class Interview(models.Model):
  department = models.ForeignKey('departments.Department', related_name='interview',
                  on_delete=models.PROTECT, default=get_department, verbose_name='面试部门')
 
def get_department():
  department = Department.objects.get(name='管理部')
  return department.id

class Interview(models.Model):
  hruser = models.ForeignKey(HrUser, related_name='interview', on_delete=models.PROTECT, verbose_name='姓名')
  department = models.ForeignKey('departments.Department', related_name='interview', on_delete=models.PROTECT, verbose_name='面试部门')
  creator = models.ForeignKey(settings.AUTH_USER_MODEL, related_name='creator', on_delete=models.PROTECT, verbose_name='创建者')
 
@register(Interview)
class InterviewAdmin(InterviewSrv):
  list_display = ('hruser', 'status', 'department', 'creator', ...)
  list_per_page = 50
  ...
  # 需要重写instance_forms方法，此方法作用是生成表单实例
  def instance_forms(self):
    super().instance_forms()
    # 判断是否为新建操作，新建操作才会设置creator的默认值
    if not self.org_obj:
      self.form_obj.initial['creator'] = self.request.user.id

<form method="post" enctype="multipart/form-data"">
 <input id="subject" type="text" class="form-control" >
 <input id="excels" type="file">
 <select class="form-control" id="models">
 <option>model0</option>
 <option>model1</option>
 </select>
 <input id="con" type="file">
 <input type="button" id="showyulan" value="上传">
</form>

$('#showyulan').click(function () {
    var formData = new FormData();
    formData.append('subject', $('#subject').val())
    formData.append('excels', document.getElementById("excels").files[0])
    formData.append('models', $('#models').val())
    formData.append('con', document.getElementById("con").files[0])
    formData.append('qunfasum', $('#qunfasum').val())
    formData.append('jiange', $('#jiange').val())
    formData.append('yuming', $('#yuming').val())
    formData.append('duankou', $('#duankou').val())

    $.ajax({
        url:"/showyulan/",
        type:"POST",
        data:formData,
        processData:false,
        contentType:false,
        success: function (data) {
          alert(data)
        }
    })
  })

def showyulan(request):
  subject = request.POST.get('subject')

  f1 = request.FILES.get('excels')
  
  # 文件保存路径
  fname = '%s/excel/%s' % (settings.MEDIA_ROOT, f1.name)
  with open(fname, 'wb') as pic:
    for c in f1.chunks():
      pic.write(c)

  models = request.POST.get('models')

  f2 = request.FILES.get('con')
  
  # 文件保存路径
  fname = '%s/text/%s' % (settings.MEDIA_ROOT, f2.name)
  with open(fname, 'wb') as pic:
    for c in f2.chunks():
      pic.write(c)
      
  return HttpResponse('上传成功！')