NOT NULL约束失败:user_profile.user_id [英] NOT NULL constraint failed: user_profile.user_id
问题描述
我尝试使用Profile Model制作Sign Up表单,然后在模型中进行一些更改。
I'm try to make Sign Up form With Profile Model and I will make some changes in the model.
所有表都是在运行<$ c时创建的$ c> manage.py makemigrations ,但是当我要运行manage.py migration时,显示此错误:
All tables are created when I run manage.py makemigrations
but when I want to run manage.py migrate then is show this error:
django.db.utils.IntegrityError:NOT NULL约束失败:
user_profile.user_id
django.db.utils.IntegrityError: NOT NULL constraint failed: user_profile.user_id
模型。 py
class Profile(models.Model):
user = models.OneToOneField(User,default="", on_delete=models.CASCADE)
bio = models.TextField(max_length=500, blank=True)
location = models.CharField(max_length=30, blank=True)
birth_date = models.DateField(null=True, blank=True)
@receiver(post_save, sender=User)
def update_user_profile(sender, instance, created, **kwargs):
if created:
Profile.objects.create(user=instance)
instance.profile.save()
Views.py :
def signup(request):
if request.method == 'POST':
form = SignUpForm(request.POST)
if form.is_valid():
user.refresh_from_db()
user.profile.birth_date = form.cleaned_data.get('birth_date')
raw_password = form.cleaned_data.get('password1')
user.save()
user = authenticate(username=user.username, password=raw_password)
login(request, user)
return redirect('home')
else:
form = SignUpForm()
return render(request, 'signup.html', {'form': form})
form.py :
class SignUpForm(UserCreationForm):
birth_date = forms.DateField(help_text='Required. Format: YYYY-MM-DD')
class Meta:
model = User
fields = ('username', 'birth_date', 'password1', 'password2', )
推荐答案
您不能具有默认值=
在外键中,因为它不是用户ID,也不将外键设置为可空的。这就是为什么外键约束失败的原因。
You cannot have default=""
in foreign key as it is not User id, also foreign keys is not set to be NULL-able. This is why foreign key constraint fails.
user = models.OneToOneField(User, default=None, null=True, on_delete=models.CASCADE)
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