在laravel购物车中存储期权价格与会话

Question

我使用laravel 5.5并且我有一个在会话中存储数据的购物车到目前为止一切正常，现在我想添加color size等选项，每个都有不同的价格这个价格应该加到我的购物车上。

问题是我无法在购物车中获得价格。

这是我的Cart模型中的会话存储/删除/等：

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Cart extends Model
{
    protected $table = 'carts';

      public $items = null;
      public $totalQty = 0;
      public $totalPrice = 0;
      public function __construct($oldCart)
      {
          if ($oldCart) {
              $this->items = $oldCart->items;
              $this->totalQty = $oldCart->totalQty;
              $this->totalPrice = $oldCart->totalPrice;
          }
      }
      public function add($item, $id) {
          $storedItem = ['qty' => 0, 'price' => $item->price, 'item' => $item];
          if ($this->items) {
              if (array_key_exists($id, $this->items)) {
                  $storedItem = $this->items[$id];
              }
          }
          $storedItem['qty']++;
          $storedItem['price'] = $item->price * $storedItem['qty'];
          $this->items[$id] = $storedItem;
          $this->totalQty++;
          $this->totalPrice += $item->price;
      }

      public function reduceByOne($id)
      {
          $this->items[$id]['qty']--;
          $this->items[$id]['price'] -= $this->items[$id]['item']['price'];
          $this->totalQty--;
          $this->totalPrice -= $this->items[$id]['item']['price'];

          if ($this->items[$id]['qty'] <= 0) {
            unset($this->items[$id]);
          }
      }

      public function increaseByOne($id)
      {
          $this->items[$id]['qty']++;
          $this->items[$id]['price'] += $this->items[$id]['item']['price'];
          $this->totalQty++;
          $this->totalPrice += $this->items[$id]['item']['price'];
      }

      public function removeItem($id)
      {
          $this->totalQty -= $this->items[$id]['qty'];
          $this->totalPrice -= $this->items[$id]['price'];
          unset($this->items[$id]);
      }

    protected $fillable = [
        'coupon_code',
    ];

    public function product(){
       return $this->belongsTo(Product::class);
    }
}

这是我的route

Route::resource('/cart', 'CartController', ['except' => ['show', 'create']]);

这是我的CartController

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Cart;
use App\Product;
use Auth;
use Session;
use App\User;

class CartController extends Controller
{

    public function __construct(){
        $this->middleware('auth');
    }


    public function AddToCart(Request $request, $id)
    {
        $product = Product::find($id);
        $oldCart = Session::has('cart') ? Session::get('cart') : null;
        $cart = new Cart($oldCart);
        $cart->add($product, $product->id);
        $request->session()->put('cart', $cart);
        Session::flash('flash_message', 'Item added to your cart successfully.');
        return redirect()->back();
    }

    public function reduceByOne($id)
    {
      $oldCart = Session::has('cart') ? Session::get('cart') : null;
      $cart = new Cart($oldCart);
      $cart->reduceByOne($id);
      Session::put('cart', $cart);
      return redirect()->back();
    }
    public function increaseByOne($id)
    {
      $oldCart = Session::has('cart') ? Session::get('cart') : null;
      $cart = new Cart($oldCart);
      $cart->increaseByOne($id);
      Session::put('cart', $cart);
      return redirect()->back();
    }

    public function removeItem($id)
    {
      $oldCart = Session::has('cart') ? Session::get('cart') : null;
      $cart = new Cart($oldCart);
      $cart->removeItem($id);

      if (count($cart->items) > 0) {
        Session::put('cart', $cart);
      } else {
        Session::forget('cart');
      }


      return redirect()->back();
    }

    public function index()
    {
      $user = Auth()->user();
      if (!Session::has('cart')) {
        return view('frontend.cart');
      }
      $oldCart = Session::get('cart');
      $cart = new Cart($oldCart);
      $total = $cart->totalPrice;
      return view('frontend.cart', ['products' => $cart->items, 'totalPrice' => $cart->totalPrice, 'user' => $user, 'total' => $total]);
    }

    /**
     * Store a newly created resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request)
    {
        //
    }

    /**
     * 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)
    {
        //
    }
}

这是我在刀片中的Options代码：

<div class="options">
<h3>options:</h3>
<table class="table table-bordered table-striped">
<tbody>
@foreach($product->suboptions as $option)
<tr>
<th style="width:150px;">{{ $option->option->title }}</th>
<td class="text-left">
{{ Form::checkbox('option', '$option->id') }}{{$option->title}}-{{$option->price}}
</td>
</tr>
@endforeach
</tbody>
</table>
</div>