geolook/app/Setting.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Setting extends Model
{
    public $timestamps = false;

    public static function getSettings($key = null){
        $settings = $key ? self::where('key', $key)->first() : self::get();
        $collect = collect();
        foreach ($settings as $setting){
            $collect->put($setting->key, $setting->value);
        }

        return $collect;
    }
}