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Laravel Handlers

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Goodbye controllers, hello request handlers!

This package adds a handy way of creating the request handlers.

Basically, the request handler is a single action controller which leads to a more clear request to the response flow.

You should try to use request handlers instead of with controllers and you probably won't feel the need to go back to controllers anytime soon.

Some advantages in comparison with controllers

  • single responsibility (seems like controllers with many actions break this principle);
  • testability (you won't need to resolve dependencies that are not related to the action you are testing, since there is only single action in each request handler);
  • registering of routes (Route::get('/posts/{post}', ShowPost::class) is much more convenient and pretty than Route::get('/posts/{post}', '[email protected]')).

Installation

You can install this package via composer using this command:

composer require hivokas/laravel-handlers

The package will automatically register itself.

You can publish the config file with:

php artisan vendor:publish --provider="Hivokas\LaravelHandlers\Providers\HandlersServiceProvider" --tag="config"

This is the contents of the published config file:

return [

    /*
    |--------------------------------------------------------------------------
    | Base Handler Class
    |--------------------------------------------------------------------------
    |
    | Here you may specify which class will be used as the base class
    | for all generated handlers.
    |
    */

    'base' => Hivokas\LaravelHandlers\Handler::class,

];

Creation of request handlers

Showcase

  • Create a handler
php artisan make:handler ShowPost

ShowPost handler will be created

  • Create handlers for all resource actions (index, show, create, store, edit, update, destroy)
php artisan make:handler Post --resource

IndexPost, ShowPost, CreatePost, StorePost, EditPost, UpdatePost, DestroyPost handlers will be created

  • Exclude unnecessary for an API actions (create, edit)
php artisan make:handler Post --resource --api

IndexPost, ShowPost, StorePost, UpdatePost, DestroyPost handlers will be created

  • Create handlers by the specified actions
php artisan make:handler Post --actions=show,destroy,approve

ShowPost, DestroyPost, ApprovePost handlers will be created

  • Exclude specified actions
php artisan make:handler Post --resource --except=index,show,edit

CreatePost, StorePost, UpdatePost, DestroyPost handlers will be created

  • Specify namespace for handlers creating (relative path)
php artisan make:handler Post --resource --namespace=Post

IndexPost, ShowPost, CreatePost, StorePost, EditPost, UpdatePost, DestroyPost handlers will be created under App\Http\Handlers\Post namespace in app/Http/Handlers/Post directory

  • Specify namespace for handlers creating (absolute path)
php artisan make:handler ActivateUser --namespace=\\App\\Foo\\Bar

ActivateUser handler will be created under App\Foo\Bar namespace in app/Foo/Bar directory

  • Force create
php artisan make:handler EditPost --force

If EditPost handler already exists, it will be overwritten by the new one

Writing logic in request handler

Request handlers are invokable classes that use PHP's __invoke magic function, turning them into a Callable, which allows them to be called as a function. So you need to return response in __invoke method.

Eventually your handlers will look something like this:

<?php

namespace App\Http\Handlers\Foo;

use App\Models\Foo;
use App\Services\FooService;
use Hivokas\LaravelHandlers\Handler;
use App\Http\Requests\Foo\UpdateFooRequest;

class UpdateFoo extends Handler
{
    protected $service;
    
    public function __construct(FooService $service)
    {
        $this->service = $service;
    }
    
    public function __invoke(UpdateFooRequest $request, Foo $foo)
    {
        $this->bar($foo, $request->validated());
        
        return redirect('foo.show', $foo);
    }

    protected function bar(Foo $foo, array $validated)
    {
        return $this->service->baz($foo, $validated);
    }
}

Registering of routes

Here are several ways to register routes where request handlers are used as an actions.

In separate handlers.php route file

  • Create routes/handlers.php file (you can choose any name, it's just an example)
  • Define the "handlers" route group in app/Providers/RouteServiceProvider.php
With namespace auto prefixing
// app/Providers/RouteServiceProvider.php

protected function mapHandlersRoutes()
{
    Route::middleware('web')
         ->namespace('App\Http\Handlers')
         ->group(base_path('routes/handlers.php'));
}
// app/Providers/RouteServiceProvider.php

public function map()
{
    $this->mapApiRoutes();

    $this->mapWebRoutes();
    
    $this->mapHandlersRoutes();

    //
}
// routes/handlers.php

Route::get('/post/{post}', 'ShowPost');
Without namespace auto prefixing
// app/Providers/RouteServiceProvider.php

protected function mapHandlersRoutes()
{
    Route::middleware('web')
         ->group(base_path('routes/handlers.php'));
}
// app/Providers/RouteServiceProvider.php

public function map()
{
    $this->mapApiRoutes();

    $this->mapWebRoutes();
    
    $this->mapHandlersRoutes();

    //
}
// routes/handlers.php

use App\Handlers\ShowPost;

Route::get('/post/{post}', ShowPost::class); // pretty sweet, isn't it? 😍

In web.php route file

  • Change the namespace for "web" group in RouteServiceProvider.php
// app/Providers/RouteServiceProvider.php

protected function mapWebRoutes()
{
    Route::middleware('web')
         ->namespace('App\Http') // pay attention here
         ->group(base_path('routes/web.php'));
}
  • Put request handlers and controllers in different route groups in routes/web.php file and prepend an appropriate namespace for each of them
// routes/web.php

Route::group(['namespace' => 'Handlers'], function () {
    Route::get('/posts/{post}', 'ShowPost');
    Route::delete('/posts/{post}', 'DestroyPost');
});

Route::group(['namespace' => 'Controllers'], function () {
    Route::get('/users', '[email protected]');
    Route::get('/users/{user}', '[email protected]');
});

Testing

You can run the tests with:

composer test

Changelog

Please see CHANGELOG for more information what has changed recently.

Contributing

Please see CONTRIBUTING for details.

License

The MIT License (MIT). Please see License File for more information.


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