Routing

Goal

This snapshot advances Keystone Gazette by teaching you to organize page routes with attributes.

Every numbered folder is a complete app. Run this stage independently, then compare it with the previous folder.

Prerequisites

Use PHP 8.2+, Composer, and Docker for MySQL stages.

Port 8002 must be free. Copy .env.example before starting database stages.

• PHP 8.2+ and Composer
• A code editor and terminal
• Docker from part 4 onward

Concepts

Route attributes map HTTP methods and paths to controller actions.

Keep controllers thin: forms accept input, Doctrine entities enforce rules, and Twig escapes output by default.

Walkthrough

Add home, about, and health handlers.

Read the example, then open the matching snapshot. The repository includes the surrounding setup and error handling.

#[Route('/about')]\npublic function about(): Response { return new Response('About Keystone Gazette'); }

Run and verify

Enter 02-Routing, install Composer deps, copy .env.example, and start the Symfony server on port 8002.

Open http://127.0.0.1:8002. Watch the terminal for validation and database errors.

git clone https://github.com/michaeldunga1/fcc-symfony-blog.git
cd fcc-symfony-blog/02-Routing
composer install
cp .env.example .env
symfony server:start --port=8002 --no-tls
# or: php -S 127.0.0.1:8002 -t public

Troubleshooting

A missing route attribute leaves the path undefined.

For database failures, confirm Docker and the keystone_NN name when applicable. Never commit .env or vendor.

• Read the first error first
• Restart after environment changes
• Never commit secrets

Try this

Add a /contact plain-text route.

Test a happy path and one invalid or unauthorized request.

• Make one small change
• Test it in the browser
• Compare with the next snapshot only after it works