jucai/app/Models/Recuperate.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

class Recuperate extends Model
{
    protected $table = 'recuperate';

    use SoftDeletes;

    public function getImgListAttribute($value)
    {
        return empty($value) ? [] : json_decode($value, true);
    }

    public function setImgListAttribute($value)
    {
        $imgList = empty($value) ? '[]' : json_encode($value);

        $this->attributes['img_list'] = $imgList;
    }

    public function recuperate_category()
    {
        return $this->hasOne(RecuperateCategory::class, 'id', 'r_c_id');
    }
}