The Depot Application

9.1 Iteration D1: Moving the Cart 8.4 Iteration C3: Handling Errors

8.5 Iteration C4: Finishing the Cart

Expected at least 1 element matching "#notice", found 0.

Traceback:
  /home/rubys/git/awdwr/edition3/work-187-23/vendor/rails/actionpack/lib/action_controller/assertions/selector_assertions.rb:307:in `assert_select'
  /home/rubys/git/awdwr/edition3/checkdepot.rb:143
edit app/views/store/add_to_cart.html.erb
<h2>Your Pragmatic Cart</h2>
<ul>
  <% for item in @cart.items %>
    <li><%= item.quantity %> &times; <%=h item.title %></li>
  <% end %>
</ul>
 
<%= button_to 'Empty cart', :action => 'empty_cart' %>
edit app/controllers/store_controller.rb
  def empty_cart
    session[:cart] = nil
    flash[:notice] = "Your cart is currently empty"
    redirect_to :action => 'index'
  end
get /store/empty_cart

ActiveRecord::StatementInvalid in StoreController#empty_cart 

Could not find table 'sessions'

RAILS_ROOT: /home/rubys/git/awdwr/edition3/work-187-23/depot

Application Trace | Framework Trace | Full Trace

Request

Parameters: 

None

Show session dump

Response

Headers: 

{"Cache-Control"=>"no-cache",
 "Content-Type"=>""}
edit app/controllers/store_controller.rb
  def add_to_cart
    product = Product.find(params[:id])
    @cart = find_cart
    @cart.add_product(product)
  rescue ActiveRecord::RecordNotFound
    logger.error("Attempt to access invalid product #{params[:id]}")
    redirect_to_index("Invalid product")
  end
 
  def empty_cart
    session[:cart] = nil
    redirect_to_index("Your cart is currently empty")
  end
 
private
 
  def redirect_to_index(msg)
    flash[:notice] = msg
    redirect_to :action => 'index'
  end
edit app/views/store/add_to_cart.html.erb
<div class="cart-title">Your Cart</div>
<table>
  <% for item in @cart.items %>
    <tr>
      <td><%= item.quantity %>&times;</td>
      <td><%=h item.title %></td>
      <td class="item-price"><%= number_to_currency(item.price) %></td>
    </tr>
  <% end %>  
  
  <tr class="total-line">
    <td colspan="2">Total</td>
    <td class="total-cell"><%= number_to_currency(@cart.total_price) %></td>
  </tr>
 
</table>
  
<%= button_to "Empty cart", :action => :empty_cart %>
edit public/stylesheets/depot.css
/* Styles for the cart in the main page */
 
.cart-title {
  font: 120% bold;
}
 
.item-price, .total-line {
  text-align: right;
}
 
.total-line .total-cell {
  font-weight: bold;
  border-top: 1px solid #595;
}
edit app/models/cart.rb
class Cart
  attr_reader :items   # <wtf linkend="wtf.attr.accessor">attr_reader</wtf>
  
  def initialize
    @items = []
  end
  
  def add_product(product)
    current_item = @items.find {|item| item.product == product}
    if current_item
      current_item.increment_quantity
    else
      @items << CartItem.new(product)
    end
  end
 
  def total_price
    @items.sum { |item| item.price }
  end
end

Restart the server.

get /store/add_to_cart/2

ActiveRecord::StatementInvalid in StoreController#add_to_cart 

Could not find table 'products'

RAILS_ROOT: /home/rubys/git/awdwr/edition3/work-187-23/depot

Application Trace | Framework Trace | Full Trace

Request

Parameters: 

{"id"=>"2"}

Show session dump

Response

Headers: 

{"Content-Type"=>"",
 "Cache-Control"=>"no-cache"}
get /store/add_to_cart/2

ActiveRecord::StatementInvalid in StoreController#add_to_cart 

Could not find table 'products'

RAILS_ROOT: /home/rubys/git/awdwr/edition3/work-187-23/depot

Application Trace | Framework Trace | Full Trace

Request

Parameters: 

{"id"=>"2"}

Show session dump

Response

Headers: 

{"Content-Type"=>"",
 "Cache-Control"=>"no-cache"}
get /store/add_to_cart/3

ActiveRecord::StatementInvalid in StoreController#add_to_cart 

Could not find table 'products'

RAILS_ROOT: /home/rubys/git/awdwr/edition3/work-187-23/depot

Application Trace | Framework Trace | Full Trace

Request

Parameters: 

{"id"=>"3"}

Show session dump

Response

Headers: 

{"Content-Type"=>"",
 "Cache-Control"=>"no-cache"}

9.1 Iteration D1: Moving the Cart 8.4 Iteration C3: Handling Errors