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-192-23/vendor/rails/actionpack/lib/action_controller/assertions/selector_assertions.rb:307:in `assert_select'
  /home/rubys/git/awdwr/edition3/checkdepot.rb:143:in `block in <class:DepotTest>'
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-192-23/depot

Application Trace | Framework Trace | Full Trace 
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb:29:in `block in table_structure'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb:28:in `tap'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb:28:in `table_structure'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/connection_adapters/sqlite_adapter.rb:228:in `columns'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/base.rb:1305:in `columns'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/base.rb:1313:in `columns_hash'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/session_store.rb:93:in `setup_sessid_compatibility!'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/session_store.rb:62:in `find_by_session_id'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/session_store.rb:330:in `find_session'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/session_store.rb:290:in `block in get_session'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/base.rb:1482:in `silence'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/session_store.rb:288:in `get_session'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/session/abstract_store.rb:221:in `block in load_session'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/session/abstract_store.rb:258:in `stale_session_check!'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/session/abstract_store.rb:219:in `load_session'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/session/abstract_store.rb:132:in `load!'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/session/abstract_store.rb:128:in `load_for_write!'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/session/abstract_store.rb:67:in `[]='
/home/rubys/git/awdwr/edition3/work-192-23/depot/app/controllers/store_controller.rb:22:in `empty_cart'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/base.rb:1333:in `perform_action'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/filters.rb:617:in `call_filters'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/filters.rb:610:in `perform_action_with_filters'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/benchmarking.rb:68:in `block in perform_action_with_benchmark'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activesupport/lib/active_support/core_ext/benchmark.rb:17:in `block in ms'
/home/rubys/.rvm/rubies/ruby-1.9.2-p320/lib/ruby/1.9.1/benchmark.rb:310:in `realtime'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activesupport/lib/active_support/core_ext/benchmark.rb:17:in `ms'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/benchmarking.rb:68:in `perform_action_with_benchmark'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/rescue.rb:160:in `perform_action_with_rescue'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/flash.rb:151:in `perform_action_with_flash'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/base.rb:532:in `process'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/filters.rb:606:in `process_with_filters'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/base.rb:391:in `process'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/base.rb:386:in `call'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/routing/route_set.rb:438:in `call'

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-192-23/depot

Application Trace | Framework Trace | Full Trace 
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb:29:in `block in table_structure'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb:28:in `tap'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb:28:in `table_structure'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/connection_adapters/sqlite_adapter.rb:228:in `columns'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/base.rb:1305:in `columns'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/base.rb:1313:in `columns_hash'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/base.rb:1612:in `find_one'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/base.rb:1603:in `find_from_ids'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/base.rb:620:in `find'
/home/rubys/git/awdwr/edition3/work-192-23/depot/app/controllers/store_controller.rb:10:in `add_to_cart'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/base.rb:1333:in `perform_action'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/filters.rb:617:in `call_filters'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/filters.rb:610:in `perform_action_with_filters'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/benchmarking.rb:68:in `block in perform_action_with_benchmark'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activesupport/lib/active_support/core_ext/benchmark.rb:17:in `block in ms'
/home/rubys/.rvm/rubies/ruby-1.9.2-p320/lib/ruby/1.9.1/benchmark.rb:310:in `realtime'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activesupport/lib/active_support/core_ext/benchmark.rb:17:in `ms'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/benchmarking.rb:68:in `perform_action_with_benchmark'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/rescue.rb:160:in `perform_action_with_rescue'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/flash.rb:151:in `perform_action_with_flash'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/base.rb:532:in `process'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/filters.rb:606:in `process_with_filters'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/base.rb:391:in `process'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/base.rb:386:in `call'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/routing/route_set.rb:438:in `call'

Request

Parameters: 

{"id"=>"2"}

Show session dump

Response

Headers: 

{"Cache-Control"=>"no-cache",
 "Content-Type"=>""}
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-192-23/depot

Application Trace | Framework Trace | Full Trace 
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb:29:in `block in table_structure'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb:28:in `tap'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb:28:in `table_structure'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/connection_adapters/sqlite_adapter.rb:228:in `columns'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/base.rb:1305:in `columns'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/base.rb:1313:in `columns_hash'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/base.rb:1612:in `find_one'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/base.rb:1603:in `find_from_ids'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/base.rb:620:in `find'
/home/rubys/git/awdwr/edition3/work-192-23/depot/app/controllers/store_controller.rb:10:in `add_to_cart'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/base.rb:1333:in `perform_action'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/filters.rb:617:in `call_filters'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/filters.rb:610:in `perform_action_with_filters'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/benchmarking.rb:68:in `block in perform_action_with_benchmark'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activesupport/lib/active_support/core_ext/benchmark.rb:17:in `block in ms'
/home/rubys/.rvm/rubies/ruby-1.9.2-p320/lib/ruby/1.9.1/benchmark.rb:310:in `realtime'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activesupport/lib/active_support/core_ext/benchmark.rb:17:in `ms'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/benchmarking.rb:68:in `perform_action_with_benchmark'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/rescue.rb:160:in `perform_action_with_rescue'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/flash.rb:151:in `perform_action_with_flash'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/base.rb:532:in `process'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/filters.rb:606:in `process_with_filters'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/base.rb:391:in `process'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/base.rb:386:in `call'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/routing/route_set.rb:438:in `call'

Request

Parameters: 

{"id"=>"2"}

Show session dump

Response

Headers: 

{"Cache-Control"=>"no-cache",
 "Content-Type"=>""}
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-192-23/depot

Application Trace | Framework Trace | Full Trace 
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb:29:in `block in table_structure'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb:28:in `tap'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb:28:in `table_structure'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/connection_adapters/sqlite_adapter.rb:228:in `columns'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/base.rb:1305:in `columns'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/base.rb:1313:in `columns_hash'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/base.rb:1612:in `find_one'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/base.rb:1603:in `find_from_ids'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activerecord/lib/active_record/base.rb:620:in `find'
/home/rubys/git/awdwr/edition3/work-192-23/depot/app/controllers/store_controller.rb:10:in `add_to_cart'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/base.rb:1333:in `perform_action'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/filters.rb:617:in `call_filters'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/filters.rb:610:in `perform_action_with_filters'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/benchmarking.rb:68:in `block in perform_action_with_benchmark'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activesupport/lib/active_support/core_ext/benchmark.rb:17:in `block in ms'
/home/rubys/.rvm/rubies/ruby-1.9.2-p320/lib/ruby/1.9.1/benchmark.rb:310:in `realtime'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/activesupport/lib/active_support/core_ext/benchmark.rb:17:in `ms'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/benchmarking.rb:68:in `perform_action_with_benchmark'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/rescue.rb:160:in `perform_action_with_rescue'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/flash.rb:151:in `perform_action_with_flash'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/base.rb:532:in `process'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/filters.rb:606:in `process_with_filters'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/base.rb:391:in `process'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/base.rb:386:in `call'
/home/rubys/git/awdwr/edition3/work-192-23/depot/vendor/rails/actionpack/lib/action_controller/routing/route_set.rb:438:in `call'

Request

Parameters: 

{"id"=>"3"}

Show session dump

Response

Headers: 

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

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