Passing a new variable to Resource from Controller | Laravel - laravel

Question

I have an API resources in my code,
what i wanted to do is to pass a new data to be return in Resource Collection
Controller:
public function index(Request $request)
{
// #TODO implement
$books = Book::with('authors')->paginate(5);
$pass = 1;
return BookResource::collection($books, $pass, 200);
}
my Resources:
public function toArray($request)
{
return [
// #TODO implement
'id' => $this->id,
'isbn' => $this->isbn,
'title' => $this->title,
'description' => $this->description,
'published_year' => $this->published_year,
'authors' => AuthorResource::collection($this->authors),
'review' => BookReviewResource::collection($this->reviews),
'pass' => $this->pass
];
}
I want the $pass, can be returned in Resources,
how do i achieve that?

Answer 1

Try adding metadata to the collection using additional:
return BookResource::collection($books)->additional([
‘pass’ => $pass,
]);

Answer 2

BookResource
class BookResource extends Resource {
protected $pass;
public function pass($value){
$this->pass = $value;
return $this;
}
public function toArray($request){
return [
'id' => $this->id,
'isbn' => $this->isbn,
'title' => $this->title,
'description' => $this->description,
'published_year' => $this->published_year,
'authors' => AuthorResource::collection($this->authors),
'review' => BookReviewResource::collection($this->reviews),
'pass' => $this->pass
];
}
public static function collection($resource){
return new BookResourceCollection($resource);
}
}
BookResourceCollection
class BookResourceCollection extends ResourceCollection {
protected $pass;
public function pass($value){
$this->pass = $value;
return $this;
}
public function toArray($request){
return $this->collection->map(function(BookResource $resource) use($request){
return $resource->pass($this->pass)->toArray($request);
})->all();
}
Pass params
BookResource::collection($books)->pass(1);
Or using this:
http://localhost:3000/api/books?pass=1
public function toArray($request) {
$pass = $request->pass;
return [
'id' => $this->id,
'isbn' => $this->isbn,
'title' => $this->title,
'description' => $this->description,
'published_year' => $this->published_year,
'authors' => AuthorResource::collection($this->authors),
'review' => BookReviewResource::collection($this->reviews),
'pass' => $pass
];
}