hcsl/app/Model/OrdersProductBom.php

<?php

namespace App\Model;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Schema;

/**
 *
 * Class Unit
 * @package App\Models
 */
class OrdersProductBom extends Model
{
    protected  $table = "";
    protected $prefix_table = 'orders_product_bom'; // 对照表
    const CREATED_AT = 'crt_time';
    const UPDATED_AT = 'upd_time';
    protected $dateFormat = 'U';
    //$fillable属性里面的字段是可以赋值的，其他的所有属性不能被赋值
    //$guarded属性里面的字段是不可以赋值，其他的所有属性都能被赋值
    protected $fillable = ['param']; // $attributes 里传参数需要配置这个参数名字

    public function __construct(array $attributes = [])
    {
        $param = request()->get('param');

        if(! empty($param)) $this->setTableByParam($param);

        if(isset($attributes['param']) && $attributes['param'] > 0) $this->setTableByParam($attributes['param']);

        $this->createTable($this->table);

        parent::__construct($attributes);
    }

    public function setTableByParam($param){
        if($param > 0){
            $table = $this->prefix_table . '_' . $param;
            $this->table = $table;
        }
    }

    //创建表
    private function createTable($table){
        if(! empty($table) && ! Schema::hasTable($table) && Schema::hasTable($this->prefix_table)){
            //执行建表语句
            DB::statement('create table '. $table .' like ' . $this->prefix_table);
        }
    }
}