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问题描述
我有一个非常简单的模型:
I have a pretty simple model that works:
class Badge(models.Model):
name = models.CharField(max_length=16, help_text="Name for Badge")
category = models.ForeignKey(BadgeCategory, help_text="Category for badge")
description = models.CharField(max_length=32, help_text="A brief description")
file = models.ImageField(upload_to=format_badge_name)
signals.post_save.connect(create_badge, sender=Badge)
我知道我在signals.py 中的create_badge 函数有效.如果我在没有发送者值的情况下发送它,它会说发送者是一个 LogEntry 对象.我想/需要在 post_save 脚本中引用一些实例信息,如下所示:
I know my create_badge function in signals.py works. If I send it without a value for sender, it says the sender is a LogEntry object. I want/need to reference some of the instance information in the post_save script like below:
def create_badge(sender, instance, created, **kwargs):
from userinfuser.ui_api import UserInfuser
from django.conf import settings
if created:
api_key = settings.API_KEY
api_email = settings.API_EMAIL
ui = UserInfuser(api_email, api_key)
ui.create_badge(instance.category.name, instance.name, instance.description, instance.file.url)
我在哪里可以调用我的 post_save 调用,以便它知道徽章(我假设这是修复?
Where can I call my post_save call so it's aware of Badge (I'm assuming this is the fix?
谢谢.
推荐答案
只用sender=Badge连接信号后Badge定义,测试示例:
Just connect the signal with sender=Badge after Badge is defined, tested example:
from django.db import models
from django.db.models import signals
def create_badge(sender, instance, created, **kwargs):
print "Post save emited for", instance
class BadgeCategory(models.Model):
name = models.CharField(max_length=100)
class Badge(models.Model):
name = models.CharField(max_length=16, help_text="Name for Badge")
category = models.ForeignKey(BadgeCategory, help_text="Category for badge")
description = models.CharField(max_length=32, help_text="A brief description")
signals.post_save.connect(create_badge, sender=Badge)
测试外壳会话:
In [1]: category = BadgeCategory(name='foo')
In [2]: category.save()
In [3]: badge = Badge(category=category, name='bar', description='test badge')
In [4]: badge.save()
Post save emited for Badge object
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