Database: Seeding

• Introduction
• Writing Seeders
  • Using Model Factories
• Running Seeders

Introduction

Hypervel includes the ability to seed your database with data using seed classes. All seed classes are stored in the database/seeders directory. By default, the db:seed command runs all the seeders in database/seeders directory.

Note

Mass assignment protection is automatically disabled during database seeding.

Writing Seeders

To generate a seeder, execute the make:seeder Artisan command. All seeders generated by the framework will be placed in the database/seeders directory:

php artisan make:seeder UserSeeder

A seeder class only contains one method by default: run. This method is called when the db:seed Artisan command is executed. Within the run method, you may insert data into your database however you wish. You may use the query builder to manually insert data or you may use Eloquent model factories.

As an example, let's modify the default DatabaseSeeder class and add a database insert statement to the run method:

<?php

use Hyperf\Database\Seeders\Seeder;
use Hypervel\Support\Facades\DB;
use Hypervel\Support\Facades\Hash;
use Hypervel\Support\Str;

class DatabaseSeeder extends Seeder
{
    /**
     * Run the database seeders.
     */
    public function run(): void
    {
        DB::table('users')->insert([
            'name' => Str::random(10),
            'email' => Str::random(10).'@example.com',
            'password' => Hash::make('password'),
        ]);
    }
}

Note

Seeder classes don't support namespace yet, and will support in v0.3.0.

Using Model Factories

Of course, manually specifying the attributes for each model seed is cumbersome. Instead, you can use model factories to conveniently generate large amounts of database records. First, review the model factory documentation to learn how to define your factories.

For example, let's create 50 users:

use App\Models\User;

/**
 * Run the database seeders.
 */
public function run(): void
{
    factory(User::class, 50)
        ->create();
}

Running Seeders

You may execute the db:seed Artisan command to seed your database. By default, the db:seed command runs all the seeders in database/seeders directory.

php artisan db:seed

You may also seed your database using the migrate:fresh command in combination with the --seed option, which will drop all tables and re-run all of your migrations. This command is useful for completely re-building your database.

php artisan migrate:fresh --seed

Forcing Seeders to Run in Production

Some seeding operations may cause you to alter or lose data. In order to protect you from running seeding commands against your production database, you will be prompted for confirmation before the seeders are executed in the production environment. To force the seeders to run without a prompt, use the --force flag:

php artisan db:seed --force