如何在Django中获取for循环生成的所有用户输入值

问题根因 #

• 前端所有输入框name属性重复，且未和对应部门ID做关联，无法区分输入值所属的部门记录
• 后端读取POST参数的key（BUID、GBUID）和前端输入框定义的name属性（value1、value2）完全不匹配，无法读取到正确的提交值
• 缺少完整的<form>标签包裹提交内容，也没有添加Django POST请求必填的CSRF token，请求会被默认拦截

修复后的模板代码 #

<form method="post">
    {% csrf_token %}
    <input type="submit" value="Submit" >

    {% for department in departments %}
    <!-- 隐藏域传递当前循环的部门ID，保证值和部门一一对应 -->
    <input type="hidden" name="department_ids[]" value="{{ department.id }}">
    <div class="row">
      <div class="col-sm-3">
      <label>value1</label>
        <input name="value1[]" class="form-control" />
      </div>
    </div>
    <br />
    <div class="row">
      <div class="col-sm-3">
      <label>value2</label>
        <input name="value2[]" class="form-control" />
      </div>
    </div>
    {% endfor %}
</form>

修复后的views.py代码 #

def department(request):
    departments = Department.objects.all()
    # 仅处理POST提交请求
    if request.method == "POST":
        # 按模板渲染顺序获取所有部门ID、value1、value2，三者顺序完全对应
        department_ids = request.POST.getlist('department_ids[]')
        value1_list = request.POST.getlist('value1[]')
        value2_list = request.POST.getlist('value2[]')
        
        # 遍历匹配更新对应部门记录
        for dept_id, v1, v2 in zip(department_ids, value1_list, value2_list):
            Department.objects.filter(id=dept_id).update(value1=v1, value2=v2)
            # 验证输出
            print(f"部门ID{dept_id}更新成功：value1={v1}，value2={v2}")

    context = {'departments': departments}
    return render(request, 'employee/department.html', context)

内容的提问来源于stack exchange，提问作者Mouffaq Dalloul