<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Malico\LaravelNanoid\Eloquent\Model;

class Book extends Model
{
    use HasFactory;
}

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
namespace Malico\LaravelNanoid\Eloquent\InteractsWithNanoid;

class Book extends Model{
    use HasFactory;
    use InteractsWithNanoid;

    /**
     * Indicates if the IDs are auto-incrementing.
     *
     * @var bool
     */
    public $incrementing = false;

    /**
     * The "type" of the auto-incrementing ID.
     *
     * @var string
     */
    protected $keyType = 'string';

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $guarded = [];

    /**
     * The "booting" method of the model.
     */
    protected static function boot(): void
    {
        parent::boot();

        static::creating(function (self $model): void {
            $model->{$model->getKeyName()} = $model->generateNanoid();
        });
    }
}

// migration file
public function up()
{
    Schema::create('test_models', function (Blueprint $table) {
        $table->string('id')->primary();
        //
        $table->timestamps();
    });
}

<?php

    /**
     * Nano id length.
     *
     * @var array|int
     */
    protected $nanoidLength = 10;
    // id will be of length 10
    // specifying to array. e.g [10, 20] will generate id of length 10 to 20

    /**
     * Nano id prefix.
     *
     * @var string
     */
    protected $nanoidPrefix = 'pl_'; // id will look: pl_2k1MzOO2shfwow ...

// use Illuminate\Foundation\Auth\User as Authenticatable;
use Malico\LaravelNanoid\Auth\User as Authenticatable;

#class User extends Authenticatable