Laravel Essentials

Core concepts, environment setup, and project structure for Laravel.

1. Prerequisites & Installation

Before starting, ensure you have PHP 8.3 and Composer installed.

Installing Composer

Download and install Composer from getcomposer.org. Verify with:

composer --version

Creating a New Project

Run this command in your terminal:

composer create-project laravel/laravel my-laravel-app

2. Environment Configuration (.env)

Laravel uses the .env file at the root to manage sensitive configurations.

Database Connection (WAMP Stack) Update these lines to connect to your manual WAMP setup:

DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3340          # Use the port you set (default 3306 or 3340)
DB_DATABASE=my_app_db
DB_USERNAME=root
DB_PASSWORD=swordfish # The password you set in the MySQL setup

3. Key Directory Structure

• app/Models/: Contains your Eloquent database models.
• app/Http/Controllers/: Contains the logic that handles user requests.
• routes/web.php: Defines the URLs for your web application.
• resources/views/: Contains your Blade templates (HTML).
• database/migrations/: Defines your database table structures.

4. Essential Artisan Commands

The php artisan tool is your best friend in Laravel development.

• php artisan serve: Starts the local development server.
• php artisan make:controller NameController: Generates a new controller.
• php artisan make:model Name -m: Creates a model and a migration file.
• php artisan migrate: Runs your migrations to create tables in MySQL.
• php artisan route:list: Shows all registered routes in your app.

5. Advanced Artisan Commands

Database Management

• php artisan migrate --path=/database/migrations/specific_file.php: Runs only a specific migration file instead of the whole folder.
• php artisan db:seed --class=UserSeeder: Runs a specific seeder class.
• php artisan migrate:fresh --seed: Crucial Command. It drops all tables, re-runs all migrations from scratch, and then runs the default DatabaseSeeder. Perfect for resetting your dev environment.

Storage & Filesystem

• php artisan storage:link: Creates a symbolic link from public/storage to storage/app/public. This is required to make uploaded files (like user avatars) accessible to the web browser.

Optimization & Cache Clearing

• php artisan cache:clear: Clears the application cache.
• php artisan config:clear: Removes the configuration cache file.
• php artisan config:cache: Combines all configuration files into one for faster loading (use this in Production).
• php artisan optimize:clear: A "master" clear command that removes the cache for config, routes, views, and events all at once.

Queue Handling (Background Tasks)

• php artisan queue:work: Starts a process that listens for and executes background jobs (like sending emails).
• php artisan queue:restart: Signal the queue workers to restart after they finish their current job. Use this whenever you update your code so the workers pick up the new changes.

6. Basic Workflow (MVC)

• Route: Define a URL in routes/web.php

Route::get('/user', [UserController::class, 'index']);

• Controller: Fetch data in UserController.php

public function index() {
    $users = User::all();
    return view('users.index', ['users' => $users]);
}

• View: Display data in resources/views/users/index.blade.php

@foreach ($users as $user)
    <p>{{ $user->name }}</p>
@endforeach