Django使用自定义信号发送邮件

Question

在我的示例中，信号功能是在models.py中创建的。相反，我认为可以使用自定义信号概念。

我的信号功能models.py是

class Book(models.Model): 
    [..........] 

def send_update(sender, instance, created, **kwargs): 
    if instance.author_name: 
     message = "Book is updated" 
     subject = "Updates" 
     send_mail(subject, message, your_email, 
      [instance.email,]) 

post_save.connect(send_update, sender=Book) 

views.py是

if request.POST: 
     form = BookForm(request.POST) 

     if form.is_valid(): 
      cd = form.cleaned_data 
      form.save() 
      return redirect('/index/') 
    return render_to_response('addbook.html',{ 'form':form },context_instance=RequestContext(request)) 

这不是我们如何创建一个使用signals.py文件发送邮件的自定义信号。

我想在实践中学习这个，一个例子会帮助我做到这一点。

感谢

Answer 1

signals.py

from django.db.models.signals import post_save 
from app.models import Book 

def send_update(sender, instance, created, **kwargs): 
    if instance.author_name: 
     message = "Book is updated" 
     subject = "Updates" 
     send_mail(subject, message, your_email, 
      [instance.email,]) 

post_save.connect(send_update, sender=Book) 

通过在应用程序的__init__.py文件中导入信号来注册信号。这将允许从signals.pyimport models。

__init__.py

import signals 

Answer 2

定义你的信号和接收器在signals.py：

from django.dispatch import Signal 

post_update = Signal(providing_args = ['instance']) 

def send_update(...): 
    .... 

post_update.connect(send_update, sender = Book) 

在views.py，送你保存表单之后的信号：

instance = form.save() 
post_update.send(sender = Book, instance = instance)