我正嘗試創建一個項目,以便在blog的幫助下創建用戶的提要/活動源。django信號無法按預期工作
這些模型 -
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)
這是signals.py:
__init__.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(user=instance.user, 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)
當我創建一個博客或上傳照片時,signal
不起作用。我也沒有得到任何錯誤。但我可以使用管理員手動將項目添加到StreamItem
應用程序,並且StreamItem的確按照我的需要工作。我認爲signals.py有問題。請幫助我。將不勝感激。謝謝。
你好。我在signals.py中添加了__init __。py。但即使現在它不起作用。無論如何檢查錯誤? – Aamu
順便說一句,我必須將'import signals'放入'__init __。py'文件。或者把'__init __。py'放在'signals.py'文件中? – Aamu
@Aamu在應用程序模塊中,您將擁有'__init __。py',它們在加載django時肯定會加載。所以,放入'輸入信號線'在那 – Surya