from rest_framework.serializers import ModelSerializer, CharField

from apps.exam.models import Question, Questioncat, Paper, Exam


class QuestioncatSerializer(ModelSerializer):
    class Meta:
        model = Questioncat
        fields = '__all__'


class QuestionSerializer(ModelSerializer):
    class Meta:
        model = Question
        fields = '__all__'


class PaperSerializer(ModelSerializer):
    class Meta:
        model = Paper
        exclude = ('questions',)

class ExamCreateUpdateSerializer(ModelSerializer):
    class Meta:
        model = Exam
        fields = ['name', 'place', 'open_time', 'close_time', 'proctor_name', 'proctor_phone']

class ExamListSerializer(ModelSerializer):
    create_by_name = CharField(source='create_by.name', read_only=True)
    class Meta:
        model = Exam
        fields = '__all__'