snipe-it/app/Http/Controllers/Accessories/AccessoryCheckoutController.php

<?php

namespace App\Http\Controllers\Accessories;

use App\Events\CheckoutableCheckedOut;
use App\Http\Controllers\Controller;
use App\Models\Accessory;
use App\Models\User;
use Carbon\Carbon;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Input;

class AccessoryCheckoutController extends Controller
{
    /**
     * Return the form to checkout an Accessory to a user.
     *
     * @author [A. Gianotto] [<snipe@snipe.net>]
     * @param  int $accessoryId
     * @return View
     * @throws \Illuminate\Auth\Access\AuthorizationException
     */
    public function create($accessoryId)
    {
        // Check if the accessory exists
        if (is_null($accessory = Accessory::find($accessoryId))) {
            // Redirect to the accessory management page with error
            return redirect()->route('accessories.index')->with('error', trans('admin/accessories/message.not_found'));
        }

        if ($accessory->category) {
            $this->authorize('checkout', $accessory);

            // Get the dropdown of users and then pass it to the checkout view
            return view('accessories/checkout', compact('accessory'));
        }

        return redirect()->back()->with('error', 'The category type for this accessory is not valid. Edit the accessory and select a valid accessory category.');
    }

    /**
     * Save the Accessory checkout information.
     *
     * If Slack is enabled and/or asset acceptance is enabled, it will also
     * trigger a Slack message and send an email.
     *
     * @author [A. Gianotto] [<snipe@snipe.net>]
     * @param Request $request
     * @param  int $accessoryId
     * @return Redirect
     * @throws \Illuminate\Auth\Access\AuthorizationException
     */
    public function store(Request $request, $accessoryId)
    {
        // Check if the accessory exists
        if (is_null($accessory = Accessory::find($accessoryId))) {
            // Redirect to the accessory management page with error
            return redirect()->route('accessories.index')->with('error', trans('admin/accessories/message.user_not_found'));
        }

        $this->authorize('checkout', $accessory);

        if (! $user = User::find($request->input('assigned_to'))) {
            return redirect()->route('accessories.checkout.show', $accessory->id)->with('error', trans('admin/accessories/message.checkout.user_does_not_exist'));
        }

        // Update the accessory data
        $accessory->assigned_to = e($request->input('assigned_to'));

        $accessory->users()->attach($accessory->id, [
            'accessory_id' => $accessory->id,
            'created_at' => Carbon::now(),
            'user_id' => Auth::id(),
            'assigned_to' => $request->get('assigned_to'),
            'note' => $request->input('note'),
        ]);

        $checkedout=DB::table('accessories_users')->where('accessory_id', '=', $accessory->id)->count();
        $available=DB::table('accessories')->where('id', '=', $accessory->id)->first('qty');

        if($checkedout >= $available->qty){

            return redirect()->route('accessories.index')->with('error', trans('admin/accessories/message.checkout.unavailable'));
        }

        DB::table('accessories_users')->where('assigned_to', '=', $accessory->assigned_to)->where('accessory_id', '=', $accessory->id)->first();

        event(new CheckoutableCheckedOut($accessory, $user, Auth::user(), $request->input('note')));

        // Redirect to the new accessory page
        return redirect()->route('accessories.index')->with('success', trans('admin/accessories/message.checkout.success'));
    }
}