class CategorySerializer(serializers.ModelSerializer):
    class Meta:
        model = Category
        fields = ('id', 'name', 'cover', 'baseline', 'color')
        read_only_fields = ('name', 'cover', 'baseline', 'color')

class CourseSerializer(serializers.ModelSerializer):
    session_set = SessionSerializer(many=True, required=False)
    teacher = UserSerializer(required=False)
    category = CategorySerializer()
    upcoming_sessions = SessionSerializer(many=True, required=False)
    has_voted = serializers.SerializerMethodField(read_only=True, help_text="Has the current user already voted for this course?")


    def create(self, validated_data):
        course = Course(validated_data())
        course.save()
        import ipdb; ipdb.set_trace()
        return course

    def get_has_voted(self, obj):
        request = self.context.get('request')
        if Vote.get_vote(request.user, obj):
            return True
        else:
            return False

##### ANSWER
serializer.validated_data = OrderedDict([(u'name', u'dsqdsqdsqdsq'), (u'category', OrderedDict()), (u'goals', u'dsqdsqdsqdsq'), (u'price', 7), (u'duration', 3), (u'language', u'fr')])

request.data :  {u'category': {u'id': 1}, u'name': u'dsqdsqdsqdsq', u'language': u'fr', u'price': 7, u'duration': 3, u'plan': u'<p>dsqdsqdsq</p>', u'minseats': 7, u'maxseats': 14, u'goals': u'dsqdsqdsqdsq', u'description': u'<p>dsqdsqdsqqdsq</p>'}