does python support mvc architecture

[ketulp_baroda@yahoo.com]

Hi
Does python support MVC architecture? Java has register & notify
obsever methods in javax.util . Does python has these functions. If
not then how to register the views with the models & how to notify the
views that the model has been updated??

[John Roth]

Re: does python support mvc architecture

<ketulp_baroda@ yahoo.com> wrote in message
news:f046efac.0 402120627.948b7 ed@posting.goog le.com...[color=blue]
> Hi
> Does python support MVC architecture? Java has register & notify
> obsever methods in javax.util . Does python has these functions. If
> not then how to register the views with the models & how to notify the
> views that the model has been updated??[/color]

I don't know of a notifier class in the standard library,
but it's not all that difficult to write one. This is the
one I am currently using:

-----------------------------------------------------
# module Notify

class Notify(object):
def __init__(self):
self.listenerLi st = []

def sendMessage(sel f, event):
for callback in self.listenerLi st:
callback(event)
return

def addListener(sel f, callback):
self.listenerLi st.append(callb ack)

def removeListener( self, callback):
self.listenerLi st.remove(callb ack)
-----------------------------------------------------

callback has to be a callable of some kind,
a bound method is perfectly acceptable and
that's what I use. Works great.

John Roth

[Thomas Heller]

Re: does python support mvc architecture

"John Roth" <newsgroups@jhr othjr.com> writes:
[color=blue]
> <ketulp_baroda@ yahoo.com> wrote in message
> news:f046efac.0 402120627.948b7 ed@posting.goog le.com...[color=green]
>> Hi
>> Does python support MVC architecture? Java has register & notify
>> obsever methods in javax.util . Does python has these functions. If
>> not then how to register the views with the models & how to notify the
>> views that the model has been updated??[/color]
>
> I don't know of a notifier class in the standard library,
> but it's not all that difficult to write one. This is the
> one I am currently using:
>
> -----------------------------------------------------
> # module Notify
>
> class Notify(object):
> def __init__(self):
> self.listenerLi st = []
>
> def sendMessage(sel f, event):
> for callback in self.listenerLi st:
> callback(event)
> return
>
> def addListener(sel f, callback):
> self.listenerLi st.append(callb ack)
>
> def removeListener( self, callback):
> self.listenerLi st.remove(callb ack)
> -----------------------------------------------------
>
> callback has to be a callable of some kind,
> a bound method is perfectly acceptable and
> that's what I use. Works great.[/color]

I can heartily recommend the dispatcher module from Patrick O'Brian.
I'm still using a hacked up version from ActiveState's Python cookbook,
but there's also a newer version on sourceforge.

Thomas

[DH]

Re: does python support mvc architecture

[color=blue]
>Does python support MVC architecture? Java has register & notify
>obsever methods in javax.util . Does python has these functions. If
>not then how to register the views with the models & how to notify the
>views that the model has been updated??[/color]

The one that is closest to Java's implementation is here:

http://jamesthornton.com/eckel/TIPython/code/util/

but see also:

http://sra.itc.it/people/cavada/mvc/index.html

http://sourceforge.net/projects/pydispatcher/

And various python frameworks have Observable support built-in, such as
Twisted, anygui, WCK, etc.

[Yermat]

Re: does python support mvc architecture

DH a écrit :[color=blue]
>[color=green]
>> Does python support MVC architecture? Java has register & notify
>> obsever methods in javax.util . Does python has these functions. If
>> not then how to register the views with the models & how to notify the
>> views that the model has been updated??[/color]
>
>
> The one that is closest to Java's implementation is here:
> http://jamesthornton.com/eckel/TIPython/code/util/
> but see also:
> http://sra.itc.it/people/cavada/mvc/index.html
> http://sourceforge.net/projects/pydispatcher/
>
> And various python frameworks have Observable support built-in, such as
> Twisted, anygui, WCK, etc.[/color]

http://www.python.org/cgi-bin/moinmoin/DelegationEventModel