Question

所以我一直在尝试Django身份验证。我尝试创建一个寄存器视图，它实现了两个模型django.contrib.auth.models.User和一个与User共享OneToOne关系的自定义模型。

这是相关代码

models.py

from django.db import models
from django.utils import timezone
from django.contrib.auth.models import User
# Create your models here.

class UserProfile(models.Model):
    user = models.OneToOneField(User)
    SapID = models.IntegerField(default=60000000000)

    def __str__(self):
        return self.user.username

views.py

from django.shortcuts import render
from .forms import UserFormRegister, UserForm
# Create your views here.

def register(request):
    if request.method == 'POST':
        user_form = UserForm(data = request.POST)
        users_form = UserFormRegister(data = request.POST)
        if user_form.is_valid() and users_form.is_valid():
            user = user_form.save()
            user.set_password(user.password)
            user.save()
            userregister = users_form.save()
            userregister.user = user
            userregister.save()
            return redirect('/#/')
    else:
        user_form = UserForm()
        users_form = UserFormRegister()
    return render(request, 'register.html',{'user_form':user_form, 'users_form':users_form},)

forms.py

from django import forms
from django.contrib.auth.models import User
from .models import UserProfile

class UserForm(forms.ModelForm):
    password = forms.CharField(widget = forms.PasswordInput())

    class Meta:
        model = User
        fields=('username','password','email','first_name','last_name',)

class UserFormRegister(forms.ModelForm):
    class Meta:
        model = UserProfile
        fields = ('SapID', )

SapID是每个用户都拥有的唯一ID。

现在，当我尝试注册时，会创建用户对象，但用户配置文件对象不会。我得到一个错误说＆＃34; NOT NULL约束失败：foo_userprofile.user_id＆＃34;。我错过了什么？

Answer 1

问题是，当你执行users_form.save()时，它实际上尝试在对象上创建，并将其保存到约束引发异常的数据库中。为避免这种情况，您可以使用commit=False参数在内存中创建配置文件对象，但不会将其保存到数据库中。

userregister = users_form.save(commit=False)
userregister.user = user
userregister.save()

尝试创建寄存器视图时，NOT NULL约束失败错误

1 个答案: