Finishing the Cart
Finish improving the functionality of the cart.
We'll cover the following...
We know by now that to implement the empty-cart function, we have to add a link to the cart and modify the destroy() method in the carts controller to clean up the session.
Start with the template and use the button_to() method in line 12, to add a button:
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<% if notice %><aside id="notice"><%= notice %></aside><% end %><h2>Your Pragmatic Cart</h2><ul><% @cart.line_items.each do |item| %><li><%= item.quantity %> × <%= item.product.title %></li><% end %></ul><%= button_to 'Empty cart', @cart, method: :delete,data: { confirm: 'Are you sure?' } %>
Modifying the controller
In the controller, let’s ...