How to implement list paging function using PHP

We know that when using thinkPHP framework to do projects, we often encounter paging the contents of the list, because the thinkPHP framework comes with paging function, but There is a flaw. Every time you return data to the page, you need to reload the JS, CSS and other resources required by the page, which greatly increases the traffic pressure. Today I will teach you how to implement the return list paging function without repeatedly loading the page.

2. Paging process

Process description:

1) Investigate the function in App.php, which calls the fetch function. The fetch function renders list.html.
2) list.html calls the function to get the total number of pages and gets the total number of pages.
3) Get the first page of data.
4) Initialize the laypage paging plug-in.
5) Click on the page number to trigger paging query.

3. Code related to implementing paging function

1. App.php Controller code

   
//fetch渲染页面
public function index()
{
 return $this->fetch('list');
} 
 //根据页面传入的页码查询数据
 public function getPage()
 {
    
   // 获取页面传入的页码      
   $nowpage = input("page");
   //每页显示10条数据
   $limits = 10;
  
   $app = new appInfo();
   $page_info = $app->limit(($nowpage * $limits), $limits)->select();
  
   // ajax 分页输出
   $info = ['pageinfo'=>$page_info,'nowpage'=>$nowpage,'nowpage'=>$nowpage];
  
  return json($info);
  
  
 }
  
  
 //获取所有页数
public function getAllPage(){
  
 try{
  $count = appInfo::count();
  
  $limits = 10;
  // 计算总页面
  $allpage = ceil($count / $limits);
  
  $info =['allpage'=>$allpage];
 }catch (\Exception $e){
  abort(500,$e->getMessage(),['result'=>TopsecGWErrer::TOPSEC_GW_ERR_NO_UNKNOWN]);
 }
  
 return json($info);
}

2. The html code in list.html

  

   

   

    
应用名称
    
应用类型
    
应用图像
    
创建日期
    
修改日期
    
操作
   
   
   

   

  
   
  
  

  

   
    丨添加应用
   
  
  
 
  

  
   
    丨添加图片
   
  
  
  
 

3. The jQuery code in list.html

//pageCount：总页数。用于初始化laypage分页控件。
//pageIndex：初始化当前页。显示第一页。
//currentPage：当前页数。
//getPageData:获取每页数据的函数。
//url:获取每页数据的方法的路径。由控制器和函数名组成。
 function jsonPage(pageCount, pageIndex,currentPage, getPageData,url) {
  var laypageindex = laypage({
   cont: 'result', //容器。值支持id名、原生dom对象，jquery对象。
   skin: '#3c8dbc',
   pages: pageCount, //通过后台拿到的总页数
   curr: pageIndex, //初始化当前页
   prev: '上一页', //若不显示，设置false即可
   next: '下一页', //若不显示，设置false即可
   skip: true, //是否开启跳页
   jump: function (obj, first) { //触发分页后的回调
    //getPageData(1);
    if (!first) { //点击跳页触发函数自身，并传递当前页：obj.curr
     getPageData(url,obj.curr);
     currentPage = obj.curr;
    }
   }
  });
 }
  
  
/url:获取总页数据的方法的路径。由控制器和函数名组成。 
 function getAllpage(url){
  
  var tmp ;
  $.ajax({
   type: "GET",
   dataType: "json",
   async: false,
   url: PUBLIC_BASE+url,
   success: function(json) {
    var data = eval(json);
    tmp=data.allpage;
   },
   error: function(json) {
  
   }
  
  });
  return tmp;
  
 }
  
 //data:每页的数据。由JSON对象组成。
 function instantiation(data) {
  //begin $.each
  $.each(data.pageinfo, function (index, item) {
   $("#table_body").append($('')
    .append($("").html(item.name))
    .append($("").html(item.desc))
    .append($("").html(""))
    .append($("").html(item.create_time))
    .append($("").html(item.update_time))
    .append(
     $("")
      .append($("查看丨 "))
      .append($("编辑丨 "))
      .append($("删除丨 "))
      .append($("禁用"))
  
    )
  
   );
  
   $("#view"+item.id).click(function() {
    fillMainContent("/application/application?model=view&id="+item.id);
   })
  
   $("#edit"+item.id).click(function() {
    fillMainContent("/application/application?model=edit&id="+item.id);
   })
  
   $("#delete"+item.id).click(function() {
  
    deleteApp(item.id);
    alert("删除成功");
  
   })
  
   $("#forbid"+item.id).click(function() {
    deleteApp(item.id);
    alert("删除成功");
    getPageData(currentPage);
   })
  
  });
  //end $.each
    
 } 
 //获取每页的数据。curr:页码 ，curl:获取数据的路径。
 function getPageData(url,curr) {
  curr = curr-1;
  $.ajax({
  
   type: "GET",
   dataType: "json",
   data: {page:curr},
   url: PUBLIC_BASE+url,
   success: function(json) {
    $('#table_body').empty();
    var data = eval(json);
    console.log(data);
  
    instantiation(data);
   },
  
   error: function(json) {
  
    var data = eval(json);
    console.log(data);
  
   }
  
  });
  
 }
  
 //调用函数实现分页
//获取总页数，用于初始化分页控件总页数
 pageCount= getAllpage("/application/getAllPage");
 //获取第一页数据
 getPageData("/application/getpage",1);
 //初始化分页控件并分页
 jsonPage(pageCount,pageIndex,currentPage,getPageData,"/application/getpage");

I believe you have mastered the methods after reading these cases. For more exciting information, please pay attention to other related articles on the php Chinese website!

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