Symfony Tutorial

Symfony is the leading PHP framework for creating websites and web applications. It is built on Symfony Components, which are reusable and modular.

Prerequisites

Before starting, make sure to configure the following:

• Set Build Pack to nixpacks
• Set APP_ENV to specify the application environment (e.g., prod for production)
• Set APP_SECRET for application security
• Set NIXPACKS_PHP_FALLBACK_PATH to /index.php to indicate the default entry point
• Set NIXPACKS_PHP_ROOT_DIR to /app/public to specify the application root directory
• Set Exposed Ports to 80 to expose the HTTP port

Database Migrations

If you use Doctrine for database management, you can add the following script after deployment to apply migrations:

php bin/console doctrine:migrations:migrate --all-or-nothing --no-interaction

This script executes database migrations in non-interactive mode and ensures that all migrations are applied or none (all-or-nothing).

Other Components

If your application requires additional services like a database or Redis, you can create them beforehand in the Coolify dashboard. You will receive connection strings to use in your application as environment variables.

Database Connection String

Use the following connection string for PostgreSQL:

DATABASE_URL=postgresql://app:!ChangeMe!@127.0.0.1:5432/app?serverVersion=16&charset=utf8

Replace !ChangeMe! with your database password.

Redis Connection Details

For Redis, use the following connection details:

REDIS_HOST=<REDIS_HOST> REDIS_PASSWORD=null REDIS_PORT=6379

Replace <REDIS_HOST> with your Redis server address.

Trusted Proxy

You may need to configure trusted proxy settings if your application is behind a reverse proxy. To do this:

• Set the TRUSTED_PROXIES environment variable with your proxy server IP
• Add the following configuration in Symfony:

File: config/packages/framework.yaml

framework:
    trusted_proxies: '%env(TRUSTED_PROXIES)%'
    trusted_headers: ['x-forwarded-for', 'x-forwarded-host', 'x-forwarded-proto', 'x-forwarded-port', 'x-forwarded-prefix']

This configuration allows Symfony to trust HTTP headers provided by the reverse proxy, which is essential for correct HTTP request handling.