blechreiz-website/simpleforum/models.py

from django.db import models
from django.utils.translation import ugettext as _
from django.contrib.auth.models import User


class Message ( models.Model ):
    
    titel = models.CharField( max_length = 100, verbose_name = _("titel") )
    text  = models.TextField( blank=False, verbose_name = _("text") )
    
    creation_time = models.DateTimeField( verbose_name=_("creation_time") )
    
    author = models.ForeignKey( User, verbose_name=_("Author") )
    
    
    def __unicode__( self ):
        return self.author.username + " : " + self.titel

    

from django.db.models.signals import post_save
from django.dispatch import receiver

from django.core.mail import EmailMultiAlternatives

from musicians.models import Musician

from django.template.loader import get_template

from django.template import Context

@receiver(post_save, sender=Message)
def my_handler(sender, instance, created, **kwargs):
    if not created:
        return
    
    receivers = [  m.user.email  for m in Musician.objects.all()  ]

    subject    = "Blechreiz Forum: " + instance.titel
    from_email = 'forum@blechreiz.com'
    
    c = {  'messages': Message.objects.all().order_by('-creation_time')[:10] }
    
    text_template = get_template( "simpleforum/mail.txt"  )
    #html_template = get_template( "simpleforum/mail.html" )
    
    text_content = text_template.render( Context(c) )
    #html_content = html_template.render( Context(c) )
    
    msg = EmailMultiAlternatives( subject, text_content, from_email, receivers )
    #msg.attach_alternative( html_content, "text/html" )
    msg.send()