Make Laravel API-only

1. Create a Laravel Project

Do “composer create-project”, or do “git clone” an existing Laravel project.

See the following article, if you want to create a Laravel project on Docker.
https://medium.com/@tsubasakondo_36683/create-a-project-for-laravel-282e88ac76fc

See the following article, if you want to create a Laravel project on AWS Cloud9.
https://medium.com/@tsubasakondo_36683/how-to-setup-laravel-on-cloud-9-9cf13cf17699

2. Add middleware to change Response to JSON

$ touch app/Http/Middleware/ForceJson.php
// Edit "ForceJson.php" as follows.
<?php
namespace App\Http\Middleware;
use Closure;
use Illuminate\Http\Request;
class ForceJson
{
    /**
     * Handle an incoming request.
     */
    public function handle(Request $request, Closure $next)
    {
        $request->headers->set('Accept', 'application/json');
        return $next($request);
    }
}
// Edit app/Http/Kernel.php
protected $middleware = [
    ...
    \App\Http\Middleware\ForceJson::class
];

3. Install a CORS library

$ composer require spatie/laravel-cors
// Edit app/Http/Kernel.php
protected $middleware = [
    ...
    \Spatie\Cors\Cors::class
];
$ php artisan vendor:publish --provider="Spatie\Cors\CorsServiceProvider" --tag="config"
// Edit "config/cors.php".

See the following URL for details.
https://github.com/spatie/laravel-cors

4. Confirm Kernel.php

Confirm settings

For example, if “routes/api.php” is the above, the endpoint will be as above.

The error message is displayed in JSON, because “ForceJson Middleware” is added.