什么是处理Codeigniter中的帖子数据的好方法？

class Post_model extends CI_Model {
    public function __construct() {
        parent::__construct();
    }
    
    public function get_posts() {
        $this->db->select('id, title, body, author, created_at');
        $this->db->order_by('created_at', 'desc');
        $query = $this->db->get('posts');
        
        return $query->result();
    }
    
    public function insert_post($title, $body, $author) {
        $this->db->set('title', $title);
        $this->db->set('body', $body);
        $this->db->set('author', $author);
        $this->db->set('created_at', 'NOW()', FALSE);
        $this->db->insert('posts');
        
        return $this->db->insert_id();
    }
}