Fracture

Fracture is a library to make your Laravel-based API response more consistent., _(*1)

Installation

composer require flipboxstudio/api-fracture

Configuration

Add this line to your service provider list:, _(*2)

Flipbox\Fracture\FractureServiceProvider::class,

After that, run:, _(*3)

php artisan vendor:publish

This command will copy an empty fracture.php configuration into your config directory. You may need to read this file for more custom configuration., _(*4)

Optional

Add this line to your facade list:, _(*5)

'Fracture' => Flipbox\Fracture\Facades\Fracture::class,

Usage

Fracture will override Laravel Controller invoke style. So, to make this feature works on your project, you need to change your base controller. Locate this file at:, _(*6)

app/Http/Controllers/Controller.php

Change this file into:, _(*7)

<?php

namespace App\Http\Controllers;

use Illuminate\Foundation\Bus\DispatchesJobs;
use Illuminate\Foundation\Validation\ValidatesRequests;
use Illuminate\Foundation\Auth\Access\AuthorizesRequests;
use Flipbox\Fracture\Routing\Controller as FractureController;

class Controller extends FractureController
{
    use AuthorizesRequests, DispatchesJobs, ValidatesRequests;
}

And you ready to rock! Below is example using fracture., _(*8)

<?php

namespace App\Http\Controllers\Api;

use App\User;
use App\Http\Requests;
use Illuminate\Http\Request;
use App\Http\Controllers\Controller;

class UserController extends Controller
{
    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index()
    {
        Fracture::setMessage('user_list_fetched');

        return User::all(); // identical with Fracture::responseCollection(User::all(), 'user_list_fetched')
    }

    /**
     * Display the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function show($id)
    {
        Fracture::setMessage('user_fetched');

        return User::findOrFail($id); // identical with Fracture::responseItem(User::findOrFail($id), 'user_fetched')
    }

Fracture has it's own default transformer which you can configure it on fracture.php config file. From above controller (with fracture default transformer), here's your response transformed into:, _(*9)

{
  "success": true,
  "data": {
    "data": [
      {
        "id": 1,
        "name": "Krisan Alfa Timur",
        "email": "alfa@flipbox.co.id",
        "created_at": "2016-08-29 07:01:08",
        "updated_at": "2016-08-29 11:37:10",
        "type": "user"
      }
    ]
  },
  "message": "user_list_fetched"
}

To configure your transformer, Fracture will determine the object returned from controller. So, to transform your App\User object, you need to configure the transformer in fracture.php, file inside transformers, add app_user information there:, _(*10)

<?php

return [

    'transformers' => [

        'app_user' => [
            'class' => App\Transformers\UserTransformer::class,
        ],

    ],


    // [... OMITTED ...]

];

Fracture will automatically camel_case your current transformer to determine which config should it use. So for App\User resource type, it will parsed to app_user. Inside that key, give it an array key-value based with class value as it's transformer. Here's a basic transformer:, _(*11)

<?php

namespace App\Transformers;

use URL;
use App\User;
use League\Fractal\TransformerAbstract;

class UserTransformer extends TransformerAbstract
{
    public function transform(User $user)
    {
        return [
            'type' => 'user',
            'id' => (int) $user->id,
            'name' => (string) $user->name,
            'links' => [[
                'rel' => 'self',
                'type' => 'api',
                'uri' => URL::to('/api/resource/user/'.$user->id),
            ]],
        ];
    }
}

From the above transformer, the response will be transformed into:, _(*12)

{
  "success": true,
  "data": [
    {
      "type": "user",
      "id": "1",
      "attributes": {
        "name": "Krisan Alfa Timur",
        "links": [
          {
            "rel": "self",
            "type": "api",
            "uri": "http://laravel.ivory.dev/api/resource/user/1"
          }
        ]
      }
    }
  ],
  "message": "user_list_fetched"
}

Set Transformer on The Fly

You can set the transformer just before the response being sent to client. To do so, before return any response in controller method, you may call Fracture::setTransformer method:, _(*13)

<?php

use App\Transformers\UserTransformer;

Fracture::setTransformer(UserTransformer::class);
// Or
Fracture::setTransformer(new UserTransformer());

Route Transformer

You also can tell Fracture to use certain transformer via route actions:, _(*14)

<?php

Route::get('/user', [
    'uses' => 'UserController@index',
    'transformer' => App\Transformers\UserTransformer::class,
    'middleware' => ['auth:api'],
    'as' => 'user.list'
]);

Custom HTTP Status Code

<?php

return Fracture::responseCollection(
    $collection, // Collection
    'user_list', // API Message
    true, // API success status
    200, // HTTP status code
    ['Custom-Header' => 'Flipbox'] // Your header goes here
);

return Fracture::responseItem(
    $item, // Item
    'user_info', // API Message
    true, // API success status
    200, // HTTP status code
    ['Custom-Header' => 'Flipbox'] // Your header goes here
);

Generating Error Response

Here's a snippet to generate error response:, _(*15)

<?php

return Fracture::responseError(
    'awww_snap', // API Message
    new \Exception('something_goes_wrong') // An exception instance
);

From that code, the response is:, _(*16)

{
  "success": false,
  "data": {
    "type": "error",
    "code": 0
  },
  "message": "awww_snap"
}

In debug mode:, _(*17)

{
  "success": false,
  "data": {
    "type": "error",
    "code": 0,
    "message": "something_goes_wrong",
    "trace": [
      "#0 [internal function]: App\\Http\\Controllers\\Api\\UserController->index()",
      // [... OMITTED ...]
    ]
  },
  "message": "awww_snap"
}