How to Install Swagger in Laravel 12 Step-by-Step Part 1 | API Documentation (2026)

Описание: In this video, I explain how to install and configure Swagger API documentation in Laravel 12 from scratch.

This tutorial focuses on a clean installation process, version compatibility requirements, and common mistakes developers face while setting up Swagger in Laravel.

I have also shared all the IMPORTANT COMMANDS and COMMENTED CONFIGURATION IDEAS (without symbols) so viewers can easily follow and implement them in their own projects.

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IMPORTANT SWAGGER INSTALLATION COMMANDS
──────────────────────────────────

composer require darkaonline/l5-swagger

php artisan vendor:publish --provider "L5Swagger Service Provider"

php artisan l5-swagger:generate

OPTIONAL FIX:-

If Swagger UI does not load or shows undefined variable errors,
run the commands below to forcefully regenerate the Swagger config
and template files.

php artisan vendor:publish --provider="L5Swagger\L5SwaggerServiceProvider" --tag=config --force
php artisan vendor:publish --provider="L5Swagger\L5SwaggerServiceProvider" --tag=views --force

Clear cache (IMPORTANT)
php artisan route:clear
php artisan view:clear
php artisan config:clear
php artisan cache:clear

Check routes
php artisan route:list

──────────────────────────────────
📝 SWAGGER BASIC INFO COMMENT (Put in Controller.php File)
──────────────────────────────────
/**
@OA\Info(
title="Laravel CRUD API",
version="1.0.0",
description="User Management API"
)
@OA\Server(
url="http://localhost:8000",
description="Local Server"
)
*/
➡️ This information is shown at the TOP of your Swagger documentation page.

──────────────────────────────────
🛣 ROUTE SETUP (WEB & API BOTH EXPLAINED)
──────────────────────────────────

Web route (web.php)
Route::get('/users', [UserController::class, 'index'])-name('users.index');

API route (api.php)
Route::get('/users', [UserController::class, 'index']);

➡️ In this video, I clearly explain:
• How /users route works using web.php
• How /api/users route works using api.php
• Why Laravel automatically adds the /api prefix
• How both routes can be tested in Swagger UI

──────────────────────────────────
📂 USER CONTROLLER SWAGGER COMMENT (GET ALL USERS API)
──────────────────────────────────

class UserController extends Controller
{
// Show all users
/**
@OA\Get(
path="/users",
summary="Get list of users",
tags={"Users"},
@OA\Response(
response=200,
description="Successful operation"
)
)
*/
public function index()
{
return User::all();
// return view('users.user', ['users' = $users]);
}
}

──────────────────────────────────
GET ALL USERS API (SWAGGER DEMO)
──────────────────────────────────

I created a GET ALL USERS API and demonstrated:
Fetching all users from database
Displaying user data inside Swagger UI
Using same controller method for
/users
/api/users

I also explained:
What Swagger commented code does
How Swagger reads controller comments
Where exactly this API appears in the documentation

──────────────────────────────────
WHO IS THIS VIDEO FOR?
──────────────────────────────────

Laravel beginners
PHP developers
Backend developers
API developers
Anyone learning Swagger and OpenAPI

If you want to create professional API documentation in Laravel and clearly understand routing, this video will save you a lot of debugging time.

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