<?php


namespace fastphp\base;

use fastphp\db\Sql;

class Model extends Sql
{
    protected $model;

    public function __construct()
    {
        //获取数据库表名
        if(!$this->table){
            //获取模型类名称
            $this->model = get_class($this);

            //删除模型名最后的model
            $this->model = substr($this->model,0,-5);

            //数据库表名与类名一致
            $this->table = strtolower($this->model);
        }
    }

    /**
     * 获取总数目
     * 
     */
    public function getCount(){
        return $this->field('count(1) as count')->fetch();
    }

    /**
     * 按照页数获取数据
     * @param $fields 'id,count(1)...'
     * @param $order  'id desc'/'id asc'
     * @param $limit = '100'   限制查询100条
     *        $limit = '2,100' 查询第二页 100条数据
     */
    public function getListPage($fields = '*',$order = 'id desc', $page = '50')
    {
        return $this->field($fields)->order($order)->limit($page)->fetchAll();
    }

}