我是Django的新手,也许我的问题有一个简单的答案,但我处于僵局。我的信号代码生活在signals.py
中,我使用@receiver
。根据文档,我在apps.py
中的Ready()内导入了信号子模块。但是它不起作用=(有人可以帮助我吗?
n.b。如果我在models.py
中写下信号代码,则一切正常。
代码: signal.py
from django.db.models.signals import post_delete
from django.dispatch import receiver
import os
from .models import ProductImage
def delete_image_from_storage(path):
if os.path.isfile(path):
print(path)
os.remove(path)
@receiver(post_delete, sender=ProductImage)
def post_delete_image(sender, instance, **kawargs):
if instance.photo:
print(instance.photo.path)
delete_image_from_storage(instance.photo.path)
apps.py
from django.apps import AppConfig
class ProductsConfig(AppConfig):
name = 'products'
def ready():
import products.signals
settings.py
INSTALLED_APPS = [
...,
'products',
...,
]
如《终结》中所述,您需要在INSTALLED_APPS
IE中明确注册AppConfig:
INSTALLED_APPS = [
...,
'products.apps.ProductConfig',
...,
]
或将其声明为products/__init__.py
中的default_app_config
:
# products/__init__.py
default_app_config = "products.apps.ProductConfig"