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})