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django - NOT NULL 约束失败：users_details.user_id

问题描述

我试图在我的注册表单页面上添加另一个包含地址和出生日期的详细信息表单。每次我尝试注册时，都会收到 NOT NULL 约束失败错误。

模型.py

class Details(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    address = models.CharField(max_length=60, blank=True)
    birth_date = models.DateField(null=True, blank=True)

视图.py

def register(request):
    if request.method == 'POST':
        r_form = UserRegisterForm(request.POST)
        o_form = DetailsForm(request.POST)
        if r_form.is_valid and o_form.is_valid():
            r_form.save()
            o_form.save()
            username = r_form.cleaned_data.get('username')
            messages.success(request, f'Your account has been created!')
            return redirect('login')
    else:
        r_form = UserRegisterForm()
        o_form = DetailsForm()

    context = {
        'r_form' : r_form,
        'o_form' : o_form
    }
    return render(request, 'users/register.html', context)

表格.py

class UserRegisterForm(UserCreationForm):
    email = forms.EmailField()

    class Meta:
        model = User
        fields = ['username', 'email','password1', 'password2']

class DetailsForm(forms.ModelForm):
    address = forms.CharField()
    birth_date = forms.DateField()
    class Meta:
        model = Details
        fields = ['address', 'birth_date']

错误

标签： djangonullconstraints

解决方案

虽然自从可插入用户模型出现以来，无关的细节/配置文件“sidecar”模型并不是最佳实践，但这个特殊问题是由于两个模型没有关联造成的。

尝试

if r_form.is_valid and o_form.is_valid():
    user = r_form.save()
    o_form.instance.user = user
    o_form.save()

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