zhuishuyun_quickapp/app/Modules/Book/Models/ChapterImage.php

<?php
/**
 * Created by PhpStorm.
 * User: tandunzhao
 * Date: 2018/1/19
 * Time: 上午9:59
 */

namespace App\Modules\Book\Models;


use Illuminate\Database\Eloquent\Model;

class ChapterImage extends Model
{
    protected  $table = 'chapter_images';
    protected  $fillable = ['bid', 'cid', 'sequence', 'cid_sequence', 'image_url','image_height','image_width','file_size'];

    public static function deleteChapterImage($bid, $cid = '') {
        $search_object = self::where('bid', $bid);
        if($cid) {
            $search_object -> where('cid', $cid);
        }
        $search_object->delete();
    }

    /**
     * @param $bid
     * @param string $cids [1,2,3,4,5]
     * @return mixed
     */
    public static function getChapterImage($bid, $cids = '') {
        $search_object = self::orderBy('bid', 'asc')->orderBy('cid_sequence', 'asc')->orderBy('sequence', 'asc');
        $search_object -> where('bid', $bid);
        if($cids) {
            $search_object -> whereIn('cid', $cids);
        }
        return $search_object->get();
    }
}