Laravel Basics 2 : route parameter

1-route-parameter.php

<?php

use Illuminate\Http\Request;

Route::get('/user/{id}', function (Request $request, $id) {
    return 'User '.$id;
});

2-optional-parameter.php

<?php

Route::get('/path/{start?}/{end?}', function ($start = null, $end = null)
{
    if (!$start) {
        // set start
    }
    if (!$end) {
        // set end
    }
    // do other stuff
}

3-model-parameter.php

<?php

use App\Models\User;

Route::get('/users/{user}', function (User $user) {
    return $user->email;
});

4-named-model-parameter.php

<?php
// routes
use App\Models\Post;

Route::get('/posts/{post:slug}', function (Post $post) {
    return $post;
});

// ou dans votre modèle
public function getRouteKeyName()
{
    return 'slug';
}

5-missing-model-parameter.php

<?php
use App\Http\Controllers\LocationsController;
use Illuminate\Http\Request;

Route::get('/locations/{location:slug}', [LocationsController::class, 'show'])
  ->name('locations.view')
  ->missing(function (Request $request) {
      return Redirect::route('locations.index');
  });