cssd-back/app/Policies/ItemPolicy.php

<?php

namespace App\Policies;

use App\User;
use App\Item;

class ItemPolicy
{
    public function showAll(User $User)
    {
        if($User->hasRole('Admin'))
            return true;
    }
    public function delete(User $User, Item $Item)
    {
        if($User->hasRole('Admin') || ($User->hasRole('Supervisor') && $Item->user->medical_center_id == $User->medical_center_id))
            return true;
    }

    public function update(User $User, Item $Item)
    {
        if($User->hasRole('Admin') || ($User->hasRole('Supervisor') && $Item->user->medical_center_id == $User->medical_center_id))
            return true;
    }

    public function store(User $User)
    {
        if($User->hasRole('Admin') || $User->hasRole('Supervisor'))
            return true;
    }

    public function changeStatus(User $User)
    {
        if($User->hasRole('Admin|Supervisor'))
            return true;
    }

    public function changeRepair(User $User)
    {
        if($User->hasRole('Admin|Supervisor'))
            return true;
    }
}