[Zope3-Users] Status of zsync

2008-01-19 Thread Achim Domma

Hi,

I'm interested in zsync, but cannot find much information via google.  
I'm using Zope 3.4b2 and there are docs for zsync but the tool seems  
not to be included!? I'm developing a small zope app and I want to  
sync my ZPT pages with the filesystem. Or is there another way to  
develop ZPT pages via filesystem using a text editor like vim?


regards,
Achim 
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[Zope3-Users] ImportError running bin/zopectl run myScript.py

2008-01-17 Thread Achim Domma

Hi,

I try to run a script on my zope instance via bin/zopectl run  
myScript.py. I get the following error:


Traceback (most recent call last):
  File /Users/domma/develop/zope/demo/bin/scriptzope, line 22, in ?
import paths
ImportError: No module named paths

I cannot find a paths.py on my system. Any hint what I'm doing wrong?

regards,
Achim
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[Zope3-Users] Beginner: Reference to ZPT macros

2008-01-16 Thread Achim Domma

Hi,

I have a simple view. Here is the entry in configure.zcml:

  browser:page
  for=.CMS.Page
  name=index.html
  class=.CMS.PageView
  permission=zope.Public
  template=index.pt
  menu=zmi_views
  title=Default View
  /

The view works fine so far, but now I want to use a template macro to  
implement a common layout. So I created a layout.pt in the same  
folder as index.pt. In index.pt I try to reference layout.pt like this:


div xmlns:metal=http://xml.zope.org/namespaces/metal; metal:use- 
macro=context/@@layout.pt/macros/default_layout

div metal:fill-slot=content
div tal:content=structure view/html_content/div
/div
/div

Now I get an TraversalError but I could not figure out why. How do I  
have to reference layout.pt? Do I have to register the emplate  
somehow? I work with Philips book, but he uses a template created via  
ZMI in his example.


regards,
Achim
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[Zope3-Users] Debugging Zope3 with Winpdb

2006-07-23 Thread Achim Domma

Hi,

I try to debug zope 3 with winpdb, but without success. Was anybody able 
to let zope 3 run within winpdb. Winpdb seems to start my z3.py script 
but the looses the connection to the process. I see no error messages 
and I'm quite new to winpdb.


Any help would be very appreciated!

regards,
Achim
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[Zope3-Users] Expressing n:m relationship in ZODB

2006-07-11 Thread Achim Domma

Hi,

there was a discussion about the bad idea to simulate a relational 
database in ZODB using indexes and unique ids. So I wonder what's the 
correct way to express a n:m realtionship between objects.


For example: I have projects and articles. An article might be relevant 
for multiple projects and a project might have multiple relevant 
articles. Could I simply give each object a list containing the related 
objects? Or is this kind of circular reference a problem?


regards,
Achim
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Re: [Zope3-Users] Expressing n:m relationship in ZODB

2006-07-11 Thread Achim Domma

Leonardo Rochael Almeida wrote:


In usual Object Oriented modeling, an n:m relationship is usually
modeled as a collection of relationship objects each one keeping one
direct reference to each side of the relationship. Of course, using
these systems that already try to model relationships helps you not to
reinvent another wheel.


I think I understand. So if I would like to reinvent another wheel, just 
for the educatinal purpose, I should do it like this:


If I have IArticle and IProject which should have a relationship, I 
would introduce IArticleProjectRelation which holds a reference to the 
related objects. These relation objects will be managed by an 
IArticleProjectRelationManager which has an interface like:


relate(article,project)
unrelate(article,project)
get_related_articles(project)
get_related_projects(article)

In that case, IArticleProjectRelation would be an implementation detail 
of IArticleProjectRelationManager and I do not have to expose it at all. 
And in Zope 3 terms, I would implement the manager as a local utility. 
Right so far?


If yes, I could add helper methods to IArticle and IProject which 
encapsulate the access of the utility to hide this detail from the user. 
Would you do that? Or has it some drawbacks which I don't see yet?


thanks for your help,

Achim
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[Zope3-Users] Zope 3 as WSGI app using mod_python

2006-07-08 Thread Achim Domma

Hi,

I'm interested in running Zope 3 via mod_python as WSGI app directly in 
apache. I like the idea to configure different instances simply in my 
apache config and don't have to setup different running zope instances.


The official docs do not say much about this option, but there is a 
WSGI handler and I found for example this sample configuration:


http://codespeak.net/svn/z3/modzope/trunk/democonf/apache2.conf

Could somebody tell me what the status of this stuff is? Is it just an 
experiment which might be dropped in the future? Has somebody 
experiences to share?


regards,
Achim
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[Zope3-Users] Create catalog index via script

2006-06-17 Thread Achim Domma

Hi,

I have a workspace object, which I initialize in the 
IObjectCreatedEvent. I try to add a catalog with an index like this:


ensureUtility(workspace,zope.app.intid.interfaces.IIntIds,'',IntIds,asObject=True)
catalog=ensureUtility(workspace,zope.app.catalog.interfaces.ICatalog,'',Catalog,asObject=True)
catalog[tmp]=CategoryIndex()

workspace derives from Folder and is already a Site at this point. The 
last line causes the following error:


ComponentLookupError: (InterfaceClass 
zope.app.intid.interfaces.IIntIds, '')


If I remove the line, it works fine. I can see the Catalog in my 
Workspace and can add the CategoryIndex without problem!?


Seems like I'm missing something in the setup of the IIntIds utility, 
but I have no idea what it is.


regards,
Achim
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[Zope3-Users] ForbiddenAttribute: ('append', []) using append on PersistentList

2006-06-17 Thread Achim Domma

Hi,

I have implemented a view for a catalog index. The page template 
contains this little form to add strings to a list of categories:


form action=@@add_category method=post
input type=text name=name
input type=submit   
/form

The view class looks like this:

class EditView(object):
def categories(self):
return self.context.categories

def add_category(self,name):
self.context.categories.append(name)

Together they are registered as:

browser:page
name=categories.html
title=Categories
menu=zmi_views
permission=zope.ManageServices
for=proCoders.interfaces.ICategoryIndex
class=.CategoryIndex.EditView
template=CategoryIndex.pt
/

browser:page
for=proCoders.interfaces.ICategoryIndex
name=add_category
class=.CategoryIndex.EditView
attribute=add_category
permission=zope.ManageServices/

If I submit the form, add_category is called, but I get the following error:

ForbiddenAttribute: ('append', [])

Any hint what I'm doing wrong?

regards,
Achim
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Re: [Zope3-Users] Custom index implementation

2006-06-06 Thread Achim Domma

Tom Dossis wrote:


You need to specify an addMenuItem directive and associated view in
your package browser zcml to enable you to add your index objects via
the ZMI.  Look at zope/app/catalog/browser/configure.zcml as a starting
point, e.g.


Thanks for the hint and sorry for asking such obvious things. But I'm 
still a Zope beginner and digging into a new topic I sometimes forget 
what I've already learned. :-(


regards,
Achim
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[Zope3-Users] testing using placefulSetUp, zcml and events

2006-06-05 Thread Achim Domma

Hi,

I have a content object I want to set up in a IObjectCreatedEvent event 
handler. I want to use the interactive interpreter to play with this, 
but it looks like my configure.zcml is not parsed and executed if I use 
placefulSetUp.


How do I have to setup my environment to test zcml configured events 
from command line? Basically I want to write something like


some_setup_method()
root[ws]=Workspace() # should trigger and handle IObjectCreatedEvent
for key in root[ws).keys():
print key

to check if the object is setup correctly.

regards,
Achim
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[Zope3-Users] Create RSS feed

2006-05-31 Thread Achim Domma

Hi,

I want to provide an RSS for a content object which is a site. Seems to 
me, like this should be a generic functionality so I wonder if there is 
already some product which I did not found!?


regards,
Achim

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Re: [Zope3-Users] Problem with containment and @@absolut_url

2006-05-30 Thread Achim Domma

Mats Nordgren wrote:


context/articles would return the id's

[...]

The id is a string which has a title method (capitalize each worlds first
letter); this is why your article/title is working.

[...]

You probably should use context/articles/values for the loop.


Thanks, it works now. The availability of 'title' confused me. I didn't 
knew about this method.


regards,
Achim

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Re: [Zope3-Users] Create complex object

2006-05-25 Thread Achim Domma

Achim Domma wrote:


class IWorkspace(Interface):

[...]


browser:addform
label=Add proCoders Article
name=AddArticle.html
schema=proCoders.interfaces.IArticle
content_factory=proCoders.Article.Article
permission=zope.ManageContent
fields=title
/

[...]

Thanks to Frank for his solution, but I should not post messages late at 
night: I simply added the fields=title attribute to the wrong 
browser:addform.


If I add the attribute to the right tag, it works fine. Just for the 
records, in case somebody has the same problem.


regards,
Achim
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Re: [Zope3-Users] Reference to a COM object (or other external resource) in a Zope object

2006-05-24 Thread Achim Domma

[EMAIL PROTECTED] wrote:

I am creating a kind of Zope proxy to a 3rd party COM object (I'm accessing it using Pywin32 facilities). 
I have to store a reference to this object somewhere in my Zope object.
But, for obvious reasons, this COM object cannot be serialized so I cannot put it in any attribute of my Zope object. 
On the other side, initialisation of the object on each request is too timecost-consuming. 


With my still somewhat limited Zope knowledge, I would say it sounds 
like you should have a look at utilities.


regards,
Achim
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[Zope3-Users] Create complex object

2006-05-24 Thread Achim Domma

Hi,

I have the this interface

class IWorkspace(Interface):
title = TextLine(
   title=uTitle,
   description=uThe title,
   default=uproCoders Workspace,
   required=True)
projects = Container(title=uProjects, description=uxxx)
articles = Container(title=uArticles, description=uxxx)

with the following implementation

class Workspace(Persistent):
implements(IWorkspace)
title=u'proCoders workspace'
projects=None
articles=None

To set projects and articles I have registered an event subscriber. The 
handling functions is defined like this:


def onObjectCreated(parent,event):
if IWorkspace.providedBy(event.object):
workspace=IWorkspace(event.object)
workspace.projects=ProjectFolder()
workspace.articles=ArticleFolder()

I registered an add form with the following zcml statement:

browser:addform
label=Add proCoders Article
name=AddArticle.html
schema=proCoders.interfaces.IArticle
content_factory=proCoders.Article.Article
permission=zope.ManageContent
fields=title
/

I added the fields=title attribute, because I get the following error, 
if I try to create an instance of Workspace:


ComponentLookupError: ((zope.schema._bootstrapfields.Container object ...

It's clear to me, that the widgets for projects and articles can not be 
created, but I tought that if I set fields=title I will not show them!?


How do I solve this problem? Should I implement a mix-in class for the 
add view?


regards,
Achim
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[Zope3-Users] Changes on object not persistent if server is restarted.

2006-05-22 Thread Achim Domma

Hi,

I have written this simple content object:

class IArticle(Interface):
title = TextLine(
title=uTitle,
description=uThe title,
default=u,
required=True)

body = Text(
title=uBody,
description=uArticle Body,
default=u,
required=True)

class Article(object):
implements(IArticle)
title=u''
body=u''

The body of the article is rendered as restructured text. I can create 
and edit articles via the automatically generated forms. Everything 
worked fine, but currently my changes are not persistent if I restart 
the server.
The body is not empty after restart, but holds an older version. I'm 
working with the SVN version of Zope 3.


Any hint what I might be doing wrong?

regards,
Achim

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Re: [Zope3-Users] Changes on object not persistent if server is restarted.

2006-05-22 Thread Achim Domma

Jachin Rupe wrote:


You could try making Acrticle inherit from Persistent.


Ups! That's really a very stupid error. Thanks for your fast answer and 
sorry for bothering the list with such trivial problems.


regards,
Achim

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Re: [Zope3-Users] Re: How to distribute distinct components among multiple Zope servers?

2006-05-17 Thread Achim Domma

Reinhold Strobl wrote:


Consider the followng example: one company has got a Zope application running on
a single server. This applications need the components of e.g. the supplier of
the component running on a different server. So I don't want to mirror both,
because the both companies are more or less independent. So I assume the only
possible is XML-RPC (with its limitations of restricted data types and so on)?


I'm not a Zope expert, but to me it sounds like you want to solve a 
problem with Zope, which it is not intended for. If you want to 
implement complex distributed scenarios use SOAP, XML-RPC, CORBA, DCOM, 
... or whatever suits your needs.
Then you could still implement a thin Zope utility, which wraps access 
to such an service, to allow easy access from within a Zope application.


regards,
Achim
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[Zope3-Users] Skinning in Zope 3.3

2006-05-11 Thread Achim Domma

Hi,

I try to understand how to customize the look  feel of my page using 
the new skin/layer implementation of version 3.3. I followed the example 
on 
http://www.zope.org/Wikis/DevSite/Projects/ComponentArchitecture/SimplifySkinning 
 but still don't understand on how to change the layout of my page.


Could somebody provide a short hint on how to override 
@@standard_macros/page for the ShanghaiSkin in the example above?


regards,
Achim
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[Zope3-Users] Integrating text indexing engine into Zope 3

2006-04-28 Thread Achim Domma

Hi,

I want to integrate support for a specialized text indexing engine into 
Zope 3. The engine is able to provide documents which are similar to a 
reference document.


First I had a look at ICatalog, but IInjection seems to be the way to 
go. Could somebody give me a high level overview on how to use / 
implement these interfaces?


I currently think about the following steps:

- Implement the index as local utility.
- Define an interface IMyStorageDocument for documents to be stored in 
my index.
- Capture somehow if objects are created or deleted. Check if the object 
can be adapted to IMyStorageDocument. If yes, store it in the index or 
remove it.


Clients then only have to implement an adapter for documents which 
should be indexed. To search for documents one could access the index as 
local utility.


I'm still a Zope beginner and would be happy to have some guidance into 
the right direction.


regards,
Achim
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[Zope3-Users] Understanding authentication

2006-04-15 Thread Achim Domma

Hi,

I have created a folder main below [top] and converted it into a site. 
I added a PAU to the site management folder and a Principal Folder to 
the PAU. I registered all utilities.


Then I created a new principal demo1 and after that a new subfolder 
below main. I switched to the subfolder and granted management and 
view permissions to demo1.


But I'm not able to login as demo1!? If I add Session Credentials 
utility to the PAU, I get an endless loop which tries to redirect to a 
login.htm. Using Zope Real Basic-Auth the login simply fails.


Is there a simple example on how to setup a sub-site with a PAU and to 
allow login to a principal from this PAU.


regards,
Achim
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Re: [Zope3-Users] understanding security

2006-04-07 Thread Achim Domma

Frank Burkhardt wrote:

Do I understand it right, that I do not grant a permission to a principal on a certain 
object instance? I only grant a permission to use a certain interface!?



You can either grant permissions to principals (or groups/roles) globally. 
Those permissions
can be used in multiple ways:
   * To protect Views. You can only access views you have permissions for (e.g. 
browser:page ... )
   * To protect attributes/methods of classes (*not objects*) (class 
...required interface=...)
   * To define, who is allowed to modify certain attributes (class ...required 
set_schema=... )


I can follow to this point. That's how I understand Zope security until now.


Additionally you may grant permissions (and role memberships) on a per object 
(*not per class*)
basis ( using e.g. the grant.html-View) which effects only a single object.


That's what I was looking for, but don't know how to do. For I example:

I want to let a user create an object (i.e. a message in a message 
board). All users with a certain role (i.e. Admins) should be able to 
edit the new object, but the creating user should also be able to edit 
it. So I have to give him the persmission to edit.


How can I do something like that?

regards,
Achim

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