Endpoint to update the quantity

MedicationController

<?php

Class MedicationController extends Controller {
  public function update(MedicationInventoryRequest $request)
   {
       $validated = $request->validated();
       $this->updateInventory($validated);
         return redirect()->back(303)
           ->with('message', 'Medication quantity added successfully');
   }
}

// FormRequest
public function rules()
   {
       return [
           'medication_id' => 'required|integer',
           'quantity' => 'required|integer',
           'action' => 'required',
       ];
   }