bootstrap select2插件用ajax来获取和显示数据的实例

<div class="form-group" style='display:none;' id='preParamGroup'>
	<label for="inputEmail3" class="col-sm-2 control-label">预定义参数</label>
	<div class="col-sm-8">
	<select class="js-states form-control" id="preParamDefine" multiple="multiple" style="width: 100%"></select>
	</div>
</div>

$("#preParamDefine").select2({
	 //data: data,
	placeholder:'请选择',//默认文字提示
	tags: true,//允许手动添加
 	allowClear: true,//允许清空	 
	ajax: {
	url: '/jgwork/param_select',
	type:'GET',
	dataType: 'json',
	data: function(){ return {'projectId':$('#projectSel').val()}},
	processResults: function (data) {
	 return {
	 results: data.result
	 };
	 }
	}
	 
})

data = [
{ 'text': 'enhancement' ,
 'children':[
 { 'id': 1, 'text': 'bug','parent':'enhancement' }, 
 { 'id': 2, 'text': 'duplicate' ,'parent':'enhancement'},
 { 'id': 3, 'text': 'invalid' ,'parent':'enhancement'},
 { 'id': 4, 'text': 'wontfix' ,'parent':'enhancement'}
 ]
}
]

proId = request.GET.get('projectId','')
paramList = [param.show_table() for param in paramDefine.objects.filter(proid = proId)]
data = []
index = 1
for item in paramList:
	childList = []
	for i in item['paramValue'].split(','):
	childList.append({
	'id': index,
	'text': i,
	'param': item['paramName']
	}) #生成children字段列表
	index += 1
	data.append({
	'text': item['paramName'],
	'children': childList
	})
return JsonResponse({'result':data})