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POHow can I link a user with a shopping cart?
 

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  1. POHow can I link a user with a shopping cart?
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    <p>My app has both users and a shopping cart.</p> <p>Theres currently no link between users and shopping carts. </p> <p>At the moment regardless of if a user is logged in or not there is only one shopping cart available, the current_cart is created when a product is added and an order_transaction is created when the cart is paid for (success or fail). If successful, a new cart will be created the next time a product is added to the cart.</p> <p>How can I link a cart with a user, so each user has a new cart created for them when adding a product?</p> <p><b>application_controller</b></p> <pre><code> def current_user @current_user ||= User.find(session[:user_id]) if session[:user_id] end def current_cart if session[:cart_id] @current_cart ||= Cart.find(session[:cart_id]) session[:cart_id] = nil if @current_cart.purchased_at end if session[:cart_id].nil? @current_cart = Cart.create! session[:cart_id] = @current_cart.id end @current_cart end </code></pre> <p><b>routes</b> </p> <pre><code> get "log_in" =&gt; "sessions#new", :as =&gt; "log_in" get "log_out" =&gt; "sessions#destroy", :as =&gt; "log_out" get "sign_up" =&gt; "users#new", :as =&gt; "sign_up" get "cart" =&gt; "carts#show", :as =&gt; "current_cart" resources :orders resources :line_items resources :carts resources :products resources :order_transactions resources :sessions resources :users </code></pre> <p><b>line_items_controller</b></p> <pre><code>class LineItemsController &lt; ApplicationController def create @product = Product.find(params[:product_id]) @line_item = LineItem.create!(:cart =&gt; current_cart, :product =&gt; @product, :quantity =&gt; 1, :unit_price =&gt; @product.price) flash[:notice] = "Added #{@product.name} to cart." redirect_to current_cart_url end end </code></pre> <p>Thanks for any help its much appreciated!</p>
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