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我想在django上爲我的網站製作私人消息應用。期望的字符串或緩衝區：私人消息應用
Models.py：
class Message(models.Model):
sender = models.ForeignKey(User, related_name='sender')
recipient = models.ForeignKey(User, related_name='recipient')
sent_date = models.DateTimeField(blank=True, null=True)
title = models.CharField(max_length=70, default='Без теми', blank=True, null=True)
body = models.TextField(max_length=10000)
def __str__(self):
return self.title
class Meta:
verbose_name = 'повідомлення'
verbose_name_plural = 'Повідомлення'
Views.py：
@login_required
def write(request):
context = {}
context.update(csrf(request))
context['form'] = WriteMessage()
if request.POST:
write_form = WriteMessage(request.POST)
if write_form.is_valid():
cd = write_form.cleaned_data
if User.objects.filter(username=cd['recipient']).exists():
message = Message(sender = request.user, recipient=User.objects.get(username = cd['recipient']), title=cd['title'], body=cd['body'], sent_date=datetime.now)
message.save()
return redirect('/inbox/')
else:
context['errors'] = ["Not found user with this username"]
return render(request, 'send_message.html', context)
else:
return render(request, 'send_message.html', context)
，當我嘗試發送郵件，我得到的錯誤：expected string or buffer。但是，當我從管理頁面發送消息時 - 它的工作非常棒。
我必須做什麼？請幫幫我。謝謝。