laravel_sketch/app/Base/BaseModel.php

<?php

namespace App\Base;

use Illuminate\Database\Eloquent\Model;
use DateTimeInterface;
/**
 * App\Base\BaseModel
 *
 * @method static \Illuminate\Database\Eloquent\Builder|BaseModel newModelQuery()
 * @method static \Illuminate\Database\Eloquent\Builder|BaseModel newQuery()
 * @method static \Illuminate\Database\Eloquent\Builder|BaseModel query()
 * @mixin \Eloquent
 */
class BaseModel extends Model
{
    protected $perPage = 10;
    protected $casts = [
        'created_at' => 'datetime:Y-m-d H:i:s',
    ];

    protected function serializeDate(DateTimeInterface $date)
    {
        return $date->format('Y');
    }
}