This module provides a nifty interface between Django models (via the signal dispatcher) and D-Bus. This is handy when more than one process is interacting with the same database, to avoid polling for changes.
WARNING: This is just a toy (for now). Don't expect it to work.
To see what's going on, monitor the d-bus. I'm only interested in the signals being emitted by my example app here. Obviously, the interface and path names are configurable.
$ dbus-monitor | grep "interface=com.adammck."
In another shell, let's poke around with the database.
$ ./manage.py shell
Python 2.6.4 (r264:75706, Jan 25 2010, 08:55:26)
Type "help", "copyright", "credits" or "license" for more information.
(InteractiveConsole)
>>> from dbus_example.models import Person
>>> Person(name="Adam Mckaig").save()
Meanwhile, back in dbus-monitor...
signal
sender=:1.54 ->
dest=(null destination)
path=/com/adammck/dbus_example/Person
interface=com.adammck.dbus_example.Person
member=saved
int32 1
(The single parameter, 1, is the primary key of the saved object.
There's no particular reason not to include every field of the model;
I just haven't done that yet.)