Laravel 9 Factory Seed One To Many Relationship Example

Assume we have a table of users, and posts. The relationship between them is a user has many posts. Now we want to seed data with those tables together. How we can do that?

So if you do not know laravel 9 seed one to many relationships, then this laravel factory relationship one to many tutorials are going to be for you. In this tutorial, I will show you laravel factory seed relationship one to many.

Now run the below command to create these two factory like:

php artisan make:factory UserFactory
php artisan make:factory PostFactory

 

Now I am assuming you have a Post model which contains user_id and title. Now update the Post model like:

App\Models\Post.php

<?php

namespace App\Models;

use Illuminate\Support\Facades\URL;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;

class Post extends Model
{
    use HasFactory;
    
    protected $fillable = [
      'user_id',
      'title',
    ];
}

 

Read also: Laravel 9 Factory Create With Relationship Example

 

Laravel by default provides UserFactory like:

Database\Factories\UserFactory.php

<?php

namespace Database\Factories;

use Illuminate\Database\Eloquent\Factories\Factory;
use Illuminate\Support\Str;

/**
 * @extends \Illuminate\Database\Eloquent\Factories\Factory<\App\Models\User>
 */
class UserFactory extends Factory
{
    public function definition()
    {
        return [
            'name' => fake()->name(),
            'email' => fake()->unique()->safeEmail(),
            'email_verified_at' => now(),
            'password' => '$2y$10$92IXUNpkjO0rOQ5byMi.Ye4oKoEa3Ro9llC/.og/at2.uheWG/igi',
            'remember_token' => Str::random(10),
        ];
    }

    public function unverified()
    {
        return $this->state(fn (array $attributes) => [
            'email_verified_at' => null,
        ]);
    }
}

 

So now open DatabaseSeeder class and update it like:

Database\Seeders\DatabaseSeeder.php

<?php

namespace Database\Seeders;

use App\Models\Post;
use App\Models\User;
use Illuminate\Database\Seeder;
use Illuminate\Database\Console\Seeds\WithoutModelEvents;

class DatabaseSeeder extends Seeder
{
    public function run()
    {   
        User::factory(20)->create()
            ->each(function($user) {
            Post::create([
                'user_id' => $user->id,
                'title' => fake()->paragraph()
            ]);
        });
    }
}

 

Now if you run the below command:

php artisan db:seed

 

Then it will save dummy data into your users and posts table:

 

Read also: Laravel 9 Factory Seed Many To Many Pivot Table

 

Conclusion

I have tried to discuss the clear concept of laravel factory one to many. Now we know laravel 9 factory one to many. Hope this laravel factory relationship one to many tutorial will help you.