项目中的一些常用的知识点总结

1、对于删除的多个列表选项前台的传参

（用jquery方法获得多个选项的id）

//jQuery代码

$(function(){

    //给删除按钮添加点击事件

    $('#btndel').on('click',function(){

        //获取复选框的id值

        var id = $(':checkbox:checked');    //jQuery对象,类数组的对象

        var ids = '';   //要求ids的形式是 1,2,3,4,5

        for(var i = 0;i < id.length;i++){

            ids = ids + id[i].value + ',';

        }

        //剔除右边的逗号

        ids = ids.substring(0,ids.length-1);

        //跳转

        window.location.href = '__CONTROLLER__/del/ids/' + ids; //Tp框架中的写法

    });

    //给编辑按钮添加点击事件

    $('#btnedit').on('click',function(){

        //获取复选框的id值

        var id = $(':checkbox:checked').val();

        //跳转

        window.location.href = '__CONTROLLER__/edit/id/' + id;

    });

});

2、无限极分类

function getTree($list,$pid=0,$level=0) {
static $tree = array();
foreach($list as $row) {
if($row['pid']==$pid) {
$row['level'] = $level;
$tree[] = $row;
getTree($list, $row['id'], $level + 1);
}
}
return $tree;

}

3、在同一张表中查询父级的字段名

foreach ($data as $key => $value) {
#二次查询，通过查询pid所对应的数据信息，获取其中的name字段
$info = $model -> find($value['pid']);
#获取其中的name字段存到$data中去
$data[$key]['parentName'] = $info['name'];
}

4、多条件搜索框查询

$where = '2 > 1';
	if ($_POST) {
	if ($_POST['category']) {
	$where .= " AND category_id = '{$_POST['category']}'";
	}
	if ($_POST['status']) {
	$where .= " AND status = '{$_POST['status']}'";
	}
	if (isset($_POST['istop'])) {
	$where .= " AND top = '{$_POST['istop']}'";
	}
	if ($_POST['search']) {
	$where .= " AND title LIKE '%{$_POST['search']}%'";
	}
	}

/*
	$pager = new Pager(总的记录数, 每页记录数, 当前页数, 'php入口脚本index.php', array(参数
	'a' => 'index',
	'c' => 'product',
	));
	$pagerHtml = $pager->showPage();
	*/
	$page = isset($_GET['page']) ? $_GET['page'] : 1;
	$pageSize = 1;
	$pager = new Pager(ArticleModel::create()->count(), $pageSize, $page, 'index.php', array(
	'p' => 'backend',
	'c' => 'Article',
	'a' => 'getList',
	));
	// 获取分页按钮
	$pageButtons = $pager->showPage();
	$start = ($page - 1) * $pageSize;
	$articles = ArticleModel::create()->getAllWithJoin($where, 'id ASC', $start, $pageSize);
	$categories = CategoryModel::create()
	->limitlessLevelCategory(
	CategoryModel::create()->findAll()
	);
	$this->loadHtml('article/getList', array(
	'articles' => $articles,
	'categories' => $categories,
	'pageButtons' => $pageButtons,
	));
	}