Application Structure
Introduction
The default Laravel application structure is intended to provide a great starting point for both large and small applications. Of course, you are free to organize your application however you like. Laravel imposes almost no restrictions on where any given class is located - as long as Composer can autoload the class.
The Root Directory
The root directory of a fresh Laravel installation contains a variety of directories:
The app
directory, as you might expect, contains the core code of your application. We'll explore this directory in more detail soon.
The bootstrap
directory contains a few files that bootstrap the framework and configure autoloading, as well as a cache
directory that contains a few framework generated files for bootstrap performance optimization.
The config
directory, as the name implies, contains all of your application's configuration files.
The database
directory contains your database migration and seeds. If you wish, you may also use this directory to hold an SQLite database.
The public
directory contains the front controller and your assets (images, JavaScript, CSS, etc.).
The resources
directory contains your views, raw assets (LESS, SASS, CoffeeScript), and localization files.
The storage
directory contains compiled Blade templates, file based sessions, file caches, and other files generated by the framework. This directory is segregated into app
, framework
, and logs
directories. The app
directory may be used to store any files utilized by your application. The framework
directory is used to store framework generated files and caches. Finally, the logs
directory contains your application's log files.
The tests
directory contains your automated tests. An example PHPUnit is provided out of the box.
The vendor
directory contains your Composer dependencies.
The App Directory
The "meat" of your application lives in the app
directory. By default, this directory is namespaced under App
and is autoloaded by Composer using the PSR-4 autoloading standard.
The app
directory ships with a variety of additional directories such as Console
, Http
, and Providers
. Think of the Console
and Http
directories as providing an API into the "core" of your application. The HTTP protocol and CLI are both mechanisms to interact with your application, but do not actually contain application logic. In other words, they are simply two ways of issuing commands to your application. The Console
directory contains all of your Artisan commands, while the Http
directory contains your controllers, middleware, and requests.
The Events
directory, as you might expect, houses event classes. Events may be used to alert other parts of your application that a given action has occurred, providing a great deal of flexibility and decoupling.
The Exceptions
directory contains your application's exception handler and is also a good place to stick any exceptions thrown by your application.
The Jobs
directory, of course, houses the queueable jobs for your application. Jobs may be queued by your application or run synchronously within the current request lifecycle.
The Listeners
directory contains the handler classes for your events. Handlers receive an event and perform logic in response to the event being fired. For example, a UserRegistered
event might be handled by a SendWelcomeEmail
listener.
The Policies
directory contains the authorization policy classes for your application. Policies are used to determine if a user can perform a given action against a resource. For more information, check out the authorization documentation.
Many of the classes in the app
directory can be generated by Artisan via commands. To review the available commands, run the php artisan list make
command in your terminal.