用模型保存django OneToOneField当前用户

Question

我花了好几个小时查看文档，并在这里以及我仍然无法找到我的问题的答案。如果你知道一个人直接告诉我。否则请看下面的问题。当我尝试将用户注册为开源民宿项目的主机时，我收到一个KeyError：https://github.com/castaway2000/OpenStay这还没有推送到主分支。我也试过setattr（）和实例。在这一点上，我只是没有点击。

models.py

class HostRegistration(models.Model): 
    user = models.OneToOneField(User, on_delete=models.CASCADE) 
    address = models.CharField(max_length=200) 
    city = models.CharField(max_length=100) 
    state = models.CharField(max_length=30) 
    zipcode = models.CharField(max_length=15) 
    country = models.CharField(max_length=30) 
    # Override the __unicode__() method to return out something meaningful! 
    def __unicode__(self): 
     return self.user 

forms.py

class HostForm(forms.ModelForm): 
    #no need for charfields here because we refrence the model with the fields 
    class Meta: 
     model = HostRegistration 
     fields = ['address', 'city', 'state', 'zipcode', 'country'] 

views.py - 这里的问题开始XD

# become a host 
def host_register(request): 
user = request.user 
if user.is_authenticated: 
    if request.method == 'POST': 
     host_form = HostForm(data=request.POST) 
     if host_form.is_valid(): 
      host_form.fields['user'].instance = user.id # this is where its failing. 
      host = host_form.save(commit=False) 
      print host 
      host.save() 
      return HttpResponseRedirect('/edit_userpage/') 
     else: 
      print host_form.errors 
else: 
    return HttpResponseRedirect('/') 
guide_form = HostForm() 
context = {'guide_form': guide_form} 
return render(request, 'users/host.html', context) 

请让我知道如何访问模型对象'用户'在我的意见，并保存当前登录的用户作为与模型的参考。这将是很大的帮助。

Answer 1

我找到了答案。

我改变了我的model.py到

class HostRegistration(models.Model): 
    # user is the changed variable 
    user = models.OneToOneField(settings.AUTH_USER_MODEL, on_delete=models.CASCADE) 
    address = models.CharField(max_length=200) 
    city = models.CharField(max_length=100) 
    state = models.CharField(max_length=30) 
    zipcode = models.CharField(max_length=15) 
    country = models.CharField(max_length=30) 
    # Override the __unicode__() method to return out something meaningful! 
    def __unicode__(self): 
     return self.user 

，我更新了我的views.py到：

def host_register(request): 
    user = request.user 
    if user.is_authenticated: 
     if request.method == 'POST': 
      host_form = HostForm(data=request.POST) 
      if host_form.is_valid(): 
       instance = host_form.save(commit=False) # this is the trick. 
       instance.user = request.user # and this to get the currently logged in user 
       instance.save() # to commit the new info 
       return HttpResponseRedirect('/edit_userpage/') 
      else: 
       print host_form.errors 
    else: 
     return HttpResponseRedirect('/') 
    guide_form = HostForm() 
    context = {'guide_form': guide_form} 
    return render(request, 'users/host.html', context) 

Answer 2

如果你做host_form.cleaned_data.get("user")而不是host_form.fields['user'].instance，它会工作吗？