When it comes to application development, having test data available is essential. Seeders in Lithe offer an easy and efficient way to populate your database with initial or test data, allowing you to focus on the logic of your application. In this post, we will explore how to create and use seeders in Lithe.

What are Seeders?

Seeders are classes responsible for inserting data into the database in an automated way. They are especially useful during development, when you need dummy data to test application functionality and behavior. With seeders, you can ensure that your application has the necessary data without the need for manual input.

Creating Seeders

In Lithe, you can easily create seeders using the make:seeder command. This command generates a new seeder file in the src/database/seeders directory, where you can define the logic to insert the desired data.

Command to Create a Seeder

To create a new seeder, simply run the following command in the terminal:

php line make:seeder NomeDoSeeder

Where:

• SeederName: is the name of the seeder to be created.

Structure of a Seeder

A seeder generated in Lithe has the following basic structure:

class NomeDoSeeder
{
    public function run($db): void
    {
        // Lógica para inserir dados no banco de dados
    }
}

Here, the run method is responsible for inserting the data. The $db parameter can be any type of database connection supported by Lithe, making seeders flexible for different contexts.

Seeder Example

Let's see an example of a seeder that creates records in the users table:

class CreateUsersSeeder
{
    public function run($db): void
    {
        $users = [
            ['name' => 'John Doe', 'email' => 'john@example.com'],
            ['name' => 'Jane Doe', 'email' => 'jane@example.com'],
        ];

        foreach ($users as $user) {
            // Lógica para inserir cada usuário na tabela
            $db->query("INSERT INTO users (name, email) VALUES ('{$user['name']}', '{$user['email']}')");
        }
    }
}

Running Seeders

After creating your seeders, you can run them to populate your database with test data.

Running All Seeders

To run all seeders at once, use the command:

php line db:seed

Running a Specific Seeder

If you only want to run a specific seeder, use the db:seed command with the --class:
option

php line db:seed --class=NomeDoSeeder

Conclusion

Seeders are a powerful tool in Lithe to make it easy to populate your database with test data. With the simplicity of creating and running seeders, you can ensure that your application is always ready for development and testing.

Explore Lithe's features and make the most of seeders to create high-quality PHP applications!

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