<?php
namespace App\Http\Model;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Facades\Schema;

class BaseModel extends Model
{
    // 打印SQL DB::table('article')->orderBy(DB::raw('rand()'))->toSql();
    //获取某一表的所有字段
    public static function getColumnListing($table)
    {
        return Schema::getColumnListing($table);
    }

    //过滤不是某一表的字段
    public static function filterTableColumn($data, $table)
    {
        $table_column = Schema::getColumnListing($table);

        if (!$table_column) {
            return $data;
        }

        foreach ($data as $k => $v) {
            if (!in_array($k, $table_column)) {
                unset($data[$k]);
            }
        }

        return $data;
    }

    //获取排序排序
    public static function getOrderByData($model, $orderby)
    {
        if ($orderby == 'rand()')
        {
            $model = $model->orderBy(\DB::raw('rand()'));
        }
        else
        {
            if (count($orderby) == count($orderby, 1))
            {
                $model = $model->orderBy($orderby[0], $orderby[1]);
            }
            else
            {
                foreach ($orderby as $row)
                {
                    $model = $model->orderBy($row[0], $row[1]);
                }
            }
        }

        return $model;
    }
}