Routing maps URLs and HTTP methods to the code that handles them. In Laravel you define routes in route files (routes/web.php, routes/api.php) using the Route facade, pointing each to a closure or a controller method.
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Each HTTP method has a Route:: helper. Routes point to a closure (for simple cases) or, more commonly, a [Controller::class, 'method'] pair.
Route::get('/users/{id}', function ($id) { // {id} captured and passed in
return User::find($id);
});
Route::get('/posts/{post?}', fn($post = null) => ...); // optional parameter
Route::get('/profile', [ProfileController::class, 'show'])->name('profile');
// generate URLs by NAME — refactor-safe (change the URL in one place)
route('profile'); // → "/profile"
redirect()->route('profile');
// in Blade: <a href="{{ route('profile') }}">Profile</a>
Named routes let you reference routes by name everywhere instead of hardcoding URLs — so changing a URL doesn't break links (a DRY, maintainable practice).
// group routes with shared middleware/prefix
Route::middleware('auth')->prefix('admin')->group(function () {
Route::get('/dashboard', ...); // → /admin/dashboard, requires auth
});
// resource routes — all 7 RESTful routes for a controller at once
Route::resource('posts', PostController::class);
// → index, create, store, show, edit, update, destroy automatically
Route::resource generates a full set of RESTful routes for a controller — minimal code for standard CRUD.
Routing is fundamental to every Laravel application — it defines your app's URLs and connects them to handlers, so understanding it is essential everyday knowledge for building any endpoint.
Knowing how to define routes for each HTTP method, capture parameters, point routes to controllers, and organize them with groups (for shared middleware/prefixes) is necessary for structuring an application.
Two practices are especially important: named routes (referencing routes by name rather than hardcoded URLs — a key maintainability win that keeps links from breaking when URLs change), and resource routes (Route::resource, which generates all standard RESTful routes for a controller with one line — a major productivity feature for CRUD).
Routing connects the entry point (URLs) to the application logic (controllers), making it core, must-know material for building well-structured Laravel applications, and the named-route and resource-route conventions reflect the framework's emphasis on clean, DRY, RESTful design.