Web Applications from Scratch with Laravel

A clear, step-by-step guide to build a production-ready web application using Laravel. Simple language, practical examples, and a roadmap you can follow whether you’re a beginner or have some PHP experience.

Why choose Laravel?

Laravel gives a clean structure, built-in tools (routing, ORM, queues, task scheduling, testing), and a strong ecosystem. It helps you move fast without sacrificing maintainability.

Overview / Storyline

Imagine you want to build a booking app. You’ll need user sign-up, listings, booking logic, and an admin panel. Laravel helps you build these parts piece by piece: database, models, controllers, views, APIs, and background jobs — all organized and testable.

Prerequisites

• Basic PHP knowledge (variables, OOP, composer).
• Familiarity with HTML/CSS and basic JavaScript.
• A local development environment (Windows/Mac/Linux) with PHP, Composer, and a database (MySQL/Postgres/SQLite).
• Git for version control.

Project setup (first steps)

1. Install Laravel (using Composer).

   composer create-project laravel/laravel myapp cdmyapp 

2. Configure environment: copy .env.example → .env, set APP_KEY, DB credentials.

   php artisan key:generate 

3. Run development server:

   php artisan serve 

App structure (what matters)

• routes/ — where HTTP routes live (web.php, api.php).
• app/Models — Eloquent models (domain objects).
• app/Http/Controllers — controllers handle requests.
• database/migrations — schema definitions.
• resources/views — Blade templates (server-rendered HTML).
• resources/js / resources/css — frontend assets (Vite or Mix).
• tests/ — automated tests.

Database & Migrations

Create a migration and model for Listing:

php artisan make:model Listing -m 

Migration example:

// database/migrations/xxxx_create_listings_table.phpSchema::create('listings', function (Blueprint $table) {    $table->id();    $table->string('title');    $table->text('description')->nullable();    $table->decimal('price', 8, 2)->nullable();    $table->foreignId('user_id')->constrained()->onDelete('cascade');    $table->timestamps(); }); 

Run migrations:

php artisan migrate 

Models & Relationships

Define relationships in models:

// app/Models/User.phppublicfunctionlistings() {    return$this->hasMany(Listing::class); } // app/Models/Listing.phppublicfunctionuser() {    return$this->belongsTo(User::class); } 

Authentication (built-in)

Laravel provides starter auth scaffolding (use Breeze, Jetstream, or implement custom). Basic flow:

• Register / login routes and controllers.

• Protect routes with auth middleware.
  Example route:

  Route::middleware('auth')->group(function () {    Route::resource('listings', ListingController::class); }); 

Controllers (CRUD example)

Generate a controller:

php artisan make:controller ListingController --resource 

Simple store method:

publicfunctionstore(Request $request) {    $data= $request->validate([        'title'=> 'required|string|max:255',        'description'=> 'nullable|string',        'price'=> 'nullable|numeric',    ]);    $request->user()->listings()->create($data);    returnredirect()->route('listings.index')->with('success', 'Listing created.'); } 

Views with Blade

Blade keeps templates simple and secure.
Example: resources/views/listings/index.blade.php

APIs & JSON Responses

Use API routes for SPA or mobile clients:

// routes/api.phpRoute::middleware('auth:sanctum')->get('/user', function (Request $request) {    return$request->user(); }); Route::apiResource('listings', Api\ListingController::class); 

Use API Resources for consistent responses:

php artisan make:resource ListingResource 

File uploads, Storage & Images

Use Laravel Storage with local or cloud disks (S3). Example saving an uploaded image:

$path= $request->file('photo')->store('listings', 'public'); $listing->update(['photo_path'=> $path]); 

Validation & Form Requests

Keep controllers clean with Form Request classes:

php artisan make:request StoreListingRequest 

In StoreListingRequest define rules, and inject it into the controller.

Background Jobs & Queues

Offload slow tasks (emails, image processing) to queues:

php artisan make:job ProcessListingImages 

Configure queue driver (database, Redis) and run worker:

php artisan queue:work 

Email & Notifications

Use Laravel Mail and Notifications for user communication:

Mail::to($user)->send(new ListingPublished($listing)); $user->notify(new ListingBooked($booking)); 

Testing

Write feature and unit tests:

php artisan make:testListingTest --unit 

Example feature test:

publicfunctiontest_authenticated_user_can_create_listing() {    $user= User::factory()->create();    $this->actingAs($user)         ->post(route('listings.store'), [             'title'=> 'Test',             'description'=> 'Desc',         ])         ->assertRedirect(route('listings.index'));    $this->assertDatabaseHas('listings', ['title'=> 'Test']); } 

Security & Best Practices

• Validate all inputs.
• Escape output in views (Blade does this by default).
• Use prepared statements (Eloquent).
• Protect routes with middleware and policies (Authorization).
• Limit file upload sizes and types.
• Keep environment variables out of version control.

Performance & Caching

• Use route, view, and query caching.
• Use eager loading (with()) to avoid N+1 queries.
• Use Redis or Memcached for session/cache.
• Optimize assets with Vite or Mix.

Deployment checklist

• Use environment-specific .env.
• Run migrations & seeders on deploy: php artisan migrate --force.
• Use supervisor or systemd for queue workers.
• Configure HTTPS and strong server security.
• Set proper file permissions for storage and bootstrap/cache.
• Use CI/CD pipeline for automated tests and deploys.

Local to Production: Recommended stack

• PHP (supported version by your Laravel release)
• Database: MySQL / PostgreSQL
• Cache & queues: Redis
• Web server: Nginx + PHP-FPM
• CDN for static assets
• Cloud storage (S3) for uploads

Example mini roadmap (milestones)

1. Project scaffolding, auth, basic models.
2. CRUD for core entity (listings), migrations, basic UI.
3. Validation, file uploads, user permissions.
4. API endpoints and SPA integration (optional).
5. Background jobs, notifications.
6. Tests and performance tuning.
7. Deployment and monitoring.

Tips for faster progress

• Use code generators (artisan make:*) to stay consistent.
• Use model factories and seeders for test data.
• Keep controllers thin; move logic to services where needed.
• Write tests early to avoid regressions.
• Use Laravel’s official docs as your primary reference.

Useful packages (examples)

• Authentication scaffolding: Breeze, Jetstream.
• API tokens: Sanctum.
• Admin panels: Filament, Nova (commercial).
• Image handling: intervention/image.
• Queues and caching: predis / phpredis.

Final thought

Build iteratively: start with a minimal, working core, then add features one-by-one. Laravel’s tooling helps you keep code clean, secure, and maintainable. Follow best practices (validation, testing, caching) and your app will scale safely.