def handle(self, msg):
match = self.FOLLOW_RE.match(msg.text)
if match is not None:
# fetch a list of objects (any model) that
# match the query via the __search__ api
to_follow = find_objects(
followable_models(),
match.group(1))
# link this reporter to the "followers" reverse foreign key
# of each object (whatever model it is -- they're all named
# "followers"). this works with unidentified connections too,
# even if that doesn't make much sense most of the time
for obj in to_follow:
obj.followers.get_or_create(**msg.persistance_dict)
if to_follow:
msg.respond(
u"You are now following: %s" %
(", ".join(map(unicode, to_follow))))
# if we didn't understand _any_ of what the
# caller asked us to follow, return an error
else:
msg.respond(u"Sorry, I couldn't understand what you want to follow")
return True
# is this an unfollow request?
pass
# is this a "who am i following?" request?
pass
#!/usr/bin/env python
# vim: ai ts=4 sts=4 et sw=4
from django.db import models
from reporters.models import Reporter, PersistantConnection
from utils import followable_models
for model in followable_models():
m_name = "Following%s" % model.__name__
# believe it or not, this is how django generates the field names for
# many-to-one (reverse foreign key) relationships. so i'm doing the same.
# see: django.db.models.fields.related.RelatedField.contribute_to_class
f_name = "following_%s" % model.__name__.lower()
r_name = "%s_set" % f_name
# dynamically build a django model in this scope, and link
# it back to the target via the __follow_model__ attribute,
# so it can be found later on via the original model
vars()[m_name] = model.__follow_model__ = type(m_name, (models.Model,), {
f_name: models.ForeignKey(model, related_name="followers"),
# allow reporters OR connections to follow other objects. this doesn't
# make much sense, but is allowed for the sake of completeness. it can
# always be disallowed in app.py
"reporter": models.ForeignKey(Reporter, null=True, related_name=r_name),
"connection": models.ForeignKey(PersistantConnection, null=True, related_name=r_name),
# replace the verbose name, to shorten the