Detailed explanation of the responsive interface provided in Laravel 5.5 for responding to requests_php example

This article mainly introduces you to the relevant information about the responsive interface provided in Laravel 5.5 for responding to requests. The Laravel introduced through the sample code is very detailed and is very useful. Everyone's study or work has certain reference learning value. Friends who need it can follow the editor to learn Laravel .

Preface

Laravel 5.5 will also be the next LTS (long-term support) version. That means it has two years of fixes and three years of security updates. The same goes for Laravel 5.1, although its two years of bug-fix support will end this year.

Laravel 5.5 adds a new return type to routing: Responsable interface. This interface allows objects to be automatically converted into a standard HTTP response interface when returned from a controller or closure route. Any object that implements the Responsable interface must implement a method named toResponse(), which converts the object into an HTTP response object.

Look at the example:

##

use Illuminate\Contracts\Support\Responsable;

class ExampleObject implements Responsable
{
 public function construct($name = null)
 {
  $this->name = $name ?? 'Teapot'; 
 }

 public function status()
 {
  switch(strtolower($this->name)) {
   case 'teapot':
    return 418;
   default:
    return 200;
  }
 }

 public function toResponse()
 {
  return response(
   "Hello {$this->name}",
   $this->status(),
   ['X-Person' => $this->name]
  );
 }
}

Route::get('/hello', function() {
 return new ExampleObject(request('name'));
});

Framework, the Route class can now check when preparing the response content This type (that implements the Responsable interface):

if ($response instanceof Responsable) {
 $response = $response->toResponse();
}

Namespace Use multiple response types to organize your response content. You can refer to the following example. This example demonstrates how to support Posts (a collection of multiple instances):

posts = $posts;
 }

 public function toResponse()
 {
  return response()->json($this->transformPosts());
 }

 protected function transformPosts()
 {
  return $this->posts->map(function ($post) {
   return [
    'title' => $post->title,
    'description' => $post->description,
    'body' => $post->body,
    'published_date' => $post->published_at->toIso8601String(),
    'created' => $post->created_at->toIso8601String(),
   ];
  });
 }
}

Summary

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