Question

我收到以下错误：UNIQUE constraint failed: user_profile_credit.customer_id

我尝试将当前用户的ID分配给模型

models.py

class Credit(models.Model):
    WALLET=(
        ('1','first choice'),
        ('2','second choice')
    )
    customer=models.OneToOneField(User)
    wallet=models.CharField(max_length=2, choices= WALLET)

和我的form.py

class CreditForm(forms.ModelForm):
    class Meta:
        model=Credit
        fields=['wallet']
        widgets = {
            'wallet': forms.RadioSelect(),
        }

最后我的views.py：

def CreditView(request):
    if request.method == "POST":
        form = CreditForm(request.POST)
        if form.is_valid():
            post = form.save(commit=False)
            post.customer=request.user    #:((
            post.save()
        return redirect('user_profile:index')
    else:
        form = CreditForm()
        return render(request, 'user_profile/credit.html', {'form': form})

我甚至改变了：

post.customer=request.user

为：

post.customer=User.objects.filter(id= request.user.id)[0]

和

currentuser=request.user
post.customer=currentuser.id

但我收到错误Cannot assign "5": "Credit.customer" must be a "User" instance.

Answer 1

使用：

form = CreditForm(request.POST, instance=request.user.credit)

（这假设您已经为此用户创建了一个信用实例。详细了解OneToOneFields here）。

使用request.user分配外键但我得到错误django

1 个答案: