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thinkphp implements unlimited classification (using recursion)_javascript skills
thinkphp implements unlimited classification (using recursion)_javascript skills
The example in this article shares with you the detailed code of thinkphp to implement infinite classification. I hope it will inspire everyone to learn infinite classification.
Database: test
Data table: (tp_category):
Common/conf/config.php
'DB_CONFIG2' => array( 'db_type' => 'mysql', 'db_user' => 'root', 'db_pwd' => '', 'db_host' => 'localhost', 'db_port' => '3306', 'db_name' => 'test', 'DB_PREFIX' => 'tp_', // 数据库表前缀 'DB_CHARSET'=> 'utf8', // 字符集 'DB_DEBUG' => TRUE, // 数据库调试模式 开启后可以记录SQL日志 3.2.3新增 ),
Common/function.php traverse function loop
/*
* 递归遍历
* @param $data array
* @param $id int
* return array
* */
function recursion($data, $id=0) {
$list = array();
foreach($data as $v) {
if($v['pid'] == $id) {
$v['son'] = recursion($data, $v['id']);
if(empty($v['son'])) {
unset($v['son']);
}
array_push($list, $v);
}
}
return $list;
}
Controller/IndexController.class.php
public function test() {
$category = M('category', '', C('DB_CONFIG2'))->select();
$result = loop($category);
var_dump($result);
$this->assign('list', $result);
$this->display();
}
Output in the template (View/Index/test.html) (only supports level 2 classification. If you want to display all, it is recommended to convert the array into JSON format first, and then request through AJAX and generate JS)
<ul>
<volist name="list" id="vo">
<li>
{$vo.category}
<notempty name="vo['children']">
<ul>
<volist name="vo['children']" id="cate">
<li>{$cate.category}</li>
</volist>
</ul>
</notempty>
</li>
</volist>
</ul>
Follow-up (ajax request, recursively display all categories):
Method Controller/IndexController.class.php
public function test() {
$this->display();
}
public function resultCategory() {
$category = M('category', '', C('DB_CONFIG2'))->select();
$result = loop($category);
$this->ajaxReturn(array('data'=>$result,'status'=>'1','info'=>'获取列表成功'));
}
Template View/Index/test.html
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>分类测试</title>
<script src="__PUBLIC__/js/jquery.min.js"></script>
</head>
<body>
<ul id="menu"></ul>
<script>
$(function() {
// 递归列表函数
function recursion(selector,data)
{
if(!data) return false;
for(var i=0;i<data.length;i++)
{
var li=$('<li>'+data[i]['category']+'</li>');
if(data[i]['children'] && data[i]['children'].length>0)
{
var ul=$('<ul></ul>');
recursion(ul,data[i]['children']);
li.append(ul);
}
selector.append(li);
}
}
// ajax请求 用$.post() 会更方便
$.ajax({
url: "{:U('resultCategory')}",
type: 'post',
dataType: 'json',
error: function(res) {
console.log(res);
},
success: function(res) {
recursion($('#menu'),res['data']);
console.log(res['data']);
}
});
});
</script>
</body>
</html>
Another infinite classification:
/**
* 无限极分类
* @param [type] $cate [description]
* @param integer $pid [description]
* @param integer $level [description]
* @param string $html [description]
* @return [type] [description]
*/
function sortOut($cate,$pid=0,$level=0,$html='--'){
$tree = array();
foreach($cate as $v){
if($v['pid'] == $pid){
$v['level'] = $level + 1;
$v['html'] = str_repeat($html, $level);
$tree[] = $v;
$tree = array_merge($tree, sortOut($cate,$v['id'],$level+1,$html));
}
}
return $tree;
}
JS recursion (special):
This function is equivalent to implementing PHP’s str_repeat function
/* 字符串重复函数 */
if(!String.str_out_times) {
String.prototype.str_out_times = function(l) {
return new Array(l+1).join(this);
}
}
// 定位到当前选择
function recursion(selector, data, j, pid) {
var space = ' ┠ ';
if(!data) return false;
$.each(data, function(i, item) {
var opt = $('<option value="'+item.id+'">'+space.str_out_times(j)+item.name+'</option>');selector.append(opt);
if(item.son && (item.son).length>0) {
recursion(selector, item.son, ++j);
j=0;
}
});
// 当前是哪个分类
selector.find('option').each(function() {
if($(this).val() == pid) {
$(this).attr('selected', 'selected');
}
});
}
Why j=0. Because the execution order feels different from php, it is loaded from top to bottom. .
ajax request data:
$('.btn-edit').click(function() {
var id = $(this).data('id');
$.post("{:U('Article/editArticle')}", {id: id}, function(res) {
// 分类
$('[name="pid"]').html('');
recursion($('[name="pid"]'), res.sort, 0, res.pid);
$('[name="id"]').val(res.id);
$('[name="title"]').val(res.title);
$('[name="summary"]').val(res.summary);
$('#thumbnailImg').attr('src', "__UPLOAD__"+'/thumbnail/'+res.thumbnail);
ue.setContent(res.content);
$('#modal-edit').modal('show');
});
});
The above is how thinkphp implements unlimited classification. I hope it will be helpful to everyone's learning.
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