Laravel 8 Factory - One To Many (Polymorphic) Relationship

php artisan make:factory CommentFactory --model=Comment

LOL, that is the correct answer.

However, I've since reworded the question. I'm trying to work out what goes inside said CommmentFactory.

I have been looking for something to help you and here is the best thing that I came up with:

https://laravel.com/docs/8.x/database-testing#polymorphic-relationships

@pom

Here is your factory:

<?php

namespace Database\Factories;

use App\Models\Comment;
use App\Models\Post;
use App\Models\Video;
use Illuminate\Database\Eloquent\Factories\Factory;

class CommentFactory extends Factory
{
    /**
     * The name of the factory's corresponding model.
     *
     * @var string
     */
    protected $model = Comment::class;

    /**
     * Define the model's default state.
     *
     * @return array
     */
    public function definition()
    {
        $commentable = $this->commentable();

        return [
            'body' => $this->faker->paragraph,
            'commentable_id' => $commentable::factory(),
            'commentable_type' => $commentable,
        ];
    }

    public function commentable()
    {
        return $this->faker->randomElement([
            Post::class,
            Video::class,
        ]);
    }
}

and when you want to control the commentable you can refer to:

https://laravel.com/docs/8.x/database-testing#polymorphic-relationships

or:

$video = Video::factory()->hasComments(3)->create();

$comments = Comment::factory()->count(3)->for(
    Video::factory(), 'commentable'
)->create();

tweak it to fit your needs, hope this helps you

Awesome, thank you very much @lemmon 👍 that did the trick.

Glad I could help>

I prefer using the Factory configure method for polymorphic relationships.

<?php

namespace Database\Factories;

use App\Models\Comment;
use App\Models\Post;
use App\Models\Video;
use Illuminate\Database\Eloquent\Factories\Factory;

class CommentFactory extends Factory
{
    /**
     * Define the model's default state.
     *
     * @return array
     */
    public function definition()
    {
        return [
            'body' => $this->faker->paragraph,
        ];
    }

    public function configure()
    {
        return $this->for(
            static::factoryForModel($this->commentable()),
            'commentable',
        );
    }

    public function commentable()
    {
        return $this->faker->randomElement([
            Post::class,
            Video::class,
        ]);
    }
}