Question

我在一个博客项目中。我的Post模型有这个API资源

return [
    'id' => $this->id,
    'title' => $this->title,
    'body' => $this->body,
    'date' => $this->date
];

但是我不希望在收到帖子集时得到'body' => $this->body，因为我只在我要显示帖子时才使用它，而不是列出它们

我该怎么做？我应该使用资源集合吗？

更新： makeHidden应该可以，但不是因为我们有Illuminate\Support\Collection而不是Illuminate\Database\Eloquent\Collection，我该如何进行强制转换或使API资源的collection方法返回Illuminate\Database\Eloquent\Collection实例？

Answer 1

我假设您有一个PostResource，如果没有，您可以生成一个：

php artisan make:resource PostResource

覆盖PostResource上的收集方法并过滤字段：

class PostResource extends Resource
{
    protected $withoutFields = [];

    public static function collection($resource)
    {
        return tap(new PostResourceCollection($resource), function ($collection) {
            $collection->collects = __CLASS__;
        });
    }

    // Set the keys that are supposed to be filtered out
    public function hide(array $fields)
    {
        $this->withoutFields = $fields;
        return $this;
    }

    // Remove the filtered keys.
    protected function filterFields($array)
    {
        return collect($array)->forget($this->withoutFields)->toArray();
    }

    public function toArray($request)
    {
        return $this->filterFields([
            'id' => $this->id,
            'title' => $this->title,
            'body' => $this->body,
            'date' => $this->date
        ]);
    }
}

您需要创建一个PostResourceCollection

php artisan make:resource --collection PostResourceCollection

此处正在使用隐藏字段处理收藏集

class PostResourceCollection extends ResourceCollection
{
    protected $withoutFields = [];

    // Transform the resource collection into an array.
    public function toArray($request)
    {
        return $this->processCollection($request);
    }

    public function hide(array $fields)
    {
        $this->withoutFields = $fields;
        return $this;
    }
    // Send fields to hide to UsersResource while processing the collection.
    protected function processCollection($request)
    {
        return $this->collection->map(function (PostResource $resource) use ($request) {
            return $resource->hide($this->withoutFields)->toArray($request);
        })->all();
    }
}

现在在PostController中，您可以调用hide方法，将字段隐藏起来：

public function index()
{
    $posts = Post::all();
    return PostResource::collection($posts)->hide(['body']);
}

您应该获得没有正文字段的帖子集合。

Answer 2

There is a method for conditionally adding attribute to resource as shown below

return [
'attribute' => $this->when(Auth::user()->isAdmin(), 'attribute-value'),
];

I hope this will help you.

使用Laravel API资源时如何删除集合中的某些值

2 个答案: