一,写在最开始:ajax分页的原理,是利用了js的ajax执行请求,获取分页list和分页page 【代码块】,去替换页面显示数据的【代码块】
技术:js的ajax + TP3.2的fetch("Index/data")技术,仅此而已。
1、在LibraryThink 目录下直接加入以下代码:Ajaxpage.class.php
<?php /** * ajax分页类,有namespace,使用方法: * 控制器直接$ajaxpage = new ThinkAjaxpage($p1,$p2,$p3); * @param unknowtype * @return return_type * @author xzz 2018年4月27日上午8:49:19 */ namespace Think; class Ajaxpage { // 分页栏每页显示的页数 public $rollPage = 5; // 页数跳转时要带的参数 public $parameter ; // 默认列表每页显示行数 public $listRows = 20; // 起始行数 public $firstRow ; // 分页总页面数 protected $totalPages ; // 总行数 protected $totalRows ; // 当前页数 protected $nowPage ; // 分页的栏的总页数 protected $coolPages ; // 分页显示定制 protected $config = array('header'=>'条记录','prev'=>'上一页','next'=>'下一页','first'=>'第一页','last'=>'最后一页','theme'=>' %totalRow% %header% %nowPage%/%totalPage% 页 %upPage% %downPage% %first% %prePage% %linkPage% %nextPage% %end%'); // 默认分页变量名 protected $varPage; public function __construct($totalRows,$listRows='',$ajax_func,$parameter='') { $this->totalRows = $totalRows; $this->ajax_func = $ajax_func; $this->parameter = $parameter; $this->varPage = 'p' ; if(!empty($listRows)) { $this->listRows = intval($listRows); } $this->totalPages = ceil($this->totalRows/$this->listRows); //总页数 $this->coolPages = ceil($this->totalPages/$this->rollPage); $this->nowPage = !empty($_GET[$this->varPage])?intval($_GET[$this->varPage]):1; if(!empty($this->totalPages) && $this->nowPage>$this->totalPages) { $this->nowPage = $this->totalPages; } $this->firstRow = $this->listRows*($this->nowPage-1); } public function nowpage($totalRows,$listRows='',$ajax_func,$parameter='') { $this->totalRows = $totalRows; $this->ajax_func = $ajax_func; $this->parameter = $parameter; $this->varPage = 'p' ; if(!empty($listRows)) { $this->listRows = intval($listRows); } $this->totalPages = ceil($this->totalRows/$this->listRows); //总页数 $this->coolPages = ceil($this->totalPages/$this->rollPage); $this->nowPage = !empty($_GET[$this->varPage])?intval($_GET[$this->varPage]):1; if(!empty($this->totalPages) && $this->nowPage>$this->totalPages) { $this->nowPage = $this->totalPages; } $this->firstRow = $this->listRows*($this->nowPage-1); return $this->nowPage; } public function setConfig($name,$value) { if(isset($this->config[$name])) { $this->config[$name] = $value; } } public function show() { if(0 == $this->totalRows) return ''; $p = $this->varPage; $nowCoolPage = ceil($this->nowPage/$this->rollPage); $url = $_SERVER['REQUEST_URI'].(strpos($_SERVER['REQUEST_URI'],'?')?'':"?").$this->parameter; $parse = parse_url($url); if(isset($parse['query'])) { parse_str($parse['query'],$params); unset($params[$p]); $url = $parse['path'].'?'.http_build_query($params); } //上下翻页字符串 $upRow = $this->nowPage-1; $downRow = $this->nowPage+1; if ($upRow>0){ $upPage="<a class='ajaxify' id='big' href='JavaScript:".$this->ajax_func."(".$upRow.")'>".$this->config['prev']."</a>"; }else{ $upPage=""; } if ($downRow <= $this->totalPages){ $downPage="<a class='ajaxify' id='big' href='javascript:".$this->ajax_func."(".$downRow.")'>".$this->config['next']."</a>"; }else{ $downPage=""; } // << < > >> if($nowCoolPage == 1){ $theFirst = ""; $prePage = ""; }else{ $preRow = $this->nowPage-$this->rollPage; $prePage = "<a class='ajaxify' id='big' href='javascript:".$this->ajax_func."(".$preRow.")'>上".$this->rollPage."页</a>"; $theFirst = "<a class='ajaxify' id='big' href='javascript:".$this->ajax_func."(1)' >".$this->config['first']."</a>"; } if($nowCoolPage == $this->coolPages){ $nextPage = ""; $theEnd=""; }else{ $nextRow = $this->nowPage+$this->rollPage; $theEndRow = $this->totalPages; $nextPage = "<a class='ajaxify' id='big' href='javascript:".$this->ajax_func."(".$nextRow.")' >下".$this->rollPage."页</a>"; $theEnd = "<a class='ajaxify' id='big' href='javascript:".$this->ajax_func."(".$theEndRow.")' >".$this->config['last']."</a>"; } // 1 2 3 4 5 $linkPage = ""; for($i=1;$i<=$this->rollPage;$i++){ $page=($nowCoolPage-1)*$this->rollPage+$i; if($page!=$this->nowPage){ if($page<=$this->totalPages){ $linkPage .= " <a class='ajaxify' id='big' href='javascript:".$this->ajax_func."(".$page.")'> ".$page." </a>"; }else{ break; } }else{ if($this->totalPages != 1){ $linkPage .= " <span class='current'>".$page."</span>"; } } } $pageStr = str_replace( array('%header%','%nowPage%','%totalRow%','%totalPage%','%upPage%','%downPage%','%first%','%prePage%','%linkPage%','%nextPage%','%end%'), array($this->config['header'],$this->nowPage,$this->totalRows,$this->totalPages,$upPage,$downPage,$theFirst,$prePage,$linkPage,$nextPage,$theEnd),$this->config['theme']); return $pageStr; } } ?>
2、TP3.2的控制器中:ajax_action 是ajax请求的路由,action是页面请求的路由。我们直接访问action
/** * 用户行为列表,自定义的ajax分页,使用方式不应该是页面访问, * 而应该是js的onload完成进行ajax初始化访问 * @author xuzhengzong 2018/04/28 */ public function ajax_action($model='Action'){ //获取列表数据 //统计要查询数据的数量 $page_size = 10; //评论固定10条 $page = intval($_REQUEST['p']); $id = intval($_REQUEST['id']); if(empty($page))$page = 1; $limit = (($page-1)*$page_size).",".$page_size ; //让分页支持多条件查询 -- xuzhengzong 2018/04/28 $where['status'] = array('gt',-1); //$_REQURST['cond'] && $where['cond'] = $_REQURST['cond']; //多条件查询判断 $list = M($model)->where($where)->order('id desc')->limit($limit)->select(); $count[0]['count'] = M($model)->where($where)->count("*"); //end $param = ''; //$map['status'] = array('gt',1); $Page = new ThinkAjaxpage($count[0]['count'],$page_size, index,$param);// 实例化分页类 传入总记录数和每页显示的记录数(25) $show = $Page->show();// 分页显示输出 foreach($list as $k=>$v){ $list[$k]['status_text'] = $v['type']==1?'启用':'禁用'; } $this->assign('_page',$show); $this->assign('_list', $list); $html['content'] = $this->fetch('Ajax/action'); $this->ajaxReturn($html); } /** * 用户行为列表 * @author */ public function action(){ //获取列表数据 $Action = M('Action')->where(array('status'=>array('gt',-1))); $this->meta_title = '用户行为'; $this->display(); }
3、html && js:下面代码我们知道,页面document加载完,执行index(1)的方法请求第一个页面的数据list和page分页
<!-- 数据列表+ajax分页 --> <div id="list" class="list"> </div> <script type="text/javascript"> /* 初始化加载action_ajax分页数据 --xuzhengzong 2018/04/28 */ var init_id = 1; index(init_id); //初始化页面 init_id==1 function index(id){ var id = id; //把数据传递到要替换的控制器方法中 $.ajax({ url:'/index.php/Admin/User/ajax_action', type:"GET", async:false, dataType:"JSON", //data:{'p':id,'id':deal_id}, data:{'p':id}, success:function(data){ $("#list").replaceWith(data.content); //html块替换html的div }, error:function(data){ console.log("4:ajax not run~"); } }); } </script>
4、核心:上面【data.content】,是加载下面的Ajax/action.html进行替换的。
Ajax/action.html:
<div id="list" class="list"> <!-- 用户行为ajax分页示例demo页面 --> <div class="data-table" id="data-table"> <table class=""> <thead> <tr> <th class="row-selected row-selected"><input class="check-all" type="checkbox"/></th> <th class="">编号</th> <th class="">标识</th> <th class="">名称</th> <th class="">类型</th> <th class="">规则</th> <th class="">状态</th> <th class="">操作</th> </tr> </thead> <tbody> <volist name="_list" id="vo"> <tr> <td><input class="ids" type="checkbox" name="ids[]" value="{$vo.id}" /></td> <td>{$vo.id} </td> <td>{$vo.name}</td> <td><a href="{:U('editAction?id='.$vo['id'])}">{$vo.title}</a></td> <td><span>{:get_action_type($vo['type'])}</span></td> <td>{$vo.remark}</td> <td>{$vo.status_text}</td> <td><a href="{:U('User/editAction?id='.$vo['id'])}">编辑</a> <a href="{:U('User/setStatus?Model=action&ids='.$vo['id'].'&status='.abs(1-$vo['status']))}" class="ajax-get">{$vo.status|show_status_op}</a> <a href="{:U('User/setStatus?Model=action&status=-1&ids='.$vo['id'])}" class="confirm ajax-get">删除</a> </td> </tr> </volist> </tbody> </table> </div> <!-- 分页 --> <div class="page">{$_page}</div> <!-- /分页 --> </div>
5、重点讲解 为什么 要存在Ajax/action.html文件
我们知道TP3.2的display()是输出模板,而fetch()是接手模板,但是不渲染。 完了,还没看明白自行查看TP的fetch()方法。
6、效果: 路由没带p参数,跳转到第二页咯。