NOT NULL constraint failed: dashboard_profile.user_id - python-3.x

Question

I'm trying to save the last IP of User to the Profile module in Django but I get always NOT NULL constraint failed I know that last_ip should be set tonull=True and I run this commands:py .\manage.py makemigrations and py .\manage.py migrate. if you have any suggestions to save IP to the user that will be helpful for me.
Thanks in advance.
#models.py
class Profile(models.Model):
user = models.OneToOneField(User, on_delete=models.CASCADE)
bio = models.TextField(blank=True, max_length=150)
last_ip = models.GenericIPAddressField(null=True, blank=True)
avatar = ContentTypeRestrictedFileField(max_upload_size=10485760, null=True, verbose_name="",default='default.jpg', blank= True, content_types=['image/png', 'image/jpeg'])
def __str__(self):
return self.user.username
#forms.py
class UpdateUserForm(forms.ModelForm):
username = forms.CharField(max_length=150, required=True)
first_name = forms.CharField(max_length=150, required=False)
last_name = forms.CharField(max_length=150, required=False)
email = forms.EmailField(required=True)
class Meta:
model = User
fields = ['username','first_name','last_name','email']
class UpdateAvatarBio(forms.ModelForm):
avatar = forms.ImageField()
bio = forms.CharField()
class Meta:
model = Profile
fields = ['avatar', 'last_ip', 'bio']
#views.py
def ip_client(request):
return (
x_forwarded_for.split(',')[0]
if (x_forwarded_for := request.META.get('HTTP_X_FORWARDED_FOR'))
else request.META.get('REMOTE_ADDR')
)
def profile(request):
ip = ip_client(request)
model = Profile(last_ip=ip)
model.save() # Traceback suppose here is the issue
if request.method == 'POST':
...
...
return render(request, 'profile.html', {'user_form': user_form, 'profile_form': profile_form})

Answer 1

You didn't add the user to Profile before saving it
def profile(request):
ip = ip_client(request)
model = Profile(last_ip=ip)
moddl.user=request.user #Add this
model.save() # Traceback suppose here is the issue
if request.method == 'POST':
...
...
return render(request, 'profile.html', {'user_form': user_form, 'profile_form': profile_form})
Edit:
Since the user is OneToOne (which means it is a the primary key), so Your code shall be like this
def profile(request):
ip = ip_client(request)
profile = Profile.objects.get(user=request.user)
profile.last_ip = ip
profile.save()
if request.method == 'POST':
...
...
return render(request, 'profile.html', {'user_form': user_form, 'profile_form': profile_form})