from rest_framework import serializers
from .models import *


class WorksInfoSerializer(serializers.ModelSerializer):
    class Meta:
        model = Works
        fields = '__all__'
    grade = serializers.CharField(label="年级", required=True)
    name = serializers.CharField(label="事件名称", max_length=30, required=True)
    description = serializers.CharField(label="事件描述", max_length=200, required=True)
    img = serializers.ImageField(label="图片", required=False)

    """用来校验传入年级是否符合规范"""
    def validate_grade(self, value):
        if not (2002 < value <= 2021):
            raise serializers.ValidationError(code='42006', detail={'msg': get_msg(42006),
                                                                "code": '42006'})
        return value