. If I instead create a specialist and ZClass for each class, do I use a SkinScript to remap Person's properties into Customer? And what about the methods - Customer can't inherit Person's methods, so I have to write methods in Customer which call the same methods in Person. This seems terribly complicated... am I missing something? If you want subclasses, just subclass ZClasses. As for the remapping, etc., it depends on what you want to do. Keep in mind that Specialists are created per *role* or *interface*, not per class. You can have a "People" specialist that has a personRack and a customerRack in it, for example. Specialists are application- and usage-driven; you don't always end up creating specialists for every class in your object model. (By the way, note that if you have a personRack and customerRack in the same specialist, they can share data plug-ins (such as SkinScript methods) placed directly in the specialist. The ranking order of the parent plug-ins in the child racks is determined by where you place a "Link to Parent Data Plug-Ins" in the racks' data plug-in lists.) Another question: In Coad's examples, if a class has an 'n' order relationship to another class - say Order and OrderItems, Order would contain a list of OrderItems. Each OrderItem would contain the id of the Order it belongs to. It seems to me that it would be easier for Order to call OrderItems.getItemsForOrder(self.id), then I don't have to maintain a list in Orders, and if I add an OrderItem the Order will immediately know about it without me having to call it and tell it the OrderItem was added. Is there anything wrong with this approach? Nothing at all. It's the recommended approach, actually. This is how you make frameworks work... by delegating to specialists responsible for a role in the application. That is, instead of the Orders system having to know anything about how order items are actually implemented, it can delegate that function to an OrderItems specialist that could have such things as DiscountItems, ReturnItems, and all sorts of other objects that implement an OrderItem interface. Similarly, rather than an Order providing its own interface for entering an order item, the UI code can be (should be) placed in the OrderItems specialist, and called by the Order object's add/edit forms. Encapsulation at its very best. :) That's the ZPatterns way; the tools were specifically created to make it easy to do things the "right" way from a seperation-of-powers standpoint. ___ Zope-Dev maillist - [EMAIL PROTECTED] 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 )
Re: [Zope-dev] Questions about implementing object models withZPatterns
Phillip J. Eby wrote: At 12:35 PM 11/1/00 +1100, Itai Tavor wrote: Hi, How do I implement gen-spec classes using ZPatterns and ZClasses? For example, I want to implement Person and Customer. Writing it in Python, it would be easy to subclass Person to get Customer, and Customer would inherit Person's properties and methods. If I instead create a specialist and ZClass for each class, do I use a SkinScript to remap Person's properties into Customer? And what about the methods - Customer can't inherit Person's methods, so I have to write methods in Customer which call the same methods in Person. This seems terribly complicated... am I missing something? If you want subclasses, just subclass ZClasses. As for the remapping, etc., it depends on what you want to do. Keep in mind that Specialists are created per *role* or *interface*, not per class. You can have a "People" specialist that has a personRack and a customerRack in it, for example. Specialists are application- and usage-driven; you don't always end up creating specialists for every class in your object model. Ok... I think I get the "Specialist per role, not per class" part. But I still can't make the jump from a class diagram to a ZClass/Specialist setup. I can solve some of it by subclassing ZClasses. So, if I need Customers and Resellers, I'll make a Specialist for each, and a Customer and Reseller ZClasses, both subclassed from Person which stores common properties for a person. This part is ok. But it gets more complex than that. Take this example: Every OrderLineItem object can have one or more Payment objects associated with it. There are 3 possible payment types - Check, Charge and BankDeposit, so I make a ZClass for each one, all subclassed from a general Payment ZClass. I create one Payments Specialist with 3 Racks. Where do I store methods that are specific to one payment type? In the Rack? I can't store them in the Specialist - it would be a mess, and I can't store them in the ZClass, because the ZClass doesn't know about the rest of the application. Actually, writing this down makes me realize that it could work... would Payments.getItem(some_payment_id).someMethod() call someMethod in the Rack if one exists, and the one in the Specialist if not? I guess that would make it very easy... subclassing moves into the Specialist. Another problem I'm having is how to store id's for different objects in the the same field. In the Payments example above this is not a problem, because all payments are supplied by the Payments specialist. But what about another example - Customers and Resellers are two totally different roles, so they each get a Specialist. the Payment object has from_id and to_id fields, and each of those can hold the id of a customer or reseller, or some special code to indicate the store. I could add from_type and to_type fields, or I could prefix the id with a code letter, but neither seem like a good solution. Is there a recommended approach for solving this problem? (By the way, note that if you have a personRack and customerRack in the same specialist, they can share data plug-ins (such as SkinScript methods) placed directly in the specialist. The ranking order of the parent plug-ins in the child racks is determined by where you place a "Link to Parent Data Plug-Ins" in the racks' data plug-in lists.) Another question: In Coad's examples, if a class has an 'n' order relationship to another class - say Order and OrderItems, Order would contain a list of OrderItems. Each OrderItem would contain the id of the Order it belongs to. It seems to me that it would be easier for Order to call OrderItems.getItemsForOrder(self.id), then I don't have to maintain a list in Orders, and if I add an OrderItem the Order will immediately know about it without me having to call it and tell it the OrderItem was added. Is there anything wrong with this approach? Nothing at all. It's the recommended approach, actually. This is how you make frameworks work... by delegating to specialists responsible for a role in the application. That is, instead of the Orders system having to know anything about how order items are actually implemented, it can delegate that function to an OrderItems specialist that could have such things as DiscountItems, ReturnItems, and all sorts of other objects that implement an OrderItem interface. Similarly, rather than an Order providing its own interface for entering an order item, the UI code can be (should be) placed in the OrderItems specialist, and called by the Order object's add/edit forms. Encapsulation at its very best. :) That's the ZPatterns way; the tools were specifically created to make it easy to do things the "right" way from a seperation-of-powers standpoint. Thanks! I feel a little better now :) -- Itai Tavor"Je sautille, donc je suis." C3Works[EMAIL PROTECTED] - Kermit the Frog "If you haven't got your health, you
