getting Django current user on iOS app - ios

Question

I'm new to Django, I'm starting a Django app, I'm using the registration app and Django rest framework, this app will also serve as the backend for an iOS app, I already manage to create users from the iOS app and edit User Profiles from the browser, I need help to find an approach that lets the user edit his profile details once he is logged in. I tried setting a lookup_field like "user.username" to the UserProfileViewSet so I could access the UserProfile object and edit it, but that didn't work.
I also thought I could somehow return the user id after logging in and use this id to reference the userprofile I wanna edit but it does not seem practical at all. What do you think??
Other way I found to do this is by calling user.get_profile() but I don't know how I can make this work from the iOS app.
Here is my UserProfile Model, and serializers, any help would be great. Thanks
class UserProfile(models.Model):
user = models.OneToOneField(User, unique=True)
# Extra attribuets
pagetitle = models.TextField(null=False)
location = models.TextField(null=True)
website = models.TextField(null=True)
bio = models.TextField(null=True)
sex = models.TextField(null=True)
birthdate = models.DateField(null=True)
def __unicode__(self):
return "%s's profile" % self.user
def create_profile(sender, instance, created, **kwargs):
if created:
profile, created= UserProfile.objects.get_or_create(user=instance)
post_save.connect(create_profile, sender=User)
class UserSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = User
fields = ('username','email','password')
class UserProfileSerializer(serializers.HyperlinkedModelSerializer):
user = UserSerializer(many=False)
class Meta:
model = UserProfile
fields = ('user','bio')
I create the UserProfile using a signal like this
def create_profile(sender, instance, created, **kwargs):
if created:
profile, created= UserProfile.objects.get_or_create(user=instance)
post_save.connect(create_profile, sender=User)

Answer 1

You didn't post your ViewSet code, so I have to guess. But your model should be set to User and your lookup_field should be set to username.
Something like:
class UserViewSet(ModelViewSet):
model = User
lookup_field = "username"

Answer 2

For everyone trying to get the profile for a user this is the way I managed to do it thanks to Kevin's help.
class UserSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = User
depth = 1
fields = ('id','username','email','profile')
class CurrentUserView(APIView):
def get(self, request):
serializer = UserSerializer(request.user)
return Response(serializer.data)
Using a url like this
url(r'^api/current-user',CurrentUserView.as_view(),
name="current_user"),
You will get an answer like this
"id": 1,
"username": "username",
"email": "email#email.com",
"profile": {
"id": 1,
"user": 1,
"bio": "My Bio",
"sex": "M",
"birthdate": "1987-12-02"
}