问题
I'm trying to store the First name and last name straight from the Facebook API to a User Auth model (which is extended with FacebookProfile model, containing webpull, id and year_formed)
Models.py
class FacebookProfile(models.Model):
user = models.OneToOneField(User, on_delete = models.CASCADE)
id = models.PositiveIntegerField(primary_key = True)
#name = models.CharField(max_length = 200, null = True)
year_formed = models.PositiveIntegerField(default = 0)
webpull= models.CharField(max_length =1000, null = True)
Views.py
if request.method == 'GET':
print 'im here'
return render(request, "logV2.html")
if request.method == "POST":
first_name = request.POST.get('first_name')
last_name = request.POST.get('last_name')
print first_name, last_name
facebook_user = FacebookUserForm(data=request.POST)
facebook_profile = FacebookProfileForm()
has_account = authenticate(first_name = first_name, last_name = last_name)
if has_account:
print 'this has account'
login(request, has_account)
return HttpResponseRedirect('/music/home/')
else:
id_ = request.POST.get('id')
birthday = request.POST.get('year_formed')
webpull = request.POST.get('webpull')
if birthday == "undefined":
print 'im emplty'
year_formed = random.randint(1993,1998)
else:
year_formed = re.findall(r"[0-9][0-9][0-9][0-9]$", birthday)[0]
print id_, year_formed, webpull
print facebook_user
user = facebook_user.save()
profile = facebook_profile.save(commit = False)
profile.user = user
profile.webpull = webpull
profile.id = id_
## steal birtday fucntion from log
# move to new database facebook (neeed to change all artists to facebookprofile)
profile.year_formed = year_formed
profile.save()
#authenticate user. then log him in.
#user = authenticate(username = profile.user.username)
now_has_account = authenticate(first_name = first_name, last_name = last_name)
login(request, now_has_account)
#profile.save()
return HttpResponseRedirect('/music/home/')
In the views the code brakes at user = facebook_user.save()
I tried clearing the whole database,
also
What I'm receiving from the html is a form with first_name,last_name,id,year_formed,webpull. The data gets to the backend fine.
Forms.py
class FacebookUserForm(forms.ModelForm):
class Meta:
model = User
fields = ('first_name', 'last_name')
class FacebookProfileForm(forms.ModelForm):
class Meta:
model = FacebookProfile
fields = ('id', 'year_formed', 'webpull',)
what im authenticating Auth_Backend.py
class OnlynameandsurnameAuth(ModelBackend):
def authenticate(self, first_name = None, last_name = None):
try:
return User.objects.get(first_name = first_name, last_name = last_name)
except:
return None
then auth.py
admin.site.register(FacebookProfile)
the backend authentification settings.py
AUTHENTICATION_BACKENDS = (
# ... your other backends
#'music.auth_backend.PasswordlessAuthBackend',
'music.auth_backend.OnlynameandsurnameAuth',
)
any ideas how to save the first_name and last_name without having a UNIQUE error?
Thanks! :D
回答1:
If you use the default authenticate function not providing a password should always (?) fail, which means that
has_account = authenticate(first_name = first_name, last_name = last_name)
always will be None.
But the main problem is that you do not set a username for the new User, only first_name and last_name. This will work once, but after one User with an empty username was created the next attempt will fail, as Users need an unique username. So: Add a username!
Besides that, I think that
user = facebook_user.save()
does not assign the User to "user" but the Form. You should use facebook_user.instance.
来源：https://stackoverflow.com/questions/41313621/unique-constraint-failed-auth-user-username