Django实现jquery select2带搜索的下拉框

<script src="/static/jquery-3.4.1.js"></script>
<!-- 最新版本的 Bootstrap 核心 CSS 文件 -->
<link rel="stylesheet" href="/static/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
 
<!-- 可选的 Bootstrap 主题文件（一般不用引入） -->
<link href="//cdnjs.cloudflare.com/ajax/libs/select2/4.0.0-rc.1/css/select2.min.css" rel="stylesheet" />
 
<!-- 最新的 Bootstrap 核心 JavaScript 文件 -->
<script src="/static/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.0-rc.1/js/select2.min.js"></script>

<select id="user_list" name="user_list" style="width:30%" >
 <option value="">请选择系统-------</option>
 </select>

<script>
$('#user_list').select2({
 minimumInputLength: 3,
 ajax:
  {
url: "/deviceman/ajax_get_user_list",
dataType: 'json',
type: 'GET',
delay: 250,
data: function (params) {
return {
search: params.term,
  }
  },
 
processResults: function (data) {
return {
results: data
  };
 },
 
cache: true
  },
 
});
 
</script>

def ajax_get_user_list(request):
 """
 AJAX数据源视图-系统模块
 """
 start = int(request.GET.get('iDisplayStart', '0'))
 length = int(request.GET.get('iDisplayLength', '30'))
 search = request.GET.get('search', '')
 current_office=request.session.get('officename')
 #取得前台控件输入的关键字
 if search:
 #截取查询结果对象，以start开始截取start+length位
  orgs = user_list.objects.filter((Q(full_name__icontains=search) | Q ( email_address__icontains=search))&Q(dept_list__dept_name__icontains=current_office)).values('id').annotate(text=F('full_name')).exclude(user_status='inactive')
 else:
  orgs = user_list.objects.all().values('id').annotate(text=F('full_name'))
 
 # val_list = []
 # for org in orgs:
 #  val_list.append({'id': org.id, 'text': org.full_name})
 #  #根据关键字查询得到结果后开始拼装返回到前台的数据。先生成字典型数组，一般SELECT2组件使用的话生成id、text两个字段即可
 ret=list(orgs)
 result = json.dumps(ret)
 return HttpResponse(result)