MobileTokenBaseSerializer.py

class MobileTokenBaseSerializer(serializers.Serializer):
	verification_code=serializers.CharField()

	def validate_verification_code(self,value):
		if not MobileToken.objects.filter(verification_code=value).exists():
			raise serializers.ValidationError("The token provided does not exist")
		elif MobileToken.objects.filter(verification_code=value).first().is_used:
			raise serializers.ValidationError("The token provided is used")
		return value

	def validate(self, attrs):

		m_token=MobileToken.objects.filter(verification_code=attrs["verification_code"]).first()
		self.user = m_token.user

		return {}

class MobileTokenSerializer(MobileTokenBaseSerializer):

	@classmethod
	def get_token(cls, user):
		return RefreshToken.for_user(user)

	def validate(self, attrs):
		data = super().validate(attrs)

		refresh = self.get_token(self.user)

		data['refresh'] = str(refresh)
		data['access'] = str(refresh.access_token)

		return data