Laravel 5.6 does is exists the way to pass some custom variable to Http Resource collection?

Model

class Entity extends Model
{
    ...
}

EntityResource (the goal is to set theese resource fields dynamically)

public function toArray($request)
{        
    $fields = Field::byClassName(Entity::class)->get();

    foreach ($fields as $item) {
        $resource[$item->name] = data_get($this->resource, $item->name);
    }

    return $resource;
}

But, when I receive by this way resource collection, I have too many queries to db

$fields = Field::byClassName(Entity::class)->get();

as many as have resource items.

So, that would be good, if I set variable $fields (this collection is just some mapping of data) inside my controller and after pass it to resource collection method, some like this:

$fields = Field::byClassName(Entity::class)->get();
$entities = EntityResource::collection(Entity::all(), $fields); //doesn't work

Thanks

via Chebli Mohamed