shopping cart

app/views/books/index.html.erb

@@ -24,8 +24,8 @@
         <%= book.quantity %>
       </div>
       <div class='col s2'>
-        <% if logged_in? && book.quantity.positive? %>
-          <%= link_to 'Add', edit_book_path(book), class: "btn" %>
+        <% if logged_in? && book.quantity.positive? && !current_user.books.exists?(book.id) %>
+          <%= link_to 'Add', "book/#{book.id}/add_to_cart", method: :post, class: "btn" %>
         <% end %>
       </div>
 

app/views/books/shopping_cart.erb

@@ -0,0 +1,22 @@
+<div class='container'>
+  <div class='row'>
+    <div class='col s2'>Title</div>
+    <div class='col s3'>Authors</div>
+    <div class='col s1'>Price</div>
+  </div>
+  <% @books.each do |book| %>
+    <div class='row'>
+      <div class='col s2'>
+        <%= link_to book.title, book %>
+      </div>
+
+      <div class='col s3'>
+        <%= book.authors %>
+      </div>
+
+      <div class='col s1'>
+        <%= book.price_with_currency %>
+      </div>
+    </div>
+  <% end %>
+</div>

app/views/layouts/application.html.erb

@@ -32,7 +32,7 @@
           <% end %>
           <% if logged_in? %>
             <div class='col s2'>
-              <%= link_to 'Shopping cart', '/authors', method: :get%>
+              <%= link_to 'Shopping cart', '/shopping_cart', method: :get%>
             </div>
           <% end %>
         </div>