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  • CI 笔记7,easyui 异步加载

    在做后台导航时,需要异步加载,pid和id的循环问题,在controller中,建立另外一个方法,嵌套循环,查找是否pid〉1。

        public function nav_list()
        {
            $this->load->database();
            /*
            测试demo json传值        
            $query = $this->db->query('select nav_name,nav_desc from nav');
            $row = $query->result_array();
            $json = json_encode($row);
            echo $json;
            */
    
            /**
             * 异步加载 
             */    
            
            $id = isset($_POST['id']) ? intval($_POST['id']) : 0;
            $result = array();
            $query = $this->db->query("select id,nav_name,nav_desc,pid from nav where pid =$id");
            foreach($query->result_array() as $row)
            {
                $node = array();
                $node['id'] = $row['id'];
                $node['text'] = $row['nav_desc'];
                $node['state'] = $this->has_child($row['id']) ? 'closed' : 'open';
                array_push($result,$node);
            }    
    
            echo json_encode($result);
    
        }
    
        
        public function has_child($id)
        {
            $this->load->database();
            $query = $this->db->query("select pid from nav where pid=$id");
            $row = $query->num_rows();
            return $row > 1 ? true : false;
        }

    html代码为:

            <!-- 导航 -->
        
            <ul id="nav"  class="easyui-tree"  url="nav_list">
                
            </ul>
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  • 原文地址:https://www.cnblogs.com/sdgtxuyong/p/5488465.html
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