Agile Web Development with Rails, Edition 4
11.6 Iteration F6: Testing AJAX changes
11.4 Iteration F4: Hide an Empty Cart
11.5 Iteration F5: Making Images Clickable
Review our current storefront markup
edit app/views/store/index.html.erb
<% if notice %>
<p id="notice"><%= notice %></p>
<% end %>
<h1>Your Pragmatic Catalog</h1>
<% cache ['store', Product.latest] do %>
<% @products.each do |product| %>
<% cache ['entry', product] do %>
<div class="entry">
<%= image_tag(product.image_url) %>
<h3><%= product.title %></h3>
<%= sanitize(product.description) %>
<div class="price_line">
<span class="price"><%= number_to_currency(product.price) %></span>
<%= button_to 'Add to Cart', line_items_path(product_id: product),
remote: true %>
</div>
</div>
<% end %>
<% end %>
<% end %>
Associate image clicks with submit button clicks
edit app/assets/javascripts/store.js.coffee
$(document).on "ready page:change", ->
$('.store .entry > img').click ->
$(this).parent().find(':submit').click()
The page looks no different
get /
Pragmatic Bookshelf
Your Cart
1×
CoffeeScript
$36.00
Total
$36.00
Your Pragmatic Catalog
CoffeeScript
CoffeeScript is JavaScript done right. It provides all of JavaScript's
functionality wrapped in a cleaner, more succinct syntax. In the first
book on this exciting new language, CoffeeScript guru Trevor Burnham
shows you how to hold onto all the power and flexibility of JavaScript
while writing clearer, cleaner, and safer code.
Programming Ruby 1.9 & 2.0
Ruby is the fastest growing and most exciting dynamic language
out there. If you need to get working programs delivered fast,
you should add Ruby to your toolbox.
Rails Test Prescriptions
Rails Test Prescriptions is a comprehensive guide to testing
Rails applications, covering Test-Driven Development from both a
theoretical perspective (why to test) and from a practical perspective
(how to test effectively). It covers the core Rails testing tools and
procedures for Rails 2 and Rails 3, and introduces popular add-ons,
including Cucumber, Shoulda, Machinist, Mocha, and Rcov.
Run tests... oops.
rake test
Run options: --seed 49567
# Running:
......F.EEEE......E......EEEE.
Finished in 0.475059s, 63.1501 runs/s, 132.6152 assertions/s.
1) Failure:
LineItemsControllerTest#test_should_create_line_item [/home/rubys/git/awdwr/edition4/work-41/depot/test/controllers/line_items_controller_test.rb:28]:
Expected response to be a redirect to <http://test.host/carts/980190963> but was a redirect to <http://test.host/>.
Expected "http://test.host/carts/980190963" to be === "http://test.host/".
2) Error:
LineItemsControllerTest#test_should_get_edit:
ActionView::Template::Error: undefined method `line_items' for nil:NilClass
app/views/layouts/application.html.erb:21:in `_app_views_layouts_application_html_erb___1442433321036920057_40142240'
test/controllers/line_items_controller_test.rb:39:in `block in <class:LineItemsControllerTest>'
3) Error:
LineItemsControllerTest#test_should_get_index:
ActionView::Template::Error: undefined method `line_items' for nil:NilClass
app/views/layouts/application.html.erb:21:in `_app_views_layouts_application_html_erb___1442433321036920057_40142240'
test/controllers/line_items_controller_test.rb:9:in `block in <class:LineItemsControllerTest>'
4) Error:
LineItemsControllerTest#test_should_get_new:
ActionView::Template::Error: undefined method `line_items' for nil:NilClass
app/views/layouts/application.html.erb:21:in `_app_views_layouts_application_html_erb___1442433321036920057_40142240'
test/controllers/line_items_controller_test.rb:15:in `block in <class:LineItemsControllerTest>'
5) Error:
LineItemsControllerTest#test_should_show_line_item:
ActionView::Template::Error: undefined method `line_items' for nil:NilClass
app/views/layouts/application.html.erb:21:in `_app_views_layouts_application_html_erb___1442433321036920057_40142240'
test/controllers/line_items_controller_test.rb:34:in `block in <class:LineItemsControllerTest>'
6) Error:
CartsControllerTest#test_should_get_index:
ActionView::Template::Error: undefined method `line_items' for nil:NilClass
app/views/layouts/application.html.erb:21:in `_app_views_layouts_application_html_erb___1442433321036920057_40142240'
test/controllers/carts_controller_test.rb:9:in `block in <class:CartsControllerTest>'
7) Error:
ProductsControllerTest#test_should_get_edit:
ActionView::Template::Error: undefined method `line_items' for nil:NilClass
app/views/layouts/application.html.erb:21:in `_app_views_layouts_application_html_erb___1442433321036920057_40142240'
test/controllers/products_controller_test.rb:44:in `block in <class:ProductsControllerTest>'
8) Error:
ProductsControllerTest#test_should_get_index:
ActionView::Template::Error: undefined method `line_items' for nil:NilClass
app/views/layouts/application.html.erb:21:in `_app_views_layouts_application_html_erb___1442433321036920057_40142240'
test/controllers/products_controller_test.rb:18:in `block in <class:ProductsControllerTest>'
9) Error:
ProductsControllerTest#test_should_get_new:
ActionView::Template::Error: undefined method `line_items' for nil:NilClass
app/views/layouts/application.html.erb:21:in `_app_views_layouts_application_html_erb___1442433321036920057_40142240'
test/controllers/products_controller_test.rb:24:in `block in <class:ProductsControllerTest>'
10) Error:
ProductsControllerTest#test_should_show_product:
ActionView::Template::Error: undefined method `line_items' for nil:NilClass
app/views/layouts/application.html.erb:21:in `_app_views_layouts_application_html_erb___1442433321036920057_40142240'
test/controllers/products_controller_test.rb:39:in `block in <class:ProductsControllerTest>'
30 runs, 63 assertions, 1 failures, 9 errors, 0 skips
11.6 Iteration F6: Testing AJAX changes
11.4 Iteration F4: Hide an Empty Cart