Explore a Symfony Project Like a Pro in 5 Minutes

Let’s say you’ve received a shared GitHub project built with Symfony, but it’s missing a ‘ReadMe’ file — perhaps from your boss or a client. Let’s have some fun exploring and understanding its structure, purpose, and functionality like experts.

Here are the key files and directories to focus on:

1. .env File

This is where you’ll find the application’s configuration parameters. Look for URLs, Database credentials, External connections ..etc.
The .env file often provides the foundational setup for the application.

2. Bundles.php

This file lists all the bundles used in the project. Some bundles can immediately give you insights into the project’s architecture and developer strategies. For example: API Platform, EasyAdmin, JWT, Stimulus/Turbo, UnitTest.

3. Security.yaml

This file unveils the authentication and authorization setup. Pay attention to the number of firewalls, URL patterns and rules for each firewall, and the methods used for securing the application.

4. Entity Folder

A glance at the entities can quickly reveal the core purpose of the project. For example: A Product entity might suggest an e-commerce platform.

5. Composer.json

This file is your go-to for understanding PHP and Symfony versions, Dependencies and their versions. Also, additional insights about the project’s structure through the listed packages.

6. Services.yaml

This file contains all the registered services. For more info, check the src/Service folder for custom services. You can take a look for handlers, subscribers, or other folders defined there.

7. Form Folder

Examining the forms can provide insights into the application’s structure. However, a subfolder like Admin within the Form directory could suggest the developer opted for a more manual approach to building an admin dashboard.

8. Template Folder

If Twig is the primary templating engine, this folder is essential for understanding the project’s front-end structure. By reviewing these templates, you can visualize the project’s layout and user interface.

Even if another front-end framework (e.g., React or Vue.js) is used, Twig templates might still exist for essential functionalities like forms, error pages, or email templates.

9. Controller Folder

I’ve saved this for last because once you open it, you might find yourself stuck there for extra time.

This is where the real code of the project resides. Reviewing the controllers will help you understand the application’s functionality and flow.

Good luck discovering, correcting, or improving projects — or creating one from scratch!

Happy coding 😊