solarai/app/Models/Setting.php

<?php

namespace App\Models;

use Carbon\Carbon;

class Setting extends BaseModel
{
    protected $table = 'setting';

    /**
     * The attributes that are mass assignable.
     *
     * @var array<int, string>
     */
    protected $fillable = [
        'name', 'key', 'value', 'system',
        'created_id', 'updated_id',
        'created_at', 'updated_at'
    ];

    /**
     * The attributes that should be hidden for serialization.
     *
     * @var array<int, string>
     */
    protected $hidden = [
    ];

    protected $visible = [
        'id', 'name', 'key', 'value', 'system',
        'created_id',
        'created_at'
    ];

    /**
     * The attributes that should be cast.
     *
     * @var array<string, string>
     */
    protected $casts = [
        'system' => 'integer'
    ];

    public function user()
    {
        return $this->belongsTo('App\Models\User', 'created_id');
    }
}