一张表实现省市区三级联动【3409条数据】
public function index(){
$province = M('Tree')->where ( array('pid'=>1) )->select ();
$this->assign('province',$province);
$this->display();
}
public function getRegion(){
$Region=M("Tree");
$map['pid']=$_REQUEST["pid"];
$map['type']=$_REQUEST["type"];
$list=$Region->where($map)->select();
echo json_encode($list);
}function loadRegion(sel,type_id,selName,url){
jQuery("#"+selName+" option").each(function(){
jQuery(this).remove();
});
jQuery("").appendTo(jQuery("#"+selName));
if(jQuery("#"+sel).val()==0){
return;
}
jQuery.getJSON(url,{pid:jQuery("#"+sel).val(),type:type_id},
function(data){
if(data){
jQuery.each(data,function(idx,item){
jQuery("").appendTo(jQuery("#"+selName));
});
}else{
jQuery("").appendTo(jQuery("#"+selName));
}
}
);
}
DROP TABLE IF EXISTS `tp_tree`; CREATE TABLE `tp_tree` ( `id` int(5) unsigned NOT NULL AUTO_INCREMENT, `pid` int(5) unsigned NOT NULL DEFAULT '0', `name` varchar(120) DEFAULT NULL, `type` tinyint(1) DEFAULT '2', PRIMARY KEY (`id`) ) ENGINE=MyISAM AUTO_INCREMENT=3410 DEFAULT CHARSET=utf8;
