Ruby on Rails development from scratch (Windows) (10)-Empty cart and format amount

In the last section, we added error handling to the shopping cart, this time to format the empty cart and amount.

To this moment we have not added any processing to the "Empty cart" link that displays the Shopping information list page. We first implement this function:

1. Add the Empty_cart method to the Store_control.rb file:

def empty_cart
find_cart.empty!
Flash[:notice] = ' Your cart is now empty '
redirect_to (: Action => ' index ')
end

2. Next is the cart.rb file, adding the following code:

def empty!
@items = []
@total_price = 0.0
End

Well, that's simple, now click on the empty cart link to reposition to the index page and display a message, as shown in figure: