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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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import pandas as pd
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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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# 导入表单
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from .forms import UploadFileForm
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# Create your views here.
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def toLogin_view(request):
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return render(request,'login.html')
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def Login_view(request):
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u=request.POST.get("user",'')
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p=request.POST.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 HttpResponse("登录成功！")
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else:
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return HttpResponse("账号密码错误！")
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else:
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return HttpResponse("请输入正确的账号和密码！")
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def toregister_view(request):
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return render(request, 'register.html')
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# #点击注册后做的逻辑判断
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def register_view(request):
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u = request.POST.get("user", '')
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p = request.POST.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 HttpResponse("注册成功")
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else:
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return HttpResponse("请输入完整的账号和密码！")
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#导入excel
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# 上传学生名单的视图
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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 redirect('roll_call') # 完成后重定向到点名页面
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else:
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form = UploadFileForm()
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return render(request, 'upload_students.html', {'form': form}) # 渲染上传页面
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# 开始点名的视图
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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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selected_student = None # 初始化被选中的学生
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# 当教师点击“开始点名”按钮时
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if request.method == 'POST' and 'start_roll_call' in request.POST:
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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 + 1) 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 redirect('confirm_roll_call') # 跳转到确认点名页面
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return render(request, 'roll_call.html', {'selected_student': selected_student}) # 渲染点名页面
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# 确认点名的视图
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# def confirm_roll_call(request):
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# # 从 session 中获取被点名的学生
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# student_id = request.session.get('selected_student_id')
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# student = get_object_or_404(Student, student_id=student_id)
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#
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# if request.method == 'POST':
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# # 学生是否到课
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# if 'attended' in request.POST: # 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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#
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# # 处理是否准确重复问题
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# if request.POST['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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#
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# # 处理回答问题的准确性（0-3分）
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# answer_accuracy = float(request.POST.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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#
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# student.save() # 保存更新后的学生信息
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# return redirect('roll_call') # 返回点名页面，进行下一轮点名
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#
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# return render(request, 'confirm_roll_call.html', {'student': student}) # 渲染确认点名页面
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def confirm_roll_call(request):
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student_id = request.session.get('selected_student_id')
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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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if request.method == 'POST':
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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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# 如果被点名次数是3的倍数，赋予保护权，自动加2分
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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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if 'attended' in request.POST: # 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 request.POST['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(request.POST.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 redirect('roll_call') # 返回点名页面，进行下一轮点名
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return render(request, 'confirm_roll_call.html', {'student': student, 'protection_awarded': protection_awarded}) # 渲染确认点名页面
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# 积分排行榜
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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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return render(request, 'leaderboard.html', {'students': students}) |
