Ross
523 lines
15 KiB
Python
523 lines
15 KiB
Python
from physics.decorators import user_is_author_or_physics_checker
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from physics.filters import QuestionFilter, UserAnswerFilter
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from generic.mixins import SuperuserRequiredMixin
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from physics.tables import QuestionTable, UserAnswerTable
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from django.shortcuts import render, get_object_or_404, redirect
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from django.views.decorators.csrf import csrf_exempt
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from django import forms
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# from django.contrib.auth.models import User
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from django.contrib.auth.decorators import login_required, user_passes_test
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from django.contrib.auth.models import User
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from django.contrib.auth.mixins import LoginRequiredMixin
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from django.views.generic.detail import DetailView
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from django.views.generic.edit import CreateView, UpdateView, DeleteView
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from django.views.generic import ListView
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from django.db.models.functions import Lower
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from django.core.cache import cache
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from django.urls import reverse_lazy, reverse
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from django.http import Http404, JsonResponse
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from django.http import HttpResponseRedirect, HttpResponse
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from django_filters.views import FilterView
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from django_tables2.views import SingleTableMixin
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from reversion.views import RevisionMixin
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from .models import Question, Category, Exam, CidUserAnswer
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from collections import defaultdict
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import os
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import base64
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import mimetypes
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import json
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import statistics
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import plotly.express as px
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from generic.views import ExamCloneMixin, ExamViews, GenericViewBase
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from rest_framework import viewsets, permissions
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from rest_framework.pagination import PageNumberPagination
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from django.core.exceptions import PermissionDenied
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from .forms import CidUserAnswerForm, ExamForm
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from .decorators import (
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user_is_author_or_physics_checker,
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user_is_exam_author_or_physics_checker,
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)
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class AuthorOrCheckerRequiredMixin(object):
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def get_object(self, *args, **kwargs):
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obj = super().get_object(*args, **kwargs)
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if self.request.user.groups.filter(name="physics_checker").exists():
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return obj
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if self.request.user not in obj.author.all():
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raise PermissionDenied() # or Http404
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return obj
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def question_list(request):
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questions = Question.objects.all()
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return render(request, "physics/question_list.html", {"questions": questions})
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@login_required
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@user_is_author_or_physics_checker
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def question_detail(request, pk):
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question = get_object_or_404(Question, pk=pk)
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return render(request, "physics/question_detail.html", {"question": question})
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def active_exams(request):
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exams = Exam.objects.all()
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print(exams)
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active_exams = []
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for exam in exams:
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if exam.active:
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active_exams.append(exam)
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return render(request, "physics/available_exam_list.html", {"exams": active_exams})
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@login_required
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def exam_scores_cid(request, pk):
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exam = get_object_or_404(Exam, pk=pk)
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questions = exam.exam_questions.all()
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cids = (
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CidUserAnswer.objects.filter(question__in=questions, exam__id=pk)
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.order_by("cid")
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.values_list("cid", flat=True)
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.distinct()
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)
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user_answers_and_marks = defaultdict(list)
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user_answers_marks = defaultdict(list)
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user_answers = defaultdict(list)
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user_names = {}
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by_question = defaultdict(list)
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unmarked = set()
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# Loop through all candidates
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for cid in cids:
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# Convoluted (probably...)
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user_names[cid] = cid
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for q in questions:
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# Get user answer
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s = q.cid_user_answers.filter(cid=cid, exam__id=pk).first()
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if not s:
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# skip if no answer
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user_answers_marks[cid].append(0)
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user_answers[cid].append("")
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by_question[q].append(("", 0))
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continue
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ans = s.get_answers()
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answer_scores = s.get_answer_scores()
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user_answers[cid].append(ans)
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user_answers_marks[cid].append(answer_scores)
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user_answers_and_marks[cid].append((ans, answer_scores))
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zipped_ans_scores = zip(ans, answer_scores)
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by_question[q].append(zipped_ans_scores)
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user_scores = {}
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for user in user_answers_marks:
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user_scores[user] = sum([sum(i) for i in user_answers_marks[user]])
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user_scores_list = list(user_scores.values())
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if len(user_scores_list) < 1:
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mean = 0
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median = 0
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mode = 0
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fig_html = ""
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else:
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mean = statistics.mean(user_scores_list)
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median = statistics.median(user_scores_list)
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try:
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mode = statistics.mode(user_scores_list)
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except statistics.StatisticsError:
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mode = "No unique mode"
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df = user_scores_list
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fig = px.histogram(
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df,
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x=0,
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title="{}: distribution of scores".format(exam),
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labels={"0": "Score"},
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height=400,
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width=600,
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)
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fig_html = fig.to_html()
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max_score = len(questions)
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return render(
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request,
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"physics/exam_scores.html",
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{
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"cids": cids,
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"exam": exam,
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"unmarked": unmarked,
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"questions": questions,
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"by_question": by_question,
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"user_answers": dict(user_answers),
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"user_answers_marks": dict(user_answers_marks),
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"user_scores": user_scores,
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"user_scores_list": user_scores_list,
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"user_names": user_names,
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"user_answers_and_marks": user_answers_and_marks,
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"max_score": max_score,
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"mean": mean,
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"median": median,
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"mode": mode,
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"plot": fig_html,
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},
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)
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def exam_scores_cid_user(request, pk, sk, passcode=None):
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exam = get_object_or_404(Exam, pk=pk)
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cid = sk
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if not exam.check_cid_user(cid, passcode):
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raise Http404("Error accessing exam")
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questions = exam.exam_questions.all()
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answers_and_marks = []
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answers_marks = []
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answers = []
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view_all_results = False
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if request.user.groups.filter(name="view_all_results").exists():
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view_all_results = True
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for q in questions:
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# Get user answer
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user_answer = q.cid_user_answers.filter(cid=cid, exam__id=pk).first()
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ans = user_answer.get_answers()
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answer_scores = user_answer.get_answer_scores()
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correct_answers = q.get_answers()
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if not exam.publish_results and not view_all_results:
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correct_answers = ("*****", "*****", "*****", "*****", "*****")
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answer_scores = (0, 0, 0, 0, 0)
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answers.append(ans)
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answers_marks.append(answer_scores)
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merged_ans = zip(q.get_questions(), ans, answer_scores, correct_answers)
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answers_and_marks.append((q, merged_ans))
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total_score = sum(sum(i) for i in answers_marks)
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max_score = len(questions) * 5
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return render(
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request,
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"physics/exam_scores_user.html",
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{
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"exam": exam,
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"cid": cid,
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"questions": questions,
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"answers": answers,
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"answers_marks": answers_marks,
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"total_score": total_score,
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"max_score": max_score,
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"answers_and_marks": answers_and_marks,
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},
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)
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def exam_take_old(request, pk):
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exam = get_object_or_404(Exam, pk=pk)
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if not exam.active:
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raise Http404("Exam not found")
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questions = exam.exam_questions.all()
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return render(
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request,
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"physics/exam_take_old.html",
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{
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"exam": exam,
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"questions": questions,
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},
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)
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def exam_start(request, pk):
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exam = get_object_or_404(Exam, pk=pk)
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if not exam.active:
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raise Http404("Exam not found")
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return render(
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request,
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"physics/exam_start.html",
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{
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"exam": exam,
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},
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)
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def exam_finish(request, pk, cid, passcode=None):
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exam = get_object_or_404(Exam, pk=pk)
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if not exam.check_cid_user(cid, passcode):
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raise Http404("Error accessing exam")
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questions = exam.exam_questions.all()
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answers = CidUserAnswer.objects.filter(cid=cid, exam=exam)
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answer_question_map = {}
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for ans in answers:
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answer_question_map[ans.question] = ans
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question_answer_tuples = []
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answer_count = 0
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for q in questions:
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# if q in answer_question_map and answer_question_map[q].answer:
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if q in answer_question_map: # might need to improve this
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question_answer_tuples.append((q, answer_question_map[q]))
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answer_count += 1
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else:
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question_answer_tuples.append((q, None))
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if not exam.active:
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raise Http404("Exam not found")
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return render(
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request,
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"physics/exam_finish.html",
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{
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"exam": exam,
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"cid": cid,
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"question_answer_tuples": question_answer_tuples,
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"answer_count": answer_count,
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"exam_length": len(questions),
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"passcode": passcode,
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},
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)
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def exam_take(request, pk, sk, cid, passcode=None):
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exam = get_object_or_404(Exam, pk=pk)
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if not exam.active:
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raise Http404("Exam not found")
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if not exam.check_cid_user(cid, passcode):
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raise Http404("Error accessing exam")
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question = exam.exam_questions.all()[sk]
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exam_length = len(exam.exam_questions.all())
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pos = exam.get_question_index(question)
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answer = question.cid_user_answers.filter(cid=cid, exam=exam).first()
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if request.method == "POST":
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if answer:
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form = CidUserAnswerForm(request.POST, instance=answer)
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else:
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form = CidUserAnswerForm(request.POST)
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if form.is_valid() and not exam.publish_results:
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answer = form.save(commit=False)
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answer.cid = cid
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answer.question = question
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answer.exam = exam
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# answer.published_date = timezone.now()
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answer.save()
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kwargs = {"pk": pk, "cid": cid, "passcode": passcode}
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take_url = "physics:exam_take"
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finish_url = "physics:exam_finish"
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if "next" in request.POST:
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return redirect(take_url, sk=pos + 1, **kwargs)
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elif "previous" in request.POST:
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return redirect(take_url, sk=pos - 1, **kwargs)
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elif "finish" in request.POST:
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return redirect(finish_url, **kwargs)
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elif "goto" in request.POST:
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return redirect(take_url, sk=int(request.POST.get("goto")), **kwargs)
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else:
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form = CidUserAnswerForm(instance=answer)
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previous = -1
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if sk > 0:
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previous = sk - 1
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next = sk + 1
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if sk == exam_length - 1:
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next = False
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saved_answer = False
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if answer is not None:
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saved_answer = [answer.a, answer.b, answer.c, answer.d, answer.e]
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return render(
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request,
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"physics/exam_take.html",
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{
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"form": form,
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"cid": cid,
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"exam": exam,
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"question": question,
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"next": next,
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"previous": previous,
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"exam_length": exam_length,
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"pos": pos,
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"passcode": passcode,
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},
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)
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def loadJsonAnswer(answer):
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# As access is not restricted make sure the data appears valid
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if (not isinstance(answer["cid"], int)) or (not isinstance(answer["eid"], int)):
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return False, JsonResponse({"success": False, "error": "invalid"})
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# The model should catch invalid data but this should be less intensive
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max_int = 2147483647
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if answer["cid"] > max_int or answer["eid"] > max_int:
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return False, JsonResponse({"success": False, "error": "invalid candidate id"})
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exam = get_object_or_404(Exam, pk=answer["eid"])
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# if not exam.active:
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# return False, JsonResponse(
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# {"success": False, "error": "No active exam: {}".format(answer["eid"])}
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# )
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questions = defaultdict(dict)
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for q, n, a in answer["ans"]:
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questions[q][n] = a
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pass
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for qid in questions:
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exiting_answers = CidUserAnswer.objects.filter(
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question__id=qid, exam__id=answer["eid"], cid=answer["cid"]
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)
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a = questions[qid]["a"]
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b = questions[qid]["b"]
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c = questions[qid]["c"]
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d = questions[qid]["d"]
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e = questions[qid]["e"]
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if not exiting_answers:
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ans = CidUserAnswer(a=a, b=b, c=c, d=d, e=e, cid=answer["cid"])
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ans.question_id = qid
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ans.exam_id = answer["eid"]
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ans.full_clean()
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ans.save()
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else:
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# Update an existing answer
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# should never be more than one (famous last words)
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ans = exiting_answers[0]
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ans.a = a
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ans.b = b
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ans.c = c
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ans.d = d
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ans.e = e
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ans.full_clean()
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ans.save()
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return True, None
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PhysicsExamViews = ExamViews(Exam, Question, "physics", "physics", loadJsonAnswer)
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GenericViews = GenericViewBase("physics", Question, CidUserAnswer, Exam)
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class ExamCreate(RevisionMixin, LoginRequiredMixin, CreateView):
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model = Exam
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form_class = ExamForm
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def form_valid(self, form):
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self.object = form.save(commit=False)
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self.object.save()
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form.instance.author.add(self.request.user.id)
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return super().form_valid(form)
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class ExamClone(AuthorOrCheckerRequiredMixin, ExamCloneMixin, ExamCreate):
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"""Clone exam view"""
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class ExamDelete(RevisionMixin, AuthorOrCheckerRequiredMixin, DeleteView):
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model = Exam
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template_name = "exam_confirm_delete.html"
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success_url = reverse_lazy("physics:index")
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class ExamUpdate(
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RevisionMixin, LoginRequiredMixin, AuthorOrCheckerRequiredMixin, UpdateView
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):
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model = Exam
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form_class = ExamForm
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def form_valid(self, form):
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self.object = form.save(commit=False)
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self.object.save()
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form.instance.author.add(self.request.user.id)
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return super().form_valid(form)
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class QuestionView(
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LoginRequiredMixin, SingleTableMixin, FilterView, AuthorOrCheckerRequiredMixin
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):
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model = Question
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table_class = QuestionTable
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template_name = "physics/question_view.html"
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filterset_class = QuestionFilter
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class UserAnswerView(AuthorOrCheckerRequiredMixin, LoginRequiredMixin, DetailView):
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model = CidUserAnswer
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class UserAnswerTableView(
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AuthorOrCheckerRequiredMixin, LoginRequiredMixin, SingleTableMixin, FilterView
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):
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model = CidUserAnswer
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table_class = UserAnswerTable
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template_name = "physics/user_answer_question_view.html"
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filterset_class = UserAnswerFilter
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class UserAnswerDelete(SuperuserRequiredMixin, DeleteView):
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model = CidUserAnswer
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template_name = "user_answer_delete.html"
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success_url = reverse_lazy("physics:user_answer_table_view")
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