我想在CreateView中保存实例之前填充GenericIPAddress字段。由于访问请求变量,必须在View not in Form Class中完成。我能这样做吗?我必须覆盖哪种方法以及如何?代码I使用:
models.py
class Message(models.Model):
author = models.CharField(max_length=60)
email = models.EmailField()
message = models.TextField(max_length=1200)
ip_address = models.GenericIPAddressField(null=True, blank=True)
timestamp = models.DateTimeField(auto_now_add=True)
is_read = models.BooleanField(default=False)
def __str__(self):
return self.author + '/' + self.message[:20]
forms.py
class MessageForm(forms.ModelForm):
class Meta:
model = Message
fields = ['author', 'email', 'message']
labels = {
'author': 'Autor',
'email': 'E-mail',
'message': 'Wiadomość'
}
views.py
class SendMessage(CreateView):
form_class = MessageForm
template_name = 'blog/send_message.html'
def post(self, request, *args, **kwargs):
result = super(SendMessage, self).post(request, *args, **kwargs)
ip, is_routable = get_client_ip(request)
if ip:
self.fields['ip_address'] = ip #I do it wrong
return result
答案 0 :(得分:2)
def form_valid(self,form):
super(SendMessage, self).form_valid(form)
ip, is_routable = get_client_ip(self.request)
if ip:
self.fields['ip_address'] = ip
return HttpResponseRedirect(self.get_success_url())
我使用您的代码作为参考,告诉您如何在form_valid中访问request
。
有关更多用法,请参阅本文here
答案 1 :(得分:0)
from django.db.models.signals import pre_save
from django.dispatch import receiver
from app.models import Message
@receiver(pre_save, sender=Message)
def some_signal(sender, **kwargs):
# populate GenericIPAddress Field