owl-admin/app/Models/SettingItem.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\SoftDeletes;
use Slowlyo\OwlAdmin\Models\BaseModel as Model;

/**
 * 设置项
 */
class SettingItem extends Model
{
    use SoftDeletes;

    protected $table = 'setting_items';

    // 应该添加与 setting_groups 的关联
    public function group()
    {
        return $this->belongsTo(SettingGroup::class, 'group_id');
    }

    // 与 setting_values 的关联
    public function values()
    {
        return $this->hasMany(SettingValue::class, 'item_id');
    }
}