[Zope-CMF] Re: Move CMF collector to Launchpad (redux)

2007-10-30 Thread Philipp von Weitershausen

Charlie Clark wrote:

Am 29.10.2007 um 21:17 schrieb Wichert Akkerman:


It seems that the Launchpad database is not separated by product. I
was just checking the bugs fixed in the latest relase of Zope and
#2339 refers to something completely different related to Ubuntu. I
would have expected bugs from unrelated projects to kept separate.


The fact that they are not is useful: it allows you to move a bugreport
from one product to another.


For any migration the loss of the bug id is pretty major.


The bug id won't be lost. Launchpad has a mapping between the old bug 
ids from the zope.org collector to the new launchpad ids. This works 
well for the Zope 2 and Zope 3 collectors already.



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[Zope-CMF] Re: Accessing the "context"

2007-10-30 Thread Rob Miller

robert rottermann wrote:

Charlie Clark schrieb:

Dear all,

a simple question with hopefully a simple answer! How do I access
objects from an object's context or hierarchy? Specifically I'd like to
be able to access a ZopeDA connection for a site. 


I
if you know the id of the object you are looking for beforehand you can
get it by just requesting it from the context like:

da = getattr('my_da_or_what_ever', context, None)
if da:
  ...



minor nit:

i strongly recommend "if da is not None" rather than just "if da".

if your 'da' object was a containerish object with no contained objects, then 
it would evaluate to False even though the object really existed.  it's 
generally unwise to assume that an object will evaluate to True just because 
it exists.


-r

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Re: [Zope-CMF] Accessing the "context"

2007-10-30 Thread Charlie Clark


Am 30.10.2007 um 18:13 schrieb robert rottermann:


there are two places where you can put your code, in both cases
acquisition is fully functional.


Thanks very much! Now hit an error that my database connection object  
can't be pickled but at least I can access it! :-D


Charlie
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[Zope-CMF] Re: Accessing the "context"

2007-10-30 Thread Tres Seaver
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Hash: SHA1

Wichert Akkerman wrote:
> Previously Charlie Clark wrote:
>> Am 30.10.2007 um 17:40 schrieb Wichert Akkerman:
>>
>>> __init__ is indeed the wrong place: when the instance is created it is
>>> not placed in an acquisition context yet.
>> That would indeed explain things!!! Is it okay to call a method which  
>> does this from __init__ ?
> 
> No, since the acquisition context is only created when the object is
> insert into the hierarchy somewhere (sloppy terminology here, I know).

Minor nit:  the acquisition wrappers are transient objects, created when
the object is retrieved from the container (typically via the
container's __getattr__).  So, the typical pattern for a factory which
needs to do something with context is:

  def foo_factory(container, name):
  foo = Foo(name)
  container._setObject(name, foo)
  wrapped = container._getOb(foo)
  # now we have context

> And that can only happen after the instance has been fully created.
> 
> As an example:
> 
>obj = Object()
># obj has no acquisition context
>folder.obj = obj
># folder.obj will have an acquisition context

Right, but the original 'obj' doesn't magically get a context:  you need
to re-fecth it (via 'foo.obj').

> In other words: in __init__ and everything you call from __init__ the
> instance will not have an aq context. The context does not magically
> appear.

Yup.



Tres.
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Re: [Zope-CMF] Accessing the "context"

2007-10-30 Thread robert rottermann
Wichert Akkerman schrieb:
> Previously Charlie Clark wrote:
>> Am 30.10.2007 um 17:04 schrieb Andrew Sawyers:
>>
>>> If it's in a content type's class, why not:
>>> id = getattr(self, 'da_id', None)
>>> Just using self as the context should be fine.
>>> -- that of course presumes that the type is wrapped properly when  
>>> you call that within your method.
>> mm, currently getting None back so I guess I'm not wrapping things  
>> properly.
>>
>> This is a skeleton bit of code:
>>
>> class ContentType(PortalContent):
>> """A content type with access to an external database"""
>>
>> def __init__(self, id):
>>  self.id = id
>> DA = getattr(self, 'MyDA', None)
>>  #self.conn = DA() # not working at the moment because DA is None
>>
>> Is it wrong to try and do this in my __init__ ? Regarding your other  
>> suggestion: yes, I probably will factor this out into a utility once  
>> I've worked out how to access the DA!!!
> 
> __init__ is indeed the wrong place: when the instance is created it is
> not placed in an acquisition context yet.

there are two places where you can put your code, in both cases
acquisition is fully functional.
if it is ATContentTyoe based you can add a method:

#
# AT specific, called after creation of the final
# instance
#
security.declarePrivate('at_post_create_script')
def at_post_create_script(self, member_id=None):
da = getattr(self, 'MyDA', None)

or if it is a "mere" CMF content type:

def manage_afterAdd(self, item, container):
"""
Add self to the catalog.
(Called when the object is created or moved.)
"""
da = getattr(self, 'MyDA', None)


robert
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Re: [Zope-CMF] Accessing the "context"

2007-10-30 Thread Wichert Akkerman
Previously Charlie Clark wrote:
> 
> Am 30.10.2007 um 17:40 schrieb Wichert Akkerman:
> 
> >__init__ is indeed the wrong place: when the instance is created it is
> >not placed in an acquisition context yet.
> 
> That would indeed explain things!!! Is it okay to call a method which  
> does this from __init__ ?

No, since the acquisition context is only created when the object is
insert into the hierarchy somewhere (sloppy terminology here, I know).
And that can only happen after the instance has been fully created.

As an example:

   obj = Object()
   # obj has no acquisition context
   folder.obj = obj
   # folder.obj will have an acquisition context

In other words: in __init__ and everything you call from __init__ the
instance will not have an aq context. The context does not magically
appear.

Wichert.

-- 
Wichert Akkerman <[EMAIL PROTECTED]>It is simple to make things.
http://www.wiggy.net/   It is hard to make things simple.
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Re: [Zope-CMF] Accessing the "context"

2007-10-30 Thread Charlie Clark


Am 30.10.2007 um 17:40 schrieb Wichert Akkerman:


__init__ is indeed the wrong place: when the instance is created it is
not placed in an acquisition context yet.


That would indeed explain things!!! Is it okay to call a method which  
does this from __init__ ?


def __init__(self, id):
self.id = id
self.set_connection()

security.declarePublic('set_connection')
def set_connection(self):
DA = (self, 'myDA', None)

This is also not working. :-/

Thanks very much for your help.

Charlie
--
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Helmholtzstr. 20
Düsseldorf
D- 40215
Tel: +49-211-938-5360
GSM: +49-178-782-6226



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Re: [Zope-CMF] Accessing the "context"

2007-10-30 Thread Wichert Akkerman
Previously Charlie Clark wrote:
> 
> Am 30.10.2007 um 17:04 schrieb Andrew Sawyers:
> 
> >If it's in a content type's class, why not:
> >id = getattr(self, 'da_id', None)
> >Just using self as the context should be fine.
> >-- that of course presumes that the type is wrapped properly when  
> >you call that within your method.
> 
> mm, currently getting None back so I guess I'm not wrapping things  
> properly.
> 
> This is a skeleton bit of code:
> 
> class ContentType(PortalContent):
> """A content type with access to an external database"""
> 
> def __init__(self, id):
>   self.id = id
> DA = getattr(self, 'MyDA', None)
>   #self.conn = DA() # not working at the moment because DA is None
> 
> Is it wrong to try and do this in my __init__ ? Regarding your other  
> suggestion: yes, I probably will factor this out into a utility once  
> I've worked out how to access the DA!!!

__init__ is indeed the wrong place: when the instance is created it is
not placed in an acquisition context yet.

Wichert.

-- 
Wichert Akkerman <[EMAIL PROTECTED]>It is simple to make things.
http://www.wiggy.net/   It is hard to make things simple.
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Re: [Zope-CMF] Accessing the "context"

2007-10-30 Thread Charlie Clark


Am 30.10.2007 um 17:04 schrieb Andrew Sawyers:


If it's in a content type's class, why not:
id = getattr(self, 'da_id', None)
Just using self as the context should be fine.
-- that of course presumes that the type is wrapped properly when  
you call that within your method.


mm, currently getting None back so I guess I'm not wrapping things  
properly.


This is a skeleton bit of code:

class ContentType(PortalContent):
"""A content type with access to an external database"""

def __init__(self, id):
self.id = id
DA = getattr(self, 'MyDA', None)
#self.conn = DA() # not working at the moment because DA is None

Is it wrong to try and do this in my __init__ ? Regarding your other  
suggestion: yes, I probably will factor this out into a utility once  
I've worked out how to access the DA!!!


Charlie

--
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Helmholtzstr. 20
Düsseldorf
D- 40215
Tel: +49-211-938-5360
GSM: +49-178-782-6226



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Re: [Zope-CMF] Accessing the "context"

2007-10-30 Thread Andrew Sawyers

Charlie Clark wrote:


Am 30.10.2007 um 16:53 schrieb Wichert Akkerman:


getattr(context, 'my_da_or_what_ever', None) works a bit better.


Doesn't that only work within a PythonScript? I need access from
within a content type, ie. real Python code?


It's called acquisition and it works everywhere. Try it.


Yes, but the context isn't available everywhere. How do I get hold of 
that?


Charlie
--
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Helmholtzstr. 20
Düsseldorf
D- 40215
Tel: +49-211-938-5360
GSM: +49-178-782-6226


If it's in a content type's class, why not:
id = getattr(self, 'da_id', None)
Just using self as the context should be fine.
-- that of course presumes that the type is wrapped properly when you 
call that within your method.


Andrew
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Re: [Zope-CMF] Accessing the "context"

2007-10-30 Thread Andrew Sawyers

Wichert Akkerman wrote:

da = getattr('my_da_or_what_ever', context, None)
  


getattr(context, 'my_da_or_what_ever', None) works a bit better.
  

Note that getattr('foo', context, None) is wrong.
Wichert has the correct syntax; I didn't even pay attention to the 
syntax originally. :)
  
Doesn't that only work within a PythonScript? I need access from  
within a content type, ie. real Python code?



It's called acquisition and it works everywhere. Try it.

Wichert.

  

Andrew
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Re: [Zope-CMF] Accessing the "context"

2007-10-30 Thread Charlie Clark


Am 30.10.2007 um 16:53 schrieb Wichert Akkerman:


getattr(context, 'my_da_or_what_ever', None) works a bit better.


Doesn't that only work within a PythonScript? I need access from
within a content type, ie. real Python code?


It's called acquisition and it works everywhere. Try it.


Yes, but the context isn't available everywhere. How do I get hold of  
that?


Charlie
--
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Helmholtzstr. 20
Düsseldorf
D- 40215
Tel: +49-211-938-5360
GSM: +49-178-782-6226



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Re: [Zope-CMF] Accessing the "context"

2007-10-30 Thread Andrew Sawyers

Wichert Akkerman wrote:

Previously Charlie Clark wrote:
  

Am 30.10.2007 um 16:19 schrieb robert rottermann:



da = getattr('my_da_or_what_ever', context, None)
  


getattr(context, 'my_da_or_what_ever', None) works a bit better.

  
Doesn't that only work within a PythonScript? I need access from  
within a content type, ie. real Python code?



It's called acquisition and it works everywhere. Try it.
  

It only works if the context is wrapped properly. :)

Wichert.

  

Andrew
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Re: [Zope-CMF] Accessing the "context"

2007-10-30 Thread Andrew Sawyers

Charlie Clark wrote:


Am 30.10.2007 um 16:19 schrieb robert rottermann:



da = getattr('my_da_or_what_ever', context, None)


Doesn't that only work within a PythonScript? I need access from 
within a content type, ie. real Python code?


That will work within your content class code as well.  That's probably 
your easiest route; I would probably abstract it into a 
tool/adapter/utility - all depending on what you're using in your stack 
(i.e. five).  I'm not up to speed on cmf 2 changes and the model in that 
stack.


Andrew

Charlie

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Re: [Zope-CMF] Accessing the "context"

2007-10-30 Thread Wichert Akkerman
Previously Charlie Clark wrote:
> 
> Am 30.10.2007 um 16:19 schrieb robert rottermann:
> 
> >
> >da = getattr('my_da_or_what_ever', context, None)

getattr(context, 'my_da_or_what_ever', None) works a bit better.

> Doesn't that only work within a PythonScript? I need access from  
> within a content type, ie. real Python code?

It's called acquisition and it works everywhere. Try it.

Wichert.

-- 
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http://www.wiggy.net/   It is hard to make things simple.
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Re: [Zope-CMF] Accessing the "context"

2007-10-30 Thread Charlie Clark


Am 30.10.2007 um 16:19 schrieb robert rottermann:



da = getattr('my_da_or_what_ever', context, None)


Doesn't that only work within a PythonScript? I need access from  
within a content type, ie. real Python code?


Charlie

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Helmholtzstr. 20
Düsseldorf
D- 40215
Tel: +49-211-938-5360
GSM: +49-178-782-6226



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Re: [Zope-CMF] Accessing the "context"

2007-10-30 Thread Charlie Clark


Am 30.10.2007 um 15:41 schrieb Andreas Jung:


Dear all,

a simple question with hopefully a simple answer! How do I access  
objects

from an object's context or hierarchy?


Acquisition? Traversal using restrictedTraverse()?


Yes, but I'm not sure which.

Say I have a DA, myDA, in my portal root and I have content type that  
needs to access this to store some attributes in an external  
database, how do I get hold of it?


import Aqcuisition

class MyContentType():
def set_connection(self):
self.connection = Acquisition.ac_aquire('myDA')

raises an AttributeError

I realise that this is probably down to me not getting Aqcuisition  
but this looks like how it should work going on the description of  
Aquisition.


Charlie
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Re: [Zope-CMF] Accessing the "context"

2007-10-30 Thread robert rottermann
Charlie Clark schrieb:
> Dear all,
> 
> a simple question with hopefully a simple answer! How do I access
> objects from an object's context or hierarchy? Specifically I'd like to
> be able to access a ZopeDA connection for a site. 

I
>
if you know the id of the object you are looking for beforehand you can
get it by just requesting it from the context like:

da = getattr('my_da_or_what_ever', context, None)
if da:
  ...

s it correct that I
> have to register this somewhere to be able to access it from a portal
> object?
>
no

hth
robert
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Re: [Zope-CMF] Accessing the "context"

2007-10-30 Thread Andreas Jung



--On 30. Oktober 2007 14:46:44 +0100 Charlie Clark <[EMAIL PROTECTED]> 
wrote:



Dear all,

a simple question with hopefully a simple answer! How do I access objects
from an object's context or hierarchy?


Acquisition? Traversal using restrictedTraverse()?

-aj

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[Zope-CMF] Accessing the "context"

2007-10-30 Thread Charlie Clark

Dear all,

a simple question with hopefully a simple answer! How do I access  
objects from an object's context or hierarchy? Specifically I'd like  
to be able to access a ZopeDA connection for a site. Is it correct  
that I have to register this somewhere to be able to access it from a  
portal object?


Charlie
--
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Helmholtzstr. 20
Düsseldorf
D- 40215
Tel: +49-211-938-5360
GSM: +49-178-782-6226



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[Zope-CMF] CMF Tests: 11 OK

2007-10-30 Thread CMF Tests Summarizer
Summary of messages to the cmf-tests list.
Period Mon Oct 29 13:00:00 2007 UTC to Tue Oct 30 13:00:00 2007 UTC.
There were 11 messages: 11 from CMF Unit Tests.


Tests passed OK
---

Subject: OK : CMF-1.5 Zope-2.7 Python-2.3.6 : Linux
From: CMF Unit Tests
Date: Mon Oct 29 22:20:40 EDT 2007
URL: http://mail.zope.org/pipermail/cmf-tests/2007-October/006799.html

Subject: OK : CMF-1.5 Zope-2.8 Python-2.3.6 : Linux
From: CMF Unit Tests
Date: Mon Oct 29 22:22:11 EDT 2007
URL: http://mail.zope.org/pipermail/cmf-tests/2007-October/006800.html

Subject: OK : CMF-1.5 Zope-2.9 Python-2.4.4 : Linux
From: CMF Unit Tests
Date: Mon Oct 29 22:23:41 EDT 2007
URL: http://mail.zope.org/pipermail/cmf-tests/2007-October/006801.html

Subject: OK : CMF-1.6 Zope-2.8 Python-2.3.6 : Linux
From: CMF Unit Tests
Date: Mon Oct 29 22:25:11 EDT 2007
URL: http://mail.zope.org/pipermail/cmf-tests/2007-October/006802.html

Subject: OK : CMF-1.6 Zope-2.9 Python-2.4.4 : Linux
From: CMF Unit Tests
Date: Mon Oct 29 22:26:41 EDT 2007
URL: http://mail.zope.org/pipermail/cmf-tests/2007-October/006803.html

Subject: OK : CMF-2.0 Zope-2.9 Python-2.4.4 : Linux
From: CMF Unit Tests
Date: Mon Oct 29 22:28:11 EDT 2007
URL: http://mail.zope.org/pipermail/cmf-tests/2007-October/006804.html

Subject: OK : CMF-2.0 Zope-2.10 Python-2.4.4 : Linux
From: CMF Unit Tests
Date: Mon Oct 29 22:29:41 EDT 2007
URL: http://mail.zope.org/pipermail/cmf-tests/2007-October/006805.html

Subject: OK : CMF-2.1 Zope-2.10 Python-2.4.4 : Linux
From: CMF Unit Tests
Date: Mon Oct 29 22:31:12 EDT 2007
URL: http://mail.zope.org/pipermail/cmf-tests/2007-October/006806.html

Subject: OK : CMF-2.1 Zope-trunk Python-2.4.4 : Linux
From: CMF Unit Tests
Date: Mon Oct 29 22:32:42 EDT 2007
URL: http://mail.zope.org/pipermail/cmf-tests/2007-October/006807.html

Subject: OK : CMF-trunk Zope-2.10 Python-2.4.4 : Linux
From: CMF Unit Tests
Date: Mon Oct 29 22:34:12 EDT 2007
URL: http://mail.zope.org/pipermail/cmf-tests/2007-October/006808.html

Subject: OK : CMF-trunk Zope-trunk Python-2.4.4 : Linux
From: CMF Unit Tests
Date: Mon Oct 29 22:35:42 EDT 2007
URL: http://mail.zope.org/pipermail/cmf-tests/2007-October/006809.html

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Re: [Zope-CMF] Move CMF collector to Launchpad (redux)

2007-10-30 Thread Wichert Akkerman
Previously Charlie Clark wrote:
> 
> Am 29.10.2007 um 21:17 schrieb Wichert Akkerman:
> 
> >>It seems that the Launchpad database is not separated by product. I
> >>was just checking the bugs fixed in the latest relase of Zope and
> >>#2339 refers to something completely different related to Ubuntu. I
> >>would have expected bugs from unrelated projects to kept separate.
> >
> >The fact that they are not is useful: it allows you to move a  
> >bugreport
> >from one product to another.
> 
> For any migration the loss of the bug id is pretty major. As for  
> related projects: yes, I can see the benefit of moving bugs between  
> say CMF, Zope 2 and Zope 3 but in this case it the bug I was looking  
> at was something to do with watchin DivX films using Xine on Ubuntu.  
> As this is completely unrelated, and something I am not interested in  
> the slightest, I would consider this to be a major drawback.

FWIW, I don't see that as a drawback. The old URL with the old bug
number will continue to work: it will redirect you to the new instance
of the bug report on launchpad.

Wichert.

-- 
Wichert Akkerman <[EMAIL PROTECTED]>It is simple to make things.
http://www.wiggy.net/   It is hard to make things simple.
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Re: [Zope-CMF] Move CMF collector to Launchpad (redux)

2007-10-30 Thread Charlie Clark


Am 29.10.2007 um 21:17 schrieb Wichert Akkerman:


It seems that the Launchpad database is not separated by product. I
was just checking the bugs fixed in the latest relase of Zope and
#2339 refers to something completely different related to Ubuntu. I
would have expected bugs from unrelated projects to kept separate.


The fact that they are not is useful: it allows you to move a  
bugreport

from one product to another.


For any migration the loss of the bug id is pretty major. As for  
related projects: yes, I can see the benefit of moving bugs between  
say CMF, Zope 2 and Zope 3 but in this case it the bug I was looking  
at was something to do with watchin DivX films using Xine on Ubuntu.  
As this is completely unrelated, and something I am not interested in  
the slightest, I would consider this to be a major drawback.


Charlie
--
Charlie Clark
Helmholtzstr. 20
Düsseldorf
D- 40215
Tel: +49-211-938-5360
GSM: +49-178-782-6226



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[Zope-CMF] ZCML import/export step registration

2007-10-30 Thread Wichert Akkerman
I completed implementation of zcml-based import and export step
registration on the wichert-zcml-steps branch. The syntax for import
steps is this:

 

  

and for export steps:
 
 
 
steps registered using zcml are stored in a new registry. I added some
utility methods to the setup tool that look in both this registry and
the in-tool registry so all the standard machinery and ZMI interfaces
see all steps.

Exporting only exports steps from the in-tool registries.

There are several advantages to managing steps in this method:

- if a product is removed its steps no longer stick in the system, which
  could lead to errors (it was breaking sites badly until we changed GS
  to ignore steps with invalid handlers) and adds a lot of unremoveable
  entries in its ZMI pages.

- even though steps are only loaded into the registry when a profile was
  selected the way we have managed the step registration in the user
  interface and API so far this has always been a silent and trivial to
  trigger action. This lead to confusing behaviour: steps would appear
  to be registered randomly depending on which profiles a user happened
  to have accessed. With zcml registration the behaviour is simple and
  predictable: if you install a product and load its zcml its
  functionality becomes available. Since import steps have always needed
  to check for presence of XML or marker files this is harmless.
  Exporting should always be a safe operation.

- If we deprecate profile-based registration and eventually remove it
  we can simplify a lot of code.

I intend to merge this branch into trunk next week.

Wichert.

-- 
Wichert Akkerman <[EMAIL PROTECTED]>It is simple to make things.
http://www.wiggy.net/   It is hard to make things simple.
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[Zope-CMF] CMF Collector: Open Issues

2007-10-30 Thread tseaver
The following supporters have open issues assigned to them in this collector
(http://www.zope.org/Collectors/CMF).

Assigned and Open


  tseaver

- "CMF needs View-based TypeInformation",
  [Accepted] http://www.zope.org/Collectors/CMF/437

- "CachingPolicyManager awareness of File and Image does not work",
  [Accepted] http://www.zope.org/Collectors/CMF/496


  yuppie

- "purge_old in runAllImportSteps not working",
  [Accepted] http://www.zope.org/Collectors/CMF/455


Pending / Deferred Issues

- "workflow notify success should be after reindex",
  [Deferred] http://www.zope.org/Collectors/CMF/389

- "Discussions broken",
  [Pending] http://www.zope.org/Collectors/CMF/493

- "components handler: export of placeless utilities is broken",
  [Pending] http://www.zope.org/Collectors/CMF/498

- "CatalogTool._listAllowedRolesAndUsers() returns wrong result ",
  [Pending] http://www.zope.org/Collectors/CMF/502

- "Spinning browser when running a snapshot",
  [Pending] http://www.zope.org/Collectors/CMF/503

- "GenericSetup import onto existing skins fails when adding new layers 
relative to old ones",
  [Pending] http://www.zope.org/Collectors/CMF/505

- "DirectoryView always registers subdirectories in development mode",
  [Pending] http://www.zope.org/Collectors/CMF/506


Pending / Deferred Features

- "CMFTopic Does Not Cache",
  [Deferred] http://www.zope.org/Collectors/CMF/295

- "iCal support for CMFCalendar",
  [Pending] http://www.zope.org/Collectors/CMF/487

- "components handler: support for sub-sites",
  [Pending] http://www.zope.org/Collectors/CMF/500

- "components handler: support removing items",
  [Pending] http://www.zope.org/Collectors/CMF/501

- "components handler: make 'interface' attribute optional",
  [Pending] http://www.zope.org/Collectors/CMF/499



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