From 50460daa9e18fb3620692127ceabc87f4e1c5dac Mon Sep 17 00:00:00 2001
From: Aaron Quint <aaron@quirkey.com>
Date: Fri, 1 Jan 2010 17:44:38 -0500
Subject: [PATCH] Store the cart in session()

---
 index.html                                 | 1 +
 javascripts/json_store.js                  | 9 ++++++---
 javascripts/sammy/plugins/sammy.storage.js | 4 ++--
 3 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/index.html b/index.html
index 69bb561..34ba293 100644
--- a/index.html
+++ b/index.html
@@ -19,6 +19,7 @@ <h1>The JSON Store</h1>
 <script src="javascripts/jquery-1.3.2.min.js" type="text/javascript" charset="utf-8"></script>
 <script src="javascripts/sammy/sammy.js" type="text/javascript" charset="utf-8"></script>
 <script src="javascripts/sammy/plugins/sammy.template.js" type="text/javascript" charset="utf-8"></script>
+<script src="javascripts/sammy/plugins/sammy.json.js" type="text/javascript" charset="utf-8"></script>
 <script src="javascripts/sammy/plugins/sammy.storage.js" type="text/javascript" charset="utf-8"></script>
 <script src="javascripts/json_store.js" type="text/javascript" charset="utf-8"></script>
 </body>
diff --git a/javascripts/json_store.js b/javascripts/json_store.js
index 4561e33..f41070e 100644
--- a/javascripts/json_store.js
+++ b/javascripts/json_store.js
@@ -33,17 +33,20 @@
       this.partial('templates/item_detail.template');
     });
 
-    // initialize the cart
-    var cart = {};
-    
     this.post('#/cart', function(context) {
       var item_id = this.params['item_id'];
+      // fetch the current cart
+      var cart  = this.session('cart', function() {
+        return {};
+      });
       if (!cart[item_id]) {
         // this item is not yet in our cart
         // initialize its quantity with 0
         cart[item_id] = 0;
       }
       cart[item_id] += parseInt(this.params['quantity']);
+      // store the cart
+      this.session('cart', cart);
       this.log("The current cart: ", cart);
     });
     
diff --git a/javascripts/sammy/plugins/sammy.storage.js b/javascripts/sammy/plugins/sammy.storage.js
index 856ab45..bcfd22b 100644
--- a/javascripts/sammy/plugins/sammy.storage.js
+++ b/javascripts/sammy/plugins/sammy.storage.js
@@ -232,7 +232,7 @@
   };
   $.extend(Sammy.Store.LocalStorage.prototype, {
     isAvailable: function() {
-      return ('localStorage' in window);
+      return ('localStorage' in window) && window.location.protocol != 'file:';
     },
     exists: function(key) {
       return (this.get(key) != null);
@@ -413,7 +413,7 @@
     
     this.helpers({
       store: function() {
-        return this.app.apply(this.app, arguments);
+        return this.app.store.apply(this.app, arguments);
       }
     });
   };