API Resource with & returning columns

Two part question, the below code is a API Resource which returns transformed data from API.

I have included a "with" function, but the response doesn't include the "with" it doesn't work?

Secondly, is there a better way of including the current resource columns, as the frontend requires it.

Currently, I just return a columns array with the correct columns using "with" but the "with" doesns't work.

<?php

namespace App\Http\Resources;

use Illuminate\Http\Resources\Json\JsonResource;

class PrescriptionResource extends JsonResource
{
    /**
     * Transform the resource into an array.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return array|\Illuminate\Contracts\Support\Arrayable|\JsonSerializable
     */
    public function toArray($request)
    {
        return [
            'id' => $this->id,
            'prescription' => $this->name,
            'quantity' => $this->quantity,
            'cost' => $this->cost,
            'repeat' => $this->repeat,
            'company_id' => $this->company->id,
            'company' => $this->company->name,
            'location_id' => $this->location->id,
            'location' => $this->location->name,
            'manufacturer_id' => $this->manufacturer->id,
            'manufacturer' => $this->manufacturer->name, 
            'practice_id' => $this->practice->id,
            'practice' => $this->practice->name, 
            'prescriber_id' => $this->prescriber->id,
            'prescriber' => $this->prescriber->name,   
            'created_at' => $this->created_at,
            'updated_at' => $this->updated_at,                                        
        ];
    }

    /**
     * Get additional data that should be returned with the resource array.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return array
     */
    public function with($request)
    {
        return [
            'columns' => [
                'id',
                'prescription',
                'quantity',
                'cost',
                'repeat',
                'company_id',
                'company',
                'location_id',
                'location',
                'manufacturer_id',
                'manufacturer',
                'practice_id',
                'practice',
                'prescriber_id',
                'prescriber',
                'created_at',
                'updated_at',   
            ],
        ];
    }    
}

    /**
     * Display a listing of the resource.
     *
     */
    public function index()
    {
        $prescriptions = Prescription::paginate(5);

        return PrescriptionResource::collection($prescriptions);
    }

{
"data": [],
"links": {},
"meta": {
"current_page": 1,
"from": 1,
"last_page": 181,
"links": [],
"path": "https://.io/project/public/prescriptions",
"per_page": 5,
"to": 5,
"total": 904
}
}

No "columns" array included with "with" functin.