使用带有laravel 5.1的dingo / APi + Fractal /变换器的laravel原始查询

Question

I have an ArticleCommentsController with an index method

class ArticleCommentsController extends BaseController
{
    public function index($id)
    {

        $comments = DB::table('comments')
            ->leftJoin('users', 'users.id', '=', 'comments.user_id')
            ->where('comments.article_id', '=', $id)
            ->get();

         return $this->response->item($comments, new CommentTransformer);
    }
}

This is the transformer class

namespace App\Transformers;

use League\Fractal\TransformerAbstract;

class CommentTransformer extends TransformerAbstract{
    public function transform($comment)
    {
        return $comment; //simplified
    }
}

The response is the following error:

get_class() expects parameter 1 to be object, array given.

Obviously, i need to send an instance of the comment object when calling Fractal\transform but i don't know how to do that since laravel's raw queries only return an array or an instance of the QueryBuilder class.

Answer 1

Sadly, the item method on the response object seems to require and object and not an array. Using the array method will work, but won't use any transformer you pass.

So, I think you might get away using ArrayObject, as follow:

return $this->response->item(new ArrayObject($comments), new CommentTransformer);

Remember to put a use ArrayObject; at the top of the file.