From Django documentation https://docs.djangoproject.com/en/1.6/topics/signals/#connecting-receiver-functions
You can put signal handling and registration code anywhere you like. However, you'll need to make sure that the module it's in gets imported early on so that the signal handling gets registered before any signals need to be sent. This makes your app's models.py a good place to put registration of signal handlers.
I think you have to put your connection code in models.py (your `create_stream_item` function can still live in signals.py) in order to be sure connections are made early enough.
2013/11/28 Aamu Padi <aamupadi@gmail.com>
I am trying to create a project for creating feeds/activity feeds of a user with the help of a blog.--
These are the models -
class StreamItem(models.Model):
user = models.ForeignKey(User)
content_type = models.ForeignKey(ContentType)
object_id = models.PositiveIntegerField()
pub_date = models.DateTimeField(default=datetime.now)
content_object = generic.GenericForeignKey('content_type', 'object_id')
@property
def content_class(self):
return self.content_type.model
class Blog(models.Model):
user = models.ForeignKey(User)
title = models.CharField(max_length=300)
body = models.TextField()
pub_date = models.DateTimeField(default=datetime.now)
class Photo(models.Model):
user = models.ForeignKey(User)
title = models.CharField(max_length=200)
image = models.ImageField(upload_to=get_upload_file_name)
pub_date = models.DateTimeField(default=datetime.now)
And this is the signals.py:
from django.db.models import signals
from django.contrib.contenttypes.models import ContentType
from django.dispatch import dispatcher
from blogs.models import Blog
from picture.models import Photo
from models import StreamItem
def create_stream_item(sender, instance, signal, *args, **kwargs):
# Check to see if the object was just created for the first time
if 'created' in kwargs:
if kwargs['created']:
create = True
# Get the instance's content type
ctype = ContentType.object.get_for_model(instance)
if create:
si = StreamItem.objects.get_or_create(content_type=ctype, object_id=instance.id, pub_date = instance.pub_date)
# Send a signal on post_save for each of these models
for modelname in [Blog, Photo]:
dispatcher.connect(create_stream_item, signal=signals.post_save, sender=modelname)
When I create a blog or upload a photo, the `signal` does not work. But I can manually add items to the `StreamItem` app using the admin, and the StreamItem does work as I want it to be. I think there's problem with the signals.py. Please help me out. Would be much appreciate. Thank you.
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