I have used Django Rest Framework for Rest API and django-oauth-toolkit for token based authentication. I have designed and api for user registration. When user is registered, a token is generated and saved to the database. I want user login from that token. I mean a token based authentication because i want to develop a mobile application. I can get access_token using curl when sending request for logging in but how do i implement in view so that app sends a post request to 127.0.0.1:8000/o/token asking for the token so that the request contains username, password, client_id and client_secret. The server then receives the credentials and if they are valid it returns the access_token. The rest of the time it should query the server using that token.
views.py
class UserLoginAPI(APIView):
permission_classes = [AllowAny]
serializer_class = UserLoginSerializer
def post(self, request, *args, **kwargs):
access_token = AccessToken.objects.get(token=request.POST.get('access_token'), expires__gt=timezone.now()) # error is shown here. I get None
data = request.data
serializer = UserLoginSerializer(data=data)
if serializer.is_valid(raise_exception=True):
new_data = serializer.data
return Response(new_data, status=status.HTTP_200_OK)
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
serializers.py
class UserCreateSerializer(ModelSerializer):
class Meta:
model = User
extra_kwargs = {"password": {"write_only": True}}
def create(self, validated_data):
username = validated_data['username']
first_name = validated_data['first_name']
last_name = validated_data['last_name']
email = validated_data['email']
password = validated_data['password']
confirm_password = validated_data['password']
user_obj = User(
username = username,
first_name = first_name,
last_name = last_name,
email = email
)
user_obj.set_password(password)
user_obj.save()
if user_obj:
expire_seconds = oauth2_settings.user_settings['ACCESS_TOKEN_EXPIRE_SECONDS']
scopes = oauth2_settings.user_settings['SCOPES']
application = Application.objects.get(name="Foodie")
expires = datetime.now() + timedelta(seconds=expire_seconds)
access_token = AccessToken.objects.create(user=user_obj,
application=application,
token = generate_token(),
expires=expires,
scope=scopes)
return validated_data
class UserLoginSerializer(ModelSerializer):
# token = CharField(allow_blank=True, read_only=True)
username = CharField()
class Meta:
model = User
fields = [
'username',
'password',
# 'token',
]
extra_kwargs = {"password":
{"write_only": True}
}
So if you want a api to get token depend on username and password will look like this:
def get_token(request):
username = request.POST.get("username")
password = request.POST.get("password")
.... # other parameters
try:
user = User.objects.get(username=username, password=password)
except ObjectDoesNotExist:
return HttpResponse("Can't find this user")
else:
try:
access_token = AccessToken.objects.get(user=user)
except ObjectDoesNotExist:
return HttpResponse("Haven't set any token")
else:
return HttpResponse(access_token)
If you want to use DRF to handle this:
@api_view(['POST'])
def get_token(request):
# get token by query just like above
serializer = TokenSerializer(data=access_token.token) #you can pass more parameters to data if you want, but you also have to edit your TokenSerializer
if serializer.is_valid():
serializer.save()
return Response(serializer.data, status=status.HTTP_201_CREATED)
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
Your TokenSerializer:
class TokenSerializer(ModelSerializer):
class Meta:
model = AccessToken
field = (token,)
It depends
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