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- # coding=utf-8
- from rest_framework import serializers
- from .models import ExamPaper
- from utils.exceptions import CustomError
- class ExamPaperSerializer(serializers.ModelSerializer):
- subject_name = serializers.CharField(source='subject.name', read_only=True)
- class Meta:
- model = ExamPaper
- fields = "__all__"
- def validate(self, attrs):
- if 'subject' in attrs and attrs['subject'].delete:
- raise CustomError(u'科目[%s]已被删除！' % attrs['subject'].name)
- return attrs
- def create(self, validated_data):
- validated_data['create_user'] = self.context['request'].user
- instance = super(ExamPaperSerializer, self).create(validated_data)
- instance.update_count()
- instance.save()
- instance.generate_detail()
- return instance
- def update(self, instance, validated_data):
- old_count = []
- old_count.append(instance.single_simple_count)
- old_count.append(instance.single_mid_count)
- old_count.append(instance.single_hard_count)
- old_count.append(instance.multiple_simple_count)
- old_count.append(instance.multiple_mid_count)
- old_count.append(instance.multiple_hard_count)
- old_count.append(instance.fill_simple_count)
- old_count.append(instance.fill_mid_count)
- old_count.append(instance.fill_hard_count)
- old_count.append(instance.judgment_simple_count)
- old_count.append(instance.judgment_mid_count)
- old_count.append(instance.judgment_hard_count)
- if instance.delete:
- raise CustomError(u'试卷[%s]已经被删除,禁止操作' % instance.name)
- instance = super(ExamPaperSerializer, self).update(instance, validated_data)
- instance.update_count()
- instance.save()
- new_count = []
- new_count.append(instance.single_simple_count)
- new_count.append(instance.single_mid_count)
- new_count.append(instance.single_hard_count)
- new_count.append(instance.multiple_simple_count)
- new_count.append(instance.multiple_mid_count)
- new_count.append(instance.multiple_hard_count)
- new_count.append(instance.fill_simple_count)
- new_count.append(instance.fill_mid_count)
- new_count.append(instance.fill_hard_count)
- new_count.append(instance.judgment_simple_count)
- new_count.append(instance.judgment_mid_count)
- new_count.append(instance.judgment_hard_count)
- change_detail = False
- for i in range(0, len(old_count)):
- if old_count[i] != new_count[i]:
- change_detail = True
- break
- if change_detail:
- instance.clear_detail()
- instance.generate_detail()
- return instance
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