[Zope3-dev] Re: Add flexibility to zope.formlib.form.EditFormBase

2007-05-07 Thread Christian Zagrodnick

On 2007-05-05 20:07:07 +0200, Marius Gedminas [EMAIL PROTECTED] said:



On Fri, May 04, 2007 at 09:26:17AM +0200, Michael Howitz wrote:

I'm using zope.formlib.form.EditFormBase and want to normalize data =20
before saving it.
Saving is done by the applyChanges function which is called from =20
handle_edit_action.
The problem is that handle_edit_action is an action, so I can't =20
easily subclass and do a super call to handle_edit_action.


You can, but there's a trick to it---call handle_edit_action.success()
instead of calling handle_edit_action directly.


Right. I used something like this here in a custom form:


   @zope.formlib.form.action(
   _(Apply),
   condition=zope.formlib.form.haveInputWidgets)
   def handle_edit_action(self, action, data):
   super(EditForm, self).handle_edit_action.success(data)
   self.request.response.redirect(self.nextURL())
   return Redirect...


--
Christian Zagrodnick

gocept gmbh  co. kg  ·  forsterstrasse 29 · 06112 halle/saale
www.gocept.com · fon. +49 345 12298894 · fax. +49 345 12298891



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[Zope3-dev] Re: tracking satellite project's trunks

2007-05-07 Thread Martijn Faassen

Jim Fulton wrote:


On May 4, 2007, at 6:25 AM, Baiju M wrote:
...

We will be using same Zope 3 resources for bug tracking, mailing list
and wiki for these satellite project's, is it ?


Thanks a very good question.  I don't think we need more mailing lists.  
In fact, I think zope3-dev and zope-dev should be merged.


I suspect that these projects will eventually get their own projects in 
launchpad, but I'm not sure.  I'm also not sure about wikis.  I don't 
think we need to do anything about this any time soon.


It sounds like we're in the distribution business, and have problems 
similar to a Linux distribution.


Since Ubuntu's requirements are in a large part driving Launchpad 
development, we should examine what Ubuntu is doing.


I got the impression one of Launchpad's underlying goals it to make it 
easier for upstream (the package developers) and downstream (the 
distribution developers) to collaborate on critical information such as 
bugs. I don't know what the concrete status of this is for Launchpad 
however. I think we should be asking Steve. :)


Regards,

Martijn

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[Zope3-dev] Re: tracking satellite project's trunks

2007-05-07 Thread Martijn Faassen

Benji York wrote:

Christian Theune wrote:

Same here. I'm feeling like I'm not yet understanding what the trunk
will be used like.


I'm wondering if we need to maintain a Zope 3 project with any code in 
it at all (or nearly so).  Could Zope 3 just be a buildout with a 
configuration that creates a Zope 3 application with a bunch of stock 
components.


Christian said we should wax philosophical and since this one of my 
favorite activities I will belatedly do this. :)


It is instructive to look at TurboGears. They were the pioneers of 
egg-based distribution and used cool words like 'megaframework' to 
market the concept of various libraries being integrated into one 
framework. Django in contrast spreads memes like yeah, megaframeworks 
are nice, but we're INTEGRATED. So we could market Zope 3 as the 
integrated mega-framework. :)


TurboGears is different from Zope 3 in that most of its component parts 
are libraries developed by independent communities. This is less the 
case for Zope 3, though some of its constituent parts are similar (ZODB 
for instance). As time progresses we might eventually see more smaller 
communities form around smaller parts, but we'll see. If I read Jim 
right, we should be careful about splitting up the community 
prematurely, so let's all keep it on this list for the time being. :)


TurboGears is also different from Zope 3 in that there is an actual 
turbogears package out there. This contains the code that glues the 
libraries together into a more coherent experience. With Zope 3 the 
responsibility for a coherent experience is diffused over numerous 
packages, though one can argue that zope.component and zope.interface 
play the most important roles here.


It's interesting to consider Grok in this light too. Grok tries to 
encapsulate various patterns of Zope 3 and offer them in a more 
convenient to use form. In this, it might be somewhat similar to the 
role the turbogears core package plays, but of course only to people who 
actually use Grok. :)


Regards,

Martijn

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Re: [Zope3-dev] zope.app.twisted.main and zope multiservice

2007-05-07 Thread David Pratt
Hi. I know there must be a few folks that would like to easily add other 
clients or servers to zope (at or after bootstrapping) and have control 
over the services with the running reactor :-)  A simple api for 
accessing the multiservice after bootstrapping would make zope more 
accessible to twisted development.


Has anyone got any ideas on incorporating this. I have made a suggestion 
but hoping for input and other ideas to make this happen.


The ZopeService class subclasses service.Multiservice. The Multiservice 
itself provides methods from twisted for adding, disowning, starting or 
stopping services or iterating over the services in the multiservice. I 
am hoping we can can come up with a good way to make this object 
accessible within zope. Many thanks.


Regards,
David


David Pratt wrote:
I am wondering if as part of bootstrapping zope, that a utility could 
not be set up in the site manager that could hang on the zope 
multiservice object. Methods available for the utility could allow you 
access to this after booting zope. Is this reasonable? Many thanks.


Regards,
David


David Pratt wrote:
Hi Martijn. Many thanks for your reply. I was not aware of your 
project so it is quite nice to see. I am hoping to try it out. :-)


At zope's startup, a multiservice is started that currently adds the 
servers setup in the zope.conf. I have created configuration for 
additional clients and servers to use the existing thread pool and 
currently adding them to the multiservice using a modified main.py By 
having access to the multiservice object, you have complete control of 
each service in the app as well as the ability to incorporate other 
services to an already running reactor. Interaction within the app 
using multiple reactors is not safe - so access to this object allows 
you to add, remove, start or stop services.


I also want the configuration to be explicit - so to using zconfig and 
recipes. Overall, I am integrating apps into buildouts as well. It is 
useful to be explicit here too since your configuration will otherwise 
be in a single egg somewhere. This could make it awkward to run 
multiple servers performing the same task on a machine, which is the 
pattern I am working with.


Regards,
David



Martijn Pieters wrote:

On 5/3/07, David Pratt [EMAIL PROTECTED] wrote:

Hi. I'm really wanting to do more with twisted in zope. One thing that
would make this much easier is to have a means of getting hold of the
twisted multiservice following startup as opposed to using a different
main.py (as I have been) to allow the other services to be added,
started or stopped at, or any time following startup.


I am not sure what you are looking for, but I have no trouble starting
additional services after Zope startup. See my Wing IDE integration
for Zope3, for example;

 http://trac.zopatista.com/zopatista/browser/z3wingdbg/trunk/

It starts additional services, such as a single-threaded HTTP debug
server on a separate port, either at Zope start or later as the user
requests.


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