177 lines
7.2 KiB
Python
177 lines
7.2 KiB
Python
from apps.utils.viewsets import CustomModelViewSet, CustomGenericViewSet
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from apps.utils.mixins import ListModelMixin, DestroyModelMixin
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from rest_framework.mixins import RetrieveModelMixin
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from rest_framework.exceptions import ParseError
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from rest_framework.decorators import action
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from rest_framework.serializers import Serializer
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from django.db import transaction
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from .models import Questioncat, Question, Paper, PaperQuestion, Exam, ExamRecord, AnswerDetail
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from .serializers import (QuestioncatSerializer, QuestionSerializer, ExamSerializer,
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ExamRecordInitSerizlier, ExamRecordSerializer, ExamRecordDetailSerializer, ExamRecordSubmitSerializer,
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PaperSerializer, PaperListSerializer, PaperPatchSerializer)
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from django.utils import timezone
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from rest_framework.response import Response
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from rest_framework.permissions import IsAuthenticated
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from drf_yasg.utils import swagger_auto_schema
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from apps.utils.permission import has_perm
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from .filters import ExamFilter, ExamRecordFilter
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from apps.system.models import User
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# Create your views here.
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class QuestioncatViewSet(CustomModelViewSet):
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queryset = Questioncat.objects.all()
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serializer_class = QuestioncatSerializer
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class QuestionViewSet(CustomModelViewSet):
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queryset = Question.objects.all()
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serializer_class = QuestionSerializer
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filterset_fields = ["questioncat", "type", "enabled"]
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def update(self, request, *args, **kwargs):
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obj: Question = self.get_object()
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if AnswerDetail.objects.filter(question=obj).exists():
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raise ParseError("存在答题,该题目不可编辑")
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return super().update(request, *args, **kwargs)
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class PaperViewSet(CustomModelViewSet):
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queryset = Paper.objects.all()
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serializer_class = PaperSerializer
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list_serializer_class = PaperListSerializer
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partial_update_serializer_class = PaperPatchSerializer
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def update(self, request, *args, **kwargs):
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obj: Paper = self.get_object()
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if Exam.objects.filter(paper=obj).exists():
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raise ParseError("存在考试,该试卷不可编辑")
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return super().update(request, *args, **kwargs)
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class ExamViewSet(CustomModelViewSet):
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queryset = Exam.objects.all()
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serializer_class = ExamSerializer
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filterset_class = ExamFilter
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def get_queryset(self):
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qs = super().get_queryset()
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if has_perm(self.request.user, 'exam.view'):
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return qs
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user:User = self.request.user
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dept = user.belong_dept
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qs = qs.filter(is_public=True)
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qs = qs|qs.filter(p_users=user)
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if dept:
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qs = qs|qs.filter(p_depts=dept)
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return qs
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def destroy(self, request, *args, **kwargs):
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instance = self.get_object()
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if ExamRecord.objects.filter(exam=instance).exists():
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raise ParseError('存在考试记录,禁止删除')
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return super().destroy(request, *args, **kwargs)
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@swagger_auto_schema(request_body=Serializer, responses={200: ExamRecordInitSerizlier})
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@action(methods=['post'], detail=True, perms_map=[{'post': '*'}], serializer_class=Serializer)
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def attend(self, request, *args, **kwargs):
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"""
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参加考试
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返回考试具体题目信息
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"""
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exam: Exam = self.get_object()
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now = timezone.now()
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if now < exam.open_time or now > exam.close_time:
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raise ParseError('不在考试时间范围')
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tests = ExamRecord.objects.filter(
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exam=exam, create_by=request.user)
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chance_used = tests.count()
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if chance_used > exam.chance:
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raise ParseError('考试机会已用完')
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if exam.paper:
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with transaction.atomic():
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tests.update(is_last=False)
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er = ExamRecord()
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er.start_time = now
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er.is_pass = False
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er.is_submited = False
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er.exam = exam
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er.create_by = request.user
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er.is_last = True
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er.save()
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pqs = PaperQuestion.objects.filter(paper=exam.paper).order_by('sort', 'id')
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details = []
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for i in pqs:
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details.append(AnswerDetail(examrecord=er, question=i.question, total_score=i.total_score))
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AnswerDetail.objects.bulk_create(details)
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sr = ExamRecordInitSerizlier(er)
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res_data = sr.data
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res_data.update({"chance_used": chance_used})
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return Response(sr.data, status=201)
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raise ParseError('暂不支持')
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class ExamRecordViewSet(ListModelMixin, DestroyModelMixin, RetrieveModelMixin, CustomGenericViewSet):
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"""
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考试记录
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"""
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perms_map = {"get": "*", "delete": "examrecord.delete"}
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queryset = ExamRecord.objects.all()
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list_serializer_class = ExamRecordSerializer
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retrieve_serializer_class = ExamRecordDetailSerializer
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search_fields = ('create_by__name', 'create_by__username', 'exam__name')
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filterset_class = ExamRecordFilter
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def get_queryset(self):
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qs = super().get_queryset()
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if has_perm(self.request.user, "examrecord.view"):
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return qs
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return qs.filter(create_by=self.request.user)
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@swagger_auto_schema(request_body=ExamRecordSubmitSerializer, responses={200: ExamRecordSerializer})
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@action(methods=['post'], detail=True, perms_map=[{'post': '*'}], serializer_class=ExamRecordSubmitSerializer, permission_classes = [IsAuthenticated])
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@transaction.atomic
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def submit(self, request, pk=None):
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'''
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提交答卷
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提交答卷
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'''
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er: ExamRecord = self.get_object()
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now = timezone.now()
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if er.is_submited:
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raise ParseError('该考试记录已提交')
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exam:Exam = er.exam
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if not exam:
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raise ParseError('暂不支持')
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took = (now - er.start_time).total_seconds()
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if took > exam.paper.limit * 60:
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raise ParseError('答题时间超时，提交失败')
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serializer = ExamRecordSubmitSerializer(data = request.data)
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serializer.is_valid(raise_exception=True)
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vdata = serializer.validated_data
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questions_ = vdata['detail_']
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# 后端判卷
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ads = AnswerDetail.objects.select_related('question').filter(examrecord=er).order_by('id')
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total_score = 0
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try:
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for index, ad in enumerate(ads):
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ad.user_answer = questions_[index]['user_answer']
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if ad.question.type == '多选':
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if set(ad.question.right) == set(ad.user_answer):
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ad.is_right = True
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ad.score = ad.total_score
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else:
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if ad.question.right == ad.user_answer:
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ad.is_right = True
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ad.score = ad.total_score
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ad.save()
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total_score = total_score + ad.score
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except Exception as e:
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raise ParseError('判卷失败, 请检查试卷:' + str(e))
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er.score = total_score
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er.took = took
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er.end_time = now
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er.is_submited = True
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er.save()
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return Response(ExamRecordSerializer(er).data) |