421 lines
17 KiB
Python
421 lines
17 KiB
Python
from django.shortcuts import render
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from rest_framework.viewsets import ModelViewSet, GenericViewSet
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from rest_framework.mixins import ListModelMixin, DestroyModelMixin, RetrieveModelMixin
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from apps.exam.exports import export_question
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from apps.exam.models import Question, Questioncat, PaperQuestion
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from apps.exam.serializers import (QuestionSerializer, QuestioncatSerializer, PaperSerializer, ExamDetailSerializer, ExamRecordDetailSerializer, ExamListSerializer,
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ExamCreateUpdateSerializer, ExamListSerializer, ExamRecordSubmitSerializer, PaperDetailSerializer, PaperCreateUpdateSerializer, AnswerDetailOutSerializer, ExamRecordListSerializer)
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from rest_framework.decorators import action
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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 rest_framework.exceptions import ParseError
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from openpyxl import Workbook, load_workbook
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from django.conf import settings
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from apps.exam.models import Paper, Exam, ExamRecord, AnswerDetail
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from django.utils import timezone
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from django.db import transaction
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from rest_framework.serializers import Serializer
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from datetime import datetime
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from apps.exam.filters import ExamRecordFilter, ExamFilter
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from datetime import timedelta
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from apps.system.mixins import CreateUpdateCustomMixin
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# Create your views here.
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def enctry(s):
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k = 'ez9z3a4m*$%srn9ve_t71yd!v+&xn9@0k(e(+l6#g1h=e5i4da'
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encry_str = ""
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for i, j in zip(s, k):
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# i为字符，j为秘钥字符
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temp = str(ord(i)+ord(j))+'_' # 加密字符 = 字符的Unicode码 + 秘钥的Unicode码
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encry_str = encry_str + temp
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return encry_str
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# 解密
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def dectry(p):
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k = 'ez9z3a4m*$%srn9ve_t71yd!v+&xn9@0k(e(+l6#g1h=e5i4da'
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dec_str = ""
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for i, j in zip(p.split("_")[:-1], k):
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# i 为加密字符，j为秘钥字符
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# 解密字符 = (加密Unicode码字符 - 秘钥字符的Unicode码)的单字节字符
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temp = chr(int(i) - ord(j))
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dec_str = dec_str+temp
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return dec_str
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class QuestioncatViewSet(CreateUpdateCustomMixin, ModelViewSet):
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perms_map = {'get': '*', 'post':'question', 'put':'question', 'delete':'question'}
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queryset = Questioncat.objects.all()
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serializer_class = QuestioncatSerializer
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filterset_fields = ['parent']
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search_fields = ['name']
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class QuestionViewSet(CreateUpdateCustomMixin, ModelViewSet):
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perms_map = {'get': '*', 'post':'question', 'put':'question', 'delete':'question'}
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queryset = Question.objects.all()
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serializer_class = QuestionSerializer
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filterset_fields = ['level', 'type', 'year']
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search_fields = ['name', 'options', 'resolution']
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@action(methods=['get'], detail=False,
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url_path='export', url_name='export_question', perms_map=[{'get': '*'}], serializer_class=Serializer)
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def export_question(self, request):
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"""
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导出题目
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导出题目
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"""
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queryset = self.filter_queryset(self.get_queryset())
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path = export_question(queryset)
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return Response({'path': path})
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@action(methods=['post'], detail=False, url_name='enable_question', perms_map={'post': 'question'}, serializer_class=Serializer)
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def enable(self, request):
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"""
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启用题目
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启用题目
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"""
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ids = request.data.get('ids', None)
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if ids:
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Question.objects.filter(pk__in=ids).update(enabled=True)
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return Response(status=200)
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@action(methods=['post'], detail=False,
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url_path='import', url_name='import_question', perms_map={'post': 'question'}, serializer_class=Serializer)
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def import_question(self, request):
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"""
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导入题目
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导入题目
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"""
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xlsxpath = request.data['path']
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fullpath = settings.BASE_DIR + xlsxpath
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wb = load_workbook(fullpath)
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sheet = wb.worksheets[0]
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qlist = ['A', 'B', 'C', 'D', 'E', 'F']
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leveldict = {'低': '低', '中': '中', '高': '高'}
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notinlist = []
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# 验证文件内容
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if sheet['a2'].value != '题目类型':
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return Response({"error": "类型列错误!"})
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if sheet['b2'].value != '分类':
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return Response({"error": "分类列错误!"})
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if sheet['c2'].value != '题目':
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return Response({"error": "题目列错误!"})
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questioncatdict = {}
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questioncats = Questioncat.objects.all()
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for i in questioncats:
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questioncatdict[i.name] = i.id
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i = 3
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while sheet['c'+str(i)].value:
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type = sheet['a'+str(i)].value.replace(' ', '')
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questioncat = sheet['b'+str(i)].value
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if questioncat:
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questioncat = questioncat.replace(' ', '')
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else:
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return Response(str(i)+'行没有分类', status=400)
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name = sheet['c'+str(i)].value
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answer = {}
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if sheet['d'+str(i)].value:
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answer['A'] = sheet['d'+str(i)].value
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if sheet['e'+str(i)].value:
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answer['B'] = sheet['e'+str(i)].value
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if sheet['f'+str(i)].value:
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answer['C'] = sheet['f'+str(i)].value
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if sheet['g'+str(i)].value:
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answer['D'] = sheet['g'+str(i)].value
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if sheet['h'+str(i)].value:
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answer['E'] = sheet['h'+str(i)].value
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if sheet['i'+str(i)].value:
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answer['F'] = sheet['i'+str(i)].value
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right = sheet['j'+str(i)].value
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if right:
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right = right.replace(' ', '')
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else:
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return Response(str(i)+'行没有答案', status=400)
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resolution = sheet['k'+str(i)].value
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level = sheet['l'+str(i)].value
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year = sheet['m' + str(i)].value
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if level:
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level = level.replace(' ', '')
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cateobj = None
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if questioncat not in questioncatdict:
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return Response(str(i)+"行不存在分类("+questioncat+")!请先新建", status=400)
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else:
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cateobj = Questioncat.objects.get(
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id=questioncatdict[questioncat])
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if type == '单选':
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if Question.objects.filter(type='单选', name=name, year=year, options=answer, questioncat=cateobj).exists():
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notinlist.append(i)
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else:
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if right in ['A', 'B', 'C', 'D', 'E', 'F']:
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obj = Question()
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obj.type = '单选'
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if cateobj:
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obj.questioncat = cateobj
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obj.name = name
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obj.options = answer
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obj.right = right
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obj.resolution = resolution if resolution else ''
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obj.year = year if year else None
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if level in leveldict:
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obj.level = leveldict[level]
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else:
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obj.level = '低'
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obj.save()
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elif type == '多选':
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right = list(right.strip())
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if Question.objects.filter(type='多选', name=name, year=year, options=answer, questioncat=cateobj).exists():
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notinlist.append(i)
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else:
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if [False for c in right if c not in qlist]:
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pass
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else:
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obj = Question()
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obj.type = '多选'
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obj.questioncat = cateobj
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obj.name = name
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obj.options = answer
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obj.right = right
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obj.resolution = resolution if resolution else ''
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obj.year = year if year else None
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if level in leveldict:
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obj.level = leveldict[level]
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else:
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obj.level = '低'
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obj.save()
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elif type == '判断':
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if right == 'A' or right == '对' or right == '正确':
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right = 'A'
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else:
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right = 'B'
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if Question.objects.filter(type='判断', name=name, is_delete=0, options={'A': '对', 'B': '错'}, questioncat=cateobj).exists():
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notinlist.append(i)
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else:
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obj = Question()
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obj.type = '判断'
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obj.questioncat = cateobj
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obj.name = name
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obj.options = {'A': '对', 'B': '错'}
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obj.right = right
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obj.resolution = resolution if resolution else ''
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obj.year = year if year else None
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if level in leveldict:
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obj.level = leveldict[level]
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else:
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obj.level = '低'
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obj.save()
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i = i + 1
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return Response(notinlist, status=200)
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class PaperViewSet(ModelViewSet):
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"""
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试卷增删改查
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"""
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perms_map = {'get': '*', 'post':'paper', 'put':'paper', 'delete':'paper'}
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queryset = Paper.objects.all()
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serializer_class = PaperSerializer
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ordering = ['id']
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search_fields = ('name',)
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def get_serializer_class(self):
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if self.action in ['retrieve']:
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return PaperDetailSerializer
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elif self.action in ['create', 'update']:
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return PaperCreateUpdateSerializer
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return super().get_serializer_class()
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def create(self, request, *args, **kwargs):
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sr = PaperCreateUpdateSerializer(data=request.data)
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sr.is_valid(raise_exception=True)
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vdata = sr.validated_data
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vdata['create_by'] = request.user
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questions_ = vdata.pop('questions_')
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paper = Paper.objects.create(**vdata)
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q_list = []
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for i in questions_:
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q_list.append(PaperQuestion(question=i['question'], total_score=i['total_score'], paper=paper))
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PaperQuestion.objects.bulk_create(q_list)
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return Response(status=201)
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def update(self, request, *args, **kwargs):
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# 有考试在执行,不可更新
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now = timezone.now()
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paper = self.get_object()
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if Exam.objects.filter(close_time__gte=now, paper=paper).exists():
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raise ParseError('存在考试,不可编辑')
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sr = PaperCreateUpdateSerializer(instance=paper, data=request.data)
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sr.is_valid(raise_exception=True)
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vdata = sr.validated_data
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questions_ = vdata.pop('questions_')
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vdata['update_by'] = request.user
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Paper.objects.filter(id=paper.id).update(**vdata)
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q_list = []
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for i in questions_:
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q_list.append(PaperQuestion(question=i['question'], total_score=i['total_score'], paper=paper))
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PaperQuestion.objects.filter(paper=paper).delete()
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PaperQuestion.objects.bulk_create(q_list)
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return Response()
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class ExamViewSet(CreateUpdateCustomMixin, ModelViewSet):
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perms_map = {'get': '*', 'post':'exam', 'put':'exam', 'delete':'exam'}
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queryset = Exam.objects.all().select_related('paper', 'create_by')
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ordering = ['-id']
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search_fields = ('name',)
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serializer_class = ExamListSerializer
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filterset_class = ExamFilter
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def get_serializer_class(self):
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if self.action in ['create', 'update']:
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return ExamCreateUpdateSerializer
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elif self.action in ['retrieve']:
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return ExamDetailSerializer
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return super().get_serializer_class()
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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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instance.delete(soft=False)
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return Response(status=204)
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@action(methods=['post'], detail=True, perms_map=[{'post': '*'}], serializer_class=Serializer, permission_classes = [IsAuthenticated])
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@transaction.atomic
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def start(self, request, *args, **kwargs):
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"""
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开始考试
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开始考试具体题目信息
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"""
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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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er = ExamRecord()
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er.type = '正式考试'
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er.name = '正式考试' + datetime.now().strftime('%Y%m%d%H%M')
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er.limit = exam.paper.limit
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er.paper = exam.paper
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er.total_score = exam.paper.total_score
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er.start_time = now
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er.is_pass = False
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er.exam = exam
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er.create_by = request.user
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er.save()
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ret = {}
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ret['examrecord'] = er.id
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pqs = PaperQuestion.objects.filter(paper=exam.paper).order_by('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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ads = AnswerDetail.objects.select_related('question').filter(examrecord=er).order_by('id')
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ret['questions_'] = AnswerDetailOutSerializer(instance=ads, many=True).data
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return Response(ret)
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raise ParseError('暂不支持')
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class ExamRecordViewSet(ListModelMixin, DestroyModelMixin, RetrieveModelMixin, GenericViewSet):
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"""
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考试记录列表和详情
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"""
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perms_map = {'get': '*', 'post': '*', 'delete':'examrecord'}
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queryset = ExamRecord.objects.select_related('create_by')
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serializer_class = ExamRecordListSerializer
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ordering_fields = ['create_time', 'score', 'took', 'update_time']
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ordering = ['-update_time']
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search_fields = ('create_by__name', 'create_by__username')
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filterset_class = ExamRecordFilter
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def get_serializer_class(self):
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if self.action == 'retrieve':
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return ExamRecordDetailSerializer
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return super().get_serializer_class()
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def perform_destroy(self, instance): # 考试记录物理删除
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instance.delete(soft=False)
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@action(methods=['post'], detail=False, perms_map=[{'post': '*'}], serializer_class=Serializer, permission_classes = [IsAuthenticated])
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def clear(self, request, pk=None):
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"""
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清除七日前未提交的考试记录
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清除七日前未提交的考试记录
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"""
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now = timezone.now
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days7_ago = now - timedelta(days=7)
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ExamRecord.objects.filter(create_time__lte=days7_ago, is_submited=False).delete(soft=False)
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return Response(status=False)
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@action(methods=['get'], detail=False, permission_classes=[IsAuthenticated])
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def self(self, request, pk=None):
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'''
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个人考试记录
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个人考试记录
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'''
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queryset = ExamRecord.objects.filter(create_by=request.user).order_by('-update_time')
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page = self.paginate_queryset(queryset)
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serializer = self.get_serializer(page, many=True)
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return self.get_paginated_response(serializer.data)
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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 = self.get_object()
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now = timezone.now()
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if er.create_by != request.user:
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raise ParseError('提交人有误')
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exam = er.exam
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if not exam:
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raise ParseError('暂不支持')
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if now > exam.close_time + timedelta(minutes=30):
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raise ParseError('考试时间已过, 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['questions_']
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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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if er.score > 0.6*er.total_score:
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er.is_pass = True
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er.took = (now - er.create_time).total_seconds()
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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(ExamRecordListSerializer(instance=er).data) |