Laravel購物車是爲所有用戶

Question

所以我嘗試創建laravel商店相同的，但我有一個購物車的問題。如果用戶在購物車中添加商品，則所有用戶都會更改。所以，如果我想補充一個項目，然後註銷用戶從X和登錄用戶Y，它們具有相同的車。
我莫名其妙新Laravel，我真不知道這裏有什麼問題。感謝幫助！

車

<?php 

namespace App; 

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

產品控制器

<?php 

namespace App\Http\Controllers; 

use App\Cart; 
use App\Product; 
use Illuminate\Http\Request; 
use Session; 
use Illuminate\Support\Facades\DB; 

class ProductController extends Controller 
{ 
    public function getIndex() 
    { 
     $products = Product::all(); 
     return view('shop.index', ['products' => $products]); 
    } 

    public function getAddToCart(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); 
     return redirect()->route('product.index'); 
    } 

    public function getAddQty(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); 
     return redirect()->route('product.shoppingCart'); 
    } 

    public function getReduceByOne($id) { 
     $oldCart = Session::has('cart') ? Session::get('cart') : null; 
     $cart = new Cart($oldCart); 
     $cart->reduceByOne($id); 
     if (count($cart->items) > 0) { 
      Session::put('cart', $cart); 
     } else { 
      Session::forget('cart'); 
     } 
     return redirect()->route('product.shoppingCart'); 
    } 

    public function getRemoveItem($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()->route('product.shoppingCart'); 
    } 

    public function getCart(){ 
     if(!Session::has('cart')){ 
      return view('shop.shopping-cart'); 
     } 
     $oldCart = Session::get('cart'); 
     $cart = new Cart($oldCart); 
     $total = $cart->totalPrice; 
     $count = count($cart->items); 
     Session::put('cart', $cart); 
     return view('shop.shopping-cart', ['products' => $cart->items, 'totalPrice' => $cart->totalPrice, 'total' => $total, 'count' => $count]); 
    } 

    public function getCheckout() 
    { 
     if(!Session::has('cart')){ 
      return view('shop.shopping-cart'); 
     } 
    $oldCart = Session::get('cart'); 
    $cart = new Cart($oldCart); 
    $total = $cart->totalPrice; 
    return view('shop.checkout',[ 'total' => $total]); 
    } 

    public function deleteProduct(Request $request, $id){ 
     $product = Product::find($id); 
     $oldCart = Session::has('cart') ? Session::get('cart'): null; 
     $cart = new Cart($oldCart); 

     session()->pull('product', $product->id); 
     $request->session()->put('cart', $cart); 

     return redirect()->route('product.shoppingCart'); 
    } 
} 

用戶控制器

<?php 

namespace App\Http\Controllers; 

use App\User; 
use Illuminate\Http\Request; 
use App\Http\Requests; 
use Auth; 
Use Session; 
use App\Cart; 

class UserController extends Controller 
{ 
    public function getSignup() 
    { 
     return view('user.signup'); 
    } 

    public function postSignup(Request $request) 
    { 
     $this->validate($request, [ 
      'sex' => 'required', 
      'firstname' => 'required', 
      'lastname' => 'required', 
      'email' => 'email|required|unique:users', 
      'password' => 'required|min:4' 
     ]); 

     $user = new User([ 
      'sex' => $request->input('sex'), 
      'firstname' => $request->input('firstname'), 
      'lastname' => $request->input('lastname'), 
      'email' => $request->input('email'), 
      'password' => bcrypt($request->input('password')) 
     ]); 
     $user->save(); 
     Auth::login($user); 

     return redirect()->route('user.profile'); 
    } 
    public function getSignin() 
    { 
     return view('user.login'); 
    } 

    public function postSignin(Request $request){ 
     $this->validate($request, [ 
      'email' => 'email|required', 
      'password' => 'required|min:4' 
     ]); 

    if(Auth::attempt([ 
     'email' => $request->input('email'), 
     'password' => $request->input('password')])){ 

     return redirect()->route('user.profile'); 
    } 
     return redirect()->back(); 
    } 

    public function getProfile(){ 
     $user = User::all(); 

     return view('user.profile',['user' => $user]); 
    } 

    public function getLogout(){ 

     Auth::logout(); 

     return redirect()->route('product.index'); 
    } 
} 

Answer 1

在Laravel的Ses如果您使用相同的選項卡切換用戶，則sion變量仍然存在。 所以，如果你保存屬於用戶X任何會話變量，它仍然會在那裏，當用戶Y登錄英寸Reference

那麼，你就需要在用戶註銷時使用Session::forget('key')明確移除用戶X會話

Session::forget('cart'); 

但是，這將創建一個問題是，每當用戶退出應用程序的他/她的購物車是空的。要解決此問題，您可能需要將購物車與用戶標識相關聯。

一種方式可以是USER_ID添加到您的會話變量的關鍵。

同時加入購物車會話：

$user_id = /*get user_id*/; 
Session::put($user_id.'cart', $cart); 

在檢索購物車：

$user_id = /*get user_id*/; 
Session::get($user_id.'cart', $cart); 

而不是使用會話存儲車的，我想你應該創建一個用於存儲車表並使用外鍵來引用用戶。