einundzwanzig-portal/database/factories/EpisodeFactory.php

<?php

namespace Database\Factories;

use App\Models\Episode;
use App\Models\Podcast;
use Illuminate\Database\Eloquent\Factories\Factory;

class EpisodeFactory extends Factory
{
    /**
     * Define the model's default state.
     *
     * @return array
     */
    public function definition(): array
    {
        return [
            'podcast_id' => Podcast::factory(),
            'data' => '{}',
        ];
    }
}