Question

我想扩展我的用户模型并在其他模型中添加字段

我希望它一次保存两个表单

每个表单都可以正常运行但是问题是当我把它们结合起来时我无法从用户模型中获取用户名

class Information(models.Model):
    Username = models.OneToOneField(User, on_delete=models.CASCADE)

我试过这个views.py

RegisterForm = self.form_class(request.POST)
InfoForm = self.second_form_class(request.POST)

if RegisterForm.is_valid() and InfoForm.is_valid():
    username = request.POST.get('username')
    password = request.POST.get('password')
    email = request.POST.get('email')
    first_name = request.POST.get('first_name')
    last_name = request.POST.get('last_name')

    User_obj = User(username=username, password=password, email=email, first_name=first_name,
                        last_name=last_name)
    user = User_obj.save()

    Username = username 
    PhoneNo = request.POST.get('PhoneNo')
    Address = request.POST.get('Address')
    Country = request.POST.get('Country')
    Info_obj = Information(Username=Username , PhoneNo=PhoneNo, Address=Address, Country=Country)
    Info_obj.save()

forms.py

class RegisterForm(forms.ModelForm):
    username = forms.CharField(max_length=40)
    password = forms.CharField(widget=forms.PasswordInput())

    class Meta:
        model = User
        fields = ["username","password", "email", "first_name", "last_name"]


class InfoForm(forms.ModelForm):
    Username = forms.CharField(max_length=40, required=False)

    class Meta:
        model = Information
        fields = ["Username","PhoneNo","Address","Country"]

我在这里想念一下吗？它可以保存给用户，但它不会保存到信息模型

我认为问题在于InfoForm上的用户名

Answer 1

问题在于InfoForm的用户名字段

而不是直接从RegisterForm中获取值

username = request.POST.get('username')

# with this code below Django demands that i need username instance from User model
Username = username

所以在保存RegisterForm之后，我使用objects.get（）方法从用户数据库中获取值

Username = User.objects.get(username=username)

解决方案

RegisterForm = self.form_class(request.POST)
InfoForm = self.second_form_class(request.POST)

if RegisterForm.is_valid() and InfoForm.is_valid():
    username = request.POST.get('username')
    password = request.POST.get('password')
    email = request.POST.get('email')
    first_name = request.POST.get('first_name')
    last_name = request.POST.get('last_name')

    User_obj = User(username=username, password=password, email=email, first_name=first_name,
                        last_name=last_name)
    User_obj.save()

    # i call the username from the User database after saving them
    Username = User.objects.get(username=username)
    PhoneNo = request.POST.get('PhoneNo')
    Address = request.POST.get('Address')
    Country = request.POST.get('Country')
    Info_obj = Information(Username=Username , PhoneNo=PhoneNo, Address=Address, Country=Country)
    Info_obj.save()

不知道我是否正确解释了

干杯

在firsttime save（）从User模型获取OneToOneField数据

1 个答案: