Laravel 8, Model factory class not found

Question

so when using the new model factories class introduced in laravel 8.x, ive this weird issue saying that laravel cannot find the factory that corresponds to the model. i get

Answer 1

You need to ensure that the namespace is the same: as shown below: otherwise this will screw you up big time. The name of the factory is the name of the model + Factory

e.g. app\models\User- will match to database/factories/UserFactory

finally ensure you run: composer dumpautoload

Answer 2

Today I have got below issue after upgrading my project from Laravel 7 to Laravel 8 and updating it online on server.

Trait 'Illuminate\Database\Eloquent\Factories\HasFactory' not found

Even I have updated composer.json with autoload directive given in answer by @lagbox but it did not resolved the issue for me.

Finally I have updated complete vendors folder online that have resolved my issue.

Hope it helps someone in future!

Answer 3

I'm in the process of migrating from laravel 7 to 8.

After banging my head against the wall for a while and looking at the source code, I saw that you can optionally override what factory class gets called for a model using the newFactory method on the model.

I also then noticed that it IS in the documentation (https://laravel.com/docs/8.x/database-testing#creating-models) - I just didn't understand what it meant the first time I read it. Now I do.

I solved this by the following:

<?php

namespace My\Fancy\Models;

use Database\Factories\SomeFancyFactory;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class SomeClass extends Model
{
    use HasFactory;

    /** @return SomeFancyFactory */
    protected static function newFactory()
    {
        return SomeFancyFactory::new();
    }
}

After this change, my tests passed as expected.

Answer 4

I was having this same issue, but for a different reason. If you're using factories in the setUp function of a test, make sure:

1. You're extending Tests\TestCase (instead of PHPUnit\Framework\TestCase)
2. The first line of your setUp function should be parent::setUp(); (I was missing this)

Answer 5

Apparently you have to respect the folder structure as well. For example, if you have the User Model in the following path: app\Models\Users\User, then the respective factory should be located in database\factories\Users\UserFactory.

Answer 6

If you upgraded to 8 from a previous version you are probably missing the autoload directive for the Database\Factories namespace in composer.json:

"autoload": {
    "psr-4": {
        "App\\": "app/",
        "Database\\Factories\\": "database/factories/",
        "Database\\Seeders\\": "database/seeders/"
    }
},

You can also remove the classmap part, since it is no longer needed.

Run composer dump after making these changes.

Laravel 8.x Docs - Upgrade Guide - Database - Seeder and Factory Namespace