LaravelSession::insertUpdate() issues while using laravel moltin shopping cart - php

Question

I'm trying to use Moltin Cart in my Laravel 4 app:
I installed Moltin Cart through composer,
then added the Service Provider ('Moltin\Cart\CartServiceProvider')
and added the aliases ('Cart' => 'Moltin\Cart\Facade').
Now I want only logged in users to access the cart so I added
$this->beforeFilter('auth', array('only' => 'postAddToCart', 'getCart', 'getRemoveItem'));
in my storeController.
But I get this error when I try to access
Declaration of Moltin\Cart\Storage\LaravelSession::insertUpdate() must be compatible with Moltin\Cart\StorageInterface::insertUpdate(Moltin\Cart\Item\Line $item)
My Store Controller is :
<?php
class StoresController extends \BaseController {
public function __construct()
{
parent::__construct();
$this->beforeFilter('csrf', array('on' => 'post'));
$this->beforeFilter('auth', array('only' => 'postAddToCart', 'getCart', 'getRemoveItem'));
}
public function getIndex()
{
return View::make('stores.index')
->with('products', Product::take(4)->orderBy('created_at', 'DESC')->get());
}
public function getView($id)
{
return View::make('stores.view')
->with('product', Product::find($id));
}
public function getCategory($category_id)
{
return View::make('stores.category')
->with('products', Product::where('category_id', '=', $category_id)->paginate(6))
->with('category', Category::find($category_id));
}
public function getSearch()
{
$keyword = Input::get('keyword');
return View::make('stores.search')
->with('products', Product::where('title', 'LIKE', '%'. $keyword . '%')->get())
->with('keyword', $keyword);
}
public function postAddToCart()
{
$product = Product::find(Input::get('id'));
$qunatity = Input::get('qunatity');
Cart::insert(array(
'id' => $product->id,
'name' => $product->name,
'price' => $product->price,
'qunatity' => $qunatity,
'image' => $product->image
));
return Redirect::to('store/cart');
}
public function getCart()
{
return View::make('stores.cart')->with('products', Cart::contents());
}
public function getRemoveItem($identifier)
{
$product = Cart::item($identifier);
$product->remove();
return Redirect::to('store/cart');
}
}

Answer 1

The short answer:
Resume your installation assuming that moltin/cart and moltin/laravel-cart repositories are in sync.
The long answer:
As the error message states:
Moltin\Cart\StorageInterface::insertUpdate(Moltin\Cart\Item\Line $item)
Moltin\Cart\Storage\LaravelSession::insertUpdate()
don't have the same signature.
They should be in sync! The issue has nothing to do at all with your StoresController.
I checked:
https://github.com/moltin/cart/blob/master/src/Moltin/Cart/StorageInterface.php and
https://github.com/moltin/laravel-cart/blob/master/src/Moltin/Cart/Storage/LaravelSession.php
I find out that the signatures are OK as the time of my answer post.
namespace Moltin\Cart;
interface StorageInterface
{
/**
* Add or update an item in the cart
*
* #param Item $item The item to insert or update
* #return void
*/
public function insertUpdate(Item $item); // <<<< This is it!
...
}
namespace Moltin\Cart\Storage;
use Moltin\Cart\Item;
...
class LaravelSession implements \Moltin\Cart\StorageInterface
{
...
/**
* Add or update an item in the cart
*
* #param Item $item The item to insert or update
* #return void
*/
public function insertUpdate(Item $item) // <<<< This is it!
{
...
}
...
}
My guess is that you did your install when the repositories (knowing that moltin/cart is a dependency of moltin/laravel-cart) were not in sync for some reason.