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from django.shortcuts import render
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from django.http import HttpResponse
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from .models import *
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from django.shortcuts import render, redirect, get_object_or_404
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import random
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from django.http import JsonResponse
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import pandas as pd
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import json
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from django.db.models import Window, F
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from django.db.models.functions import Rank
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from django.shortcuts import get_object_or_404
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from django.views.decorators.csrf import csrf_exempt
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# 导入表单
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from .forms import UploadFileForm
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@csrf_exempt
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def toregister_view(request):
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return JsonResponse({'message': '注册成功！'})
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import json
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from django.views.decorators.csrf import csrf_exempt
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@csrf_exempt # 可选，视具体情况决定是否使用
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def register_view(request):
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if request.method == 'POST':
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try:
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data = json.loads(request.body) # 从请求体中加载 JSON 数据
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u = data.get("user", '')
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p = data.get("pwd", '')
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if u and p:
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stu = StudentInfo(stu_id=random.choice('0123456789'), stu_name=u, stu_pwd=p)
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stu.save()
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return JsonResponse({"message": "注册成功"})
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else:
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return JsonResponse({"message": "请输入完整的账号和密码！"}, status=400)
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except json.JSONDecodeError:
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return JsonResponse({"message": "无效的 JSON 数据！"}, status=400)
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return JsonResponse({"message": "只支持 POST 请求！"}, status=405)
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#
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@csrf_exempt
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def upload_students(request):
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if request.method == 'POST':
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form = UploadFileForm(request.POST, request.FILES)
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if form.is_valid():
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# 读取上传的 Excel 文件
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excel_file = request.FILES['file']
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df = pd.read_excel(excel_file) # 使用 pandas 读取 Excel 文件
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# 遍历 DataFrame，将每个学生保存到数据库
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for _, row in df.iterrows():
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student_id = row['student_id']
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name = row['name']
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Student.objects.get_or_create(student_id=student_id, name=name) # 如果学生已存在则不创建
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return JsonResponse({"message": "学生信息上传成功！"})
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else:
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form = UploadFileForm()
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return render(request, 'upload_students.html', {'form': form}) # 确保在GET请求时返回HttpResponse
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@csrf_exempt
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def roll_call(request):
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students = Student.objects.all() # 获取所有学生
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# 当教师点击“开始点名”按钮时
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if request.method == 'POST':
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try:
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data = json.loads(request.body)
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if data.get('start_roll_call') == 'true':
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# 设置权重：总分越高，被点名的概率越低
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weights = [1 / (student.score + 500) for student in students] # 根据分数调整被点名概率
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selected_student = random.choices(students, weights=weights, k=1)[0] # 随机选择一个学生
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request.session['selected_student_id'] = selected_student.student_id # 存储被点名学生的ID到session中
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return JsonResponse({"message": "点名成功", "student_id": selected_student.student_id, "student_name": selected_student.name})
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except json.JSONDecodeError:
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return JsonResponse({"error": "无效的 JSON 数据"}, status=400)
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return JsonResponse({"error": "只支持 POST 请求"}, status=405)
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@csrf_exempt
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def confirm_roll_call(request):
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if request.method == 'POST':
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try:
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# 从请求体中解析 JSON 数据
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data = json.loads(request.body)
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student_id = data.get('student_id')
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# 确保 student_id 存在
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if not student_id:
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return JsonResponse({"message": "未找到被点名学生ID"}, status=400)
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# 获取学生对象，若不存在则返回404
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student = get_object_or_404(Student, student_id=student_id)
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protection_awarded = False # 初始化保护权标志
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# 增加学生的被点名次数
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student.called_count += 1
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# 检查学生是否有“保护权”
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if student.called_count % 3 == 0:
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student.score += 2
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protection_awarded = True # 设置保护权标志
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print(f"Student {student.name} ({student.student_id})获得保护权，自动加2分")
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else:
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# 学生是否到课
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attended = data.get('attended', 'false').lower() == 'true' # 转为布尔值
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if attended: # 如果选择了到课
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student.score += 1 # 到课加1分
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student.attendance_count += 1 # 到课次数加1
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# 处理是否准确重复问题
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if data.get('question_repeat') == 'accurate':
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student.score += 0.5 # 重复问题准确，加0.5分
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else:
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student.score -= 1 # 重复问题不准确，扣1分
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# 处理回答问题的准确性（0-3分）
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answer_accuracy = float(data.get('answer_accuracy', 0))
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student.score += answer_accuracy # 根据回答准确性加分
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else:
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student.score -= 5 # 未到课扣5分
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# 保存更新后的学生信息
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student.save()
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return JsonResponse({
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"message": "确认点名成功",
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"student_id": student.student_id,
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"student_name": student.name,
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"current_score": student.score,
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"protection_awarded": protection_awarded
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})
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except json.JSONDecodeError:
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return JsonResponse({"message": "请求体解析错误"}, status=400)
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return JsonResponse({"message": "不支持的请求方法"}, status=405)
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@csrf_exempt
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def leaderboard(request):
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students = Student.objects.all().order_by('-score') # 按分数降序排列
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leaderboard_data = [{"student_id": student.student_id, "name": student.name, "score": student.score} for student in students]
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return JsonResponse({"leaderboard": leaderboard_data}) # 返回排行榜数据
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# 111
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@csrf_exempt
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def toLogin_view(request):
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return JsonResponse({"message": "请提供用户名和密码进行登录"})
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@csrf_exempt
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def Login_view(request):
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if request.method == 'POST':
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try:
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data = json.loads(request.body)
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u = data.get("user", '')
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p = data.get("pwd", '')
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if u and p:
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c = StudentInfo.objects.filter(stu_name=u, stu_pwd=p).count()
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if c >= 1:
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return JsonResponse({"message": "登录成功！"})
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else:
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return JsonResponse({"message": "账号密码错误！"}, status=400)
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else:
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return JsonResponse({"message": "请输入正确的账号和密码！"}, status=400)
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except json.JSONDecodeError:
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return JsonResponse({"message": "无效的JSON数据！"}, status=400)
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return JsonResponse({"message": "仅支持POST请求"}, status=405) |
