Files
dss/spa/signals.py
2014-08-31 20:34:19 +01:00

132 lines
4.4 KiB
Python
Executable File

from django.contrib.sessions.models import Session
from django.core import signals
from django.core.exceptions import ObjectDoesNotExist
from django.db.models.signals import post_save, pre_save, m2m_changed
from django.dispatch import Signal, receiver
from django.contrib.auth.models import User
from core.utils.audio.mp3 import mp3_length
from core.utils.url import wrap_full
from spa.models import Notification
from spa.models.activity import ActivityFollow
from spa.models.userprofile import UserProfile
from spa.models.mix import Mix
waveform_generated_signal = Signal()
def _waveform_generated_callback(sender, **kwargs):
print "Updating model with waveform"
try:
uid = kwargs['uid']
if uid is not None:
mix = Mix.objects.get(uid=uid)
if mix is not None:
mix.waveform_generated = True
mix.duration = mp3_length(mix.get_absolute_path())
mix.save(update_fields=["waveform_generated", "duration"])
except ObjectDoesNotExist:
print "Mix has still not been uploaded"
pass
waveform_generated_signal.connect(_waveform_generated_callback)
update_user_geoip_signal = Signal()
def _update_user_geoip_callback(sender, **kwargs):
try:
user = UserProfile.objects.get(pk=kwargs['profile_id'])
user.city = kwargs['city']
user.country = kwargs['country']
user.save()
except ObjectDoesNotExist:
pass
update_user_geoip_signal.connect(_update_user_geoip_callback)
def create_profile(sender, **kw):
user = kw["instance"]
if kw["created"]:
up = UserProfile(user=user)
up.save()
post_save.connect(create_profile, sender=User)
def post_save_handler(**kwargs):
"""
Doing signals for notifications here.
I like this method because I have a single signal
and just check for a hook method on the sender
"""
instance = kwargs['instance']
# should save generate a notification to a target user
if hasattr(instance, 'post_social'):
instance.post_social()
if hasattr(instance, 'create_notification'):
instance.create_notification()
#should save post to the activity feed
if hasattr(instance, 'create_activity'):
instance.create_activity()
#try to get the user's geo profile
if hasattr(instance, 'update_geo_info'):
instance.update_geo_info()
post_save.connect(post_save_handler)
"""
Setting up a post save handler for sessions here
So that I can store the session id against the user
"""
@receiver(pre_save, sender=Session, dispatch_uid='session_pre_save')
def session_pre_save(sender, **kwargs):
s = kwargs['instance']
if s is not None:
uid = s.get_decoded().get('_auth_user_id')
if uid is not None:
try:
user = User.objects.get(pk=uid)
p = user.get_profile()
p.last_known_session = s.session_key
p.save()
except ObjectDoesNotExist:
pass
@receiver(m2m_changed, sender=UserProfile.following.through, dispatch_uid='user_followers_changed')
def user_followers_changed(sender, **kwargs):
try:
if kwargs['action'] == 'post_add':
source_user = kwargs['instance']
if source_user:
for i in kwargs['pk_set']:
target_user = UserProfile.objects.get(pk=i)
if target_user:
ActivityFollow(user=source_user, to_user=target_user).save()
notification = Notification()
notification.from_user = source_user
notification.to_user = target_user
notification.notification_text = "You have a new follower on Deep South Sounds"
notification.notification_html = "<a href='%s'>%s</a> followed you on <a href='http://deepsouthsounds.com'>Deep South Sounds</a>" % (
wrap_full(source_user.get_profile_url()),
source_user.get_nice_name()
)
notification.notification_url = source_user.get_absolute_url()
notification.verb = "followed"
notification.target = target_user.get_nice_name()
notification.save()
except Exception, ex:
print "Error sending new follower: %s" % ex.message