项目中遇到的多条件异步查询及数据分页问题，做了数次尝试，最终虽目的达到，略有繁琐，希望能有更好的处理方式
基于 tp框架
1、html页面代码
<div class="h_cityName1">
<div class="h_cityName11">
<span>省</span>
<ul class="h_publicB" id="province_id" name="province_id" >
<volist name="list" id="vo">
<if condition="$areaId eq $vo.areaId">
<li value="{$vo.areaId}" onclick="sendData(this,'province_id')" >{$vo.areaName}</li>
<else />
<li value="{$vo.areaId}" onclick="sendData(this,'province_id')" >{$vo.areaName}</li>
</if>
</volist>
</ul>
</div>
<div class="h_cityName11 h_cityList">
<span>市</span>
<ul class="h_publicB" id="city_id" name="city_id">
</ul>
</div>
<div class="h_cityName11 h_areaList" >
<span>区</span>
<ul class="h_publicB" id="area_id" name="area_id">
</ul>
</div>
</div>
<div class="hangye"><b>行业</b></div>
<ul>
<volist name="industry" id="industry">
<li value="" onclick="sendData(this,'industry')" name="{$idfrom_home}" ><span >{$industry.name}</span></li>
</volist>
</ul>
</div>
<div class="search3">
<input type="text" name="" id="companyname" value="" placeholder="搜索企业/商户名称"/>
<a href="#"><input type="submit" class="but1" id="s-by-c" onclick="sendData(this,'companyname')" value="" /></a>
</div>
<div class="zongmu-lbbu" id="companylist">
<volist name="company" id="vo">
<div class="recommend-logo" >
<div class="fl1">
<a href="{:U('Home/Company/detail?id='.$vo['id'])}">
<img src="{$uploads}{$vo.logo}" class="fl-img"/>
<p>{$vo.name}</p>
<span class="span-add">{$vo.addreess}</span>
<img src="{$home_img}qiyezongmu_03.png" class="middle-img"/><span class="span-xx">{$vo.linkman}</span>
<img src="{$home_img}qiyezongmu2_06.png" class="middle-img"/><span class="span-xx">{$vo.linktel}</span>
<img src="{$home_img}qiyezongmu2_03.png" class="middle-img"/><span class="span-xx"> {$vo.qqnum}</span>
</a>
</div>
<div class="fl2">
<h3>公司主营</h3>
<p>{$vo.des}</p>
</div>
</div>
</volist>
</div>
<div class="page" id="page">
<if condition="$arr['count'] neq 0 ">
<span>共<b>{$arr.count}</b>条记录，{$arr.p}/{$arr.Page}页</span>
{$arr.show}
<else />
<center><b>暂无数据</b></center>
</if>
</div>
2、jquery & ajax
<script type="text/javascript">
/*
*区域(点击省获取区,点击区获取县)
*/
function sendData(data,type){
var data1=data.value;
var name=$(data).attr('name');
var companyname=$("#companyname").val();
var data2 =$(data).parent().attr("id");
var aa = $(data).text();
$(data).addClass('selectPublicA').siblings().removeClass()
/*ajax post提交返回区域列表 */
$.ajax({
url:"{:U('Home/Company/ajaxarea')}",
data:{data:data1,type:type},
type:"post",
dataType:"json",
success:function(msg){
console.log(msg)
if(type == 'province_id'){
var html ='';
$('#city_id').empty();
$('#area_id').empty();
for(var i=0;i<msg.length;i++){
html += "<li value='"+msg[i].areaId+"' onclick='sendData(this,\"city_id\")'>"+msg[i].areaName+"</li>";
}
$(html).appendTo($("#city_id"));
}else if(type == 'city_id'){
$("#area_id").parent().css("display","block");
var html ='';
$('#area_id').empty();
for(var i=0;i<msg.length;i++){
html += "<li value='"+msg[i].areaId+"' onclick='sendData(this,\"area_id\")'>"+msg[i].areaName+"</li>"
}
$(html).appendTo($("#area_id"));
}
}
})
$.ajax({
url:"{:U('Home/Company/index')}",
data:{data:data1,type:type,name:name,companyname:companyname},
type:"post",
dataType:"json",
success:function(msg){
console.log(msg)
var html="";
var company=msg.rows;
var url=msg.url;
$('#page').empty();
$("#companylist").empty();
if(company != null){
for(var i=0;i<company.length;i++){
html += "<div class='recommend-logo' >"
html += "<div class='fl1'><a href='"+url[i]+"'><img src='{$uploads}"+company[i].logo+"' class='fl-img'/><p>"+company[i].name+"</p>"
html += "<span class='span-add'>"+company[i].addreess+"</span>"
html += "<img src='{$home_img}qiyezongmu_03.png' class='middle-img'/><span class='span-xx'>"+company[i].linkman+"</span>"
html += "<img src='{$home_img}qiyezongmu2_06.png' class='middle-img'/><span class='span-xx'>"+company[i].linktel+"</span>"
html += "<img src='{$home_img}qiyezongmu2_03.png' class='middle-img'/><span class='span-xx'>"+company[i].qqnum+"</span></a></div>"
html += "<div class='fl2'><h3>公司主营</h3><p>"+company[i].des+"</p></div></div>"
}
}
$(html).appendTo("#companylist");
var htmlpage="<span id='page'>共<b>"+msg.count+"</b>条记录，"+msg.p+"/"+msg.Page+"页"+msg.show+"</span>";
$(htmlpage).appendTo($("#page"));
}
})
}
</script>
3、PHP 页面
public function index(){
$p = I('request.p');//获取点击分页的页数
$paging = $p<1?1:$p;
//==============================接收AJAX/GET传参===============//
$areaId=I('request.data');
$industryId=I('request.name');
$type=I('request.type');
$companyname=I('request.companyname');
//==============================接收AJAX/GET传参===============//
//==============================查询条件=====================//
$map = array('data' => $areaId,'type'=>$type,'name'=>$industryId,'companyname'=>$companyname);
$order='';
if(IS_AJAX){
if($areaId>0){//若点击省市区 该条件写入session
$_SESSION['areaId']=$areaId;
$_SESSION['type']=$type;
}
if($industryId >0){//若点击行业 该条件写入session
$_SESSION['industryId']=$industryId;
}
if($type == 'industry'){//若点击行业 调用session地区条件
$areaId=$_SESSION['areaId'];
$type=$_SESSION['type'];
}
if($type == 'companyname'){//若输入企业名查询 调用session 地区、行业条件
$areaId=$_SESSION['areaId'];
$industryId=$_SESSION['industryId'];
$type=$_SESSION['type'];
}
$where= $this->get_where($areaId,$type,$industryId,$companyname);
}else{
//刷新页面时清除session中条件
$_SESSION['areaId']="";
$_SESSION['type']='';
$_SESSION['industryId']='';
$where = 'ischeck = 1';
$where .=" AND ".$this->get_where($areaId,$type,$industryId,$goodsname);
}
//==============================查询条件=====================//
//==============================查询数据=====================//
$list = D('Areas','Api')->getareas(100,1,'*','`parentId`=0');//所有地区列表
$industry = D('Industry','Api')->getindustry(1000,1,'*','`status`=1 AND `isdelete`=1');//行业信息
$arr=$this->getData_page('Company',3,'*',$where,$order,$map);
//==============================查询数据=====================//
$arr['p']=$paging;
$company=$arr['rows'];
if(IS_AJAX){
echo json_encode($arr);
}else{
$this->assign('areaId',$areaId);
$this->assign('industryId',$industryId);
$this->assign('company',$company);
$this->assign('arr',$arr);
$this->assign('list',$list['tag']);
$this->assign('industry',$industry['tag']);//需求列表
$this->display();
}
}
/*
* ajax区域联动
*/
public function ajaxarea(){
$data['parentId']=$_POST['data'];
if($_POST['type'] == 'province_id'){
$list =D('Areas')->getarea($data);
echo json_encode($list);
}else if($_POST['type'] == 'city_id'){
$list =D('Areas')->getarea($data);
echo json_encode($list);
}
}
/**
*查询条件处理函数
*/
public function get_where($areaId='',$type='',$industryId='',$companyname=''){
$where = "1=1";//初始化where变量
if ( $areaId > 0){
$where .=" AND {$type}={$areaId}";
}
if ($industryId >0){
$where .= " AND industry_id={$industryId}";
}
if ('' != $companyname){
$where .=" AND `name` LIKE '%{$companyname}%'";
}
return $where;
}
/**
*查询分页数据
*$model 模型名也可视为数据表名
*/
public function getData_page($model,$num='',$field='',$where='',$order ='',$map=''){
$Model =M($model);
$num = ($num != '') ? $num : '10';
$field = ($field != '') ? $field : '*';
if (!empty($field)){
$Model->field($field);
} else {
$Model->field('*');
}
if (!empty($where)){
$Model->where($where);
}
if (!empty($order)){
$Model->order($order);
}else{
unset($order);
}
$count =$Model->where($where)->count();
if (!empty($field)){
$Model->field($field);
} else {
$Model->field('*');
}
if (!empty($where)){
$Model->where($where);
}
if (!empty($order)){
$Model->order($order);
}
$Page = new \Think\Page($count,$num);
$Page->setConfig('prev','上一页');
$Page->setConfig('next','下一页');
$Page->setConfig("last",'尾页');
$Page->setConfig('first','首页');
$Page->rollPage = '5';
//TP分页方法 $show 中url 拼接条件参数 点击分页条 除了传P 也会传查询条件参数
foreach($map as $key=>$val) {
$Page->parameter[$key] = urlencode($val);
}
$show = $Page->show();
$offset = $Page->firstRow.','.$Page->listRows;
$Model->limit($offset);
$rows = $Model->select();
$pagetotal =ceil($Page->totalRows/$num);
$pagetotal<1 ? 1:$pagetotal;
$arr =array('count'=>"$count",'Page'=>"$pagetotal",'show'=>"$show",'rows'=>$rows);
return $arr;
}
总结：ajax获取条件参数提交给 php，php分情况存SESSION,以保证下个条件查询时拥有之前的条件；分页部分利用tp自带分页查询，在此基础上 将ajax提交的参数拼接到每次点击分页后的URL 再通过get获取即可实现异步查询后的数据分页