PHP 在 Laravel 中动态隐藏 API 字段
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我最近在 Laravel Brasil 社区看到一个问题,结果比看起来更有趣。想象一下你有一个 UsersResource 用下面的实现: 1 <?php
2 namespace AppHttpResources;
3 use IlluminateHttpResourcesJsonResource;
4 class UsersResource extends Resource
5 {
6 /**
7 * Transform the resource into an array.
8 *
9 * @param IlluminateHttpRequest
10 * @return array
11 */
12 public function toArray($request)
13 {
14 return [
15 'id' => $this->id,16 'name' => $this->name,17 'email' => $this->email
18 ];
19 }
20 }
出于某种原因,您可能希望在另一个端点上重新使用该资源类,但隐藏email 字段。这篇文章就是告诉你如何实现这一点的。 如果你不知道 API Resources 是什么,请查看我之前关于这个的文章。 First Impression on API Resources composer create-project --prefer-dist laravel/laravel api-fields cd api-fields touch database/database.sqlite 编辑.env文件,删除数据库设置并使用 SQLite DB_CONNECTION=sqlite 1 php artisan migrate 2 php artisan make:resource UsersResource 3 php artisan make:resource --collection UsersResourceCollection 4 php artisan make:controller UsersController 5 php artisan tinker 6 factory(AppUser::class)->times(20)->create(); 7 quit 2- 路由 Route::apiResource('/users','UsersController');
3- 控制器 1 <?php
2 namespace AppHttpControllers;
3 use AppHttpResourcesUsersResource;
4 use AppUser;
5 class UsersController extends Controller
6 {
7 /**
8 * Display a listing of the resource.
9 *
10 * @param User $user
11 * @return IlluminateHttpResponse
12 */
13 public function index(User $user)
14 {
15 return UsersResource::collection($user->paginate())->hide(['id','email']);
16 }
17 /**
18 * Display a user.
19 *
20 * @param User $user
21 * @return IlluminateHttpResponse
22 */
23 public function show(User $user)
24 {
25 return UsersResource::make($user)->hide(['id']);
26 }
27 }
为了达到这个目的,我们需要 UsersResourceCollection 和UsersResource 同时知道如何处理 hide 调用。 4- UsersResource 类 1 <?php
2 namespace AppHttpResources;
3 use IlluminateHttpResourcesJsonResource;
4 class UsersResource extends Resource
5 {
6 /**
7 * @var array
8 */
9 protected $withoutFields = [];
10
11 /**
12 * Transform the resource into an array.
13 *
14 * @param IlluminateHttpRequest
15 * @return array
16 */
17 public function toArray($request)
18 {
19 return $this->filterFields([
20 'id' => $this->id,21 'name' => $this->name,22 'email' => $this->email
23 ]);
24 }
25 /**
26 * Set the keys that are supposed to be filtered out.
27 *
28 * @param array $fields
29 * @return $this
30 */
31 public function hide(array $fields)
32 {
33 $this->withoutFields = $fields;
34 return $this;
35 }
36 /**
37 * Remove the filtered keys.
38 *
39 * @param $array
40 * @return array
41 */
42 protected function filterFields($array)
43 {
44 return collect($array)->forget($this->withoutFields)->toArray();
45 }
46 }
大功告成! 现在我们可以访问 http://api.dev/api/users/1 ,你会发现响应中已经没有id 字段了。 1 {
2 "data": {
3 "name": "Mr. Frederik Morar",4 "email": "darryl.wilkinson@example.org"
5 }
6 }
5- UsersResourceCollection 类 (1) 确保 UsersResource::collection 返回 UsersResourceCollection 实例 1 <?php
2 namespace AppHttpResources;
3 use IlluminateHttpResourcesJsonResource;
4 class UsersResource extends Resource
5 {
6 public static function collection($resource)
7 {
8 return tap(new UsersResourceCollection($resource),function ($collection) {
9 $collection->collects = __CLASS__;
10 });
11 }
12
13 /**
14 * @var array
15 */
16 protected $withoutFields = [];
17 /**
18 * Transform the resource into an array.
19 * 将资源转换为一个数组
20 *
21 * @param IlluminateHttpRequest
22 * @return array
23 */
24 public function toArray($request)
25 {
26 return $this->filterFields([
27 'id' => $this->id,28 'name' => $this->name,29 'email' => $this->email
30 ]);
31 }
32 /**
33 * Set the keys that are supposed to be filtered out.
34 * 设置需要隐藏过滤掉的键
35 *
36 * @param array $fields
37 * @return $this
38 */
39 public function hide(array $fields)
40 {
41 $this->withoutFields = $fields;
42 return $this;
43 }
44 /**
45 * Remove the filtered keys.
46 * 删除隐藏的键
47 *
48 * @param $array
49 * @return array
50 */
51 protected function filterFields($array)
52 {
53 return collect($array)->forget($this->withoutFields)->toArray();
54 }
55 }
关于 (2) 和 (3) 我们需要修改 UsersResourceCollection 文件. 让我们公开 hide 方法并使用隐藏字段处理集合。. 1 <?php
2 namespace AppHttpResources;
3 use IlluminateHttpResourcesJsonResourceCollection;
4 class UsersResourceCollection extends ResourceCollection
5 {
6 /**
7 * @var array
8 */
9 protected $withoutFields = [];
10 /**
11 * Transform the resource collection into an array.
12 *
13 * @param IlluminateHttpRequest
14 * @return array
15 */
16 public function toArray($request)
17 {
18 return $this->processCollection($request);
19 }
20 public function hide(array $fields)
21 {
22 $this->withoutFields = $fields;
23 return $this;
24 }
25 /**
26 * Send fields to hide to UsersResource while processing the collection.
27 * 将隐藏字段通过 UsersResource 处理集合
28 *
29 * @param $request
30 * @return array
31 */
32 protected function processCollection($request)
33 {
34 return $this->collection->map(function (UsersResource $resource) use ($request) {
35 return $resource->hide($this->withoutFields)->toArray($request);
36 })->all();
37 }
38 }
就是这么简单! 现在我们访问 http://api.dev/api/users 看到返回结果中没有了 id 和 email 字段了如在 UsersController 中的指定方法 . 1 {
2 "data": [{
3 "name": "Mr. Frederik Morar"
4 }, {
5 "name": "Angel Daniel"
6 }, {
7 "name": "Brianne Mueller"
8 }], 9 "links": {
10 "first": "http://lab.php71/api-fields-2/public/api/users?page=1",11 "last": "http://lab.php71/api-fields-2/public/api/users?page=7",12 "prev": null,13 "next": "http://lab.php71/api-fields-2/public/api/users?page=2"
14 },15 "meta": {
16 "current_page": 1,17 "from": 1,18 "last_page": 7,19 "path": "http://api-fields.lab.php71/api/users",20 "per_page": 3,21 "to": 3,22 "total": 20
23 }
24 }
6- 总结 我不推荐过度重复去请求API资源,因为它很可能会把简单的事情变得更加复杂,所以说在请求的时候隐藏某些特定的字段是更简单、更合理的解决方案。 (编辑:安卓应用网) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |
