Heimdall/app/Http/Controllers/ApiItemController.php

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Item;
use App\SettingUser;
use App\User;

class ApiItemController extends Controller
{
    protected $api_key;
    protected $user;

    function __construct(Request $request) {
        $this->middleware('apikey');
        
        $key = $request->input('api_key');
        if ($key) {
            $details = SettingUser::where('setting_id', 12)->where('uservalue', $key)->first();
            $this->api_key = $key;
            $this->user = User::find($details->user_id);
        }
    }

    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index()
    {
        return $this->user->items;
    }

    /**
     * Show the form for creating a new resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function create()
    {
        
    }

    /**
     * Store a newly created resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request)
    {
        $request->merge([
            'user_id' => $this->user->id
        ]);
        // die(print_r($request->all()));
        Item::create($request->all());
    }

    /**
     * Display the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function show($id)
    {
        //
    }

    /**
     * Show the form for editing the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function edit($id)
    {
        //
    }

    /**
     * Update the specified resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function update(Request $request, $id)
    {
        //
    }

    /**
     * Remove the specified resource from storage.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function destroy($id)
    {
        //
    }
}