<?php namespace App\Http\Resources; use Illuminate\Http\Resources\Json\Resource; class UsersResource extends Resource { /** * @var array */ protected $withoutFields = []; /** * Transform the resource into an array. * * @param \Illuminate\Http\Request * @return array */ public function toArray($request) { return $this->filterFields([ 'id' => $this->id, 'name' => $this->name, 'email' => $this->email ]); } /** * Set the keys that are supposed to be filtered out. * * @param array $fields * @return $this */ public function hide(array $fields) { $this->withoutFields = $fields; return $this; } /** * Remove the filtered keys. * * @param $array * @return array */ protected function filterFields($array) { return collect($array)->forget($this->withoutFields)->toArray(); } }
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。
{ "data": { "name": "Mr. Frederik Morar", "email": "darryl.wilkinson@example.org" } }
5- UsersResourceCollection 类
执行项目集合中的 index 方法, 我们需要作出如下修改:
(1) 确保 UsersResource::collection 返回 UsersResourceCollection 实例
(2) 在 UsersResourceCollection 上公开 hide 方法
(3) 将隐藏的字段传递给 UsersResource
关于 (1), 我们只需要重写 UsersResource 中的 collection 方法
<?php namespace App\Http\Resources; use Illuminate\Http\Resources\Json\Resource; class UsersResource extends Resource { public static function collection($resource) { return tap(new UsersResourceCollection($resource), function ($collection) { $collection->collects = __CLASS__; }); } /** * @var array */ protected $withoutFields = []; /** * Transform the resource into an array. * 将资源转换为一个数组 * * @param \Illuminate\Http\Request * @return array */ public function toArray($request) { return $this->filterFields([ 'id' => $this->id, 'name' => $this->name, 'email' => $this->email ]); } /** * Set the keys that are supposed to be filtered out. * 设置需要隐藏过滤掉的键 * * @param array $fields * @return $this */ public function hide(array $fields) { $this->withoutFields = $fields; return $this; } /** * Remove the filtered keys. * 删除隐藏的键 * * @param $array * @return array */ protected function filterFields($array) { return collect($array)->forget($this->withoutFields)->toArray(); } }
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。.
<?php namespace App\Http\Resources; use Illuminate\Http\Resources\Json\ResourceCollection; class UsersResourceCollection extends ResourceCollection { /** * @var array */ protected $withoutFields = []; /** * Transform the resource collection into an array. * * @param \Illuminate\Http\Request * @return array */ public function toArray($request) { return $this->processCollection($request); } public function hide(array $fields) { $this->withoutFields = $fields; return $this; } /** * Send fields to hide to UsersResource while processing the collection. * 将隐藏字段通过 UsersResource 处理集合 * * @param $request * @return array */ protected function processCollection($request) { return $this->collection->map(function (UsersResource $resource) use ($request) { return $resource->hide($this->withoutFields)->toArray($request); })->all(); } }
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