Laravel: Create array for select

Selectable.php

<?php

namespace App\Traits;

use Illuminate\Database\Eloquent\Model;

trait Selectable
{
    public static function toSelectArray()
    {
        $instance = new static;
        $key = $instance->getKeyName();
        $value = $instance->getDisplayFieldName();

        /** @var Model $this */
        return static::all([$key, $value])
            ->pluck($value, $key)->toArray();
    }

    public function getDisplayFieldName()
    {
        if (property_exists($this, 'displayField')) {
            return $this->displayField;
        }
    }
}

Model

<?php

namespace App;

use App\Traits;
use Illuminate\Database\Eloquent\Model;

class User extends Model
{
    use Selectable;

    public $displayField = 'name';
}

Get array for select

User::toSelectArray();

Nice, exactly what I was looking for!