敏捷Web开发创建更智能的购物车错误

Question

Ruby on Rails的新手，如果有人可以帮我指出正确的方向，我将不胜感激。谢谢

Finished tests in 0.627036s, 38.2753 tests/s, 74.9558 assertions/s.



  1) Error:
CartsControllerTest#test_should_destroy_cart:
ActionView::MissingTemplate: Missing template carts/destroy, application/destroy
 with {:locale=>[:en], :formats=>[:html], :handlers=>[:erb, :builder, :raw, :ruby, :jbuilder, :coffee]}. Searched in:
  * "c:/Users/Daniel Huang/My Documents/projects/trying-again/depot/app/views"

    app/controllers/carts_controller.rb:85:in `set_cart'
    test/controllers/carts_controller_test.rb:45:in `block (2 levels) in <class:
    CartsControllerTest>'
    test/controllers/carts_controller_test.rb:43:in `block in <class:CartsControllerTest>'

  2) Error:
    CartsControllerTest#test_should_update_cart:
    ActionView::MissingTemplate: Missing template carts/update, application/update w
    ith {:locale=>[:en], :formats=>[:html], :handlers=>[:erb, :builder, :raw, :ruby,
    :jbuilder, :coffee]}. Searched in:
     * "c:/Users/Daniel Huang/My Documents/projects/trying-again/depot/app/views"

    app/controllers/carts_controller.rb:85:in `set_cart'
    test/controllers/carts_controller_test.rb:38:in `block in <class:CartsControllerTest>'

  3) Error:
    LineItemsControllerTest#test_should_create_line_item:
    AbstractController::ActionNotFound: The action 'create' could not be found for L
    ineItemsController
    test/controllers/line_items_controller_test.rb:21:in `block (2 levels) in       <class:LineItemsControllerTest>'
     test/controllers/line_items_controller_test.rb:20:in `block in <class:LineIt
     emsControllerTest>'

  4) Error:
    LineItemsControllerTest#test_should_destroy_line_item:
    AbstractController::ActionNotFound: The action 'destroy' could not be found for
    LineItemsController
    test/controllers/line_items_controller_test.rb:44:in `block (2 levels) in              class:LineItemsControllerTest>'
      test/controllers/line_items_controller_test.rb:43:in `block in     <class:LineItemsControllerTest>'

  5) Error:
      LineItemsControllerTest#test_should_get_new:
      ActionView::Template::Error: First argument in form cannot contain nil or be empty
      app/views/line_items/_form.html.erb:1:in_app_views_line_items__form_html_erb___607916578_29103084'
    app/views/line_items/new.html.erb:3:in `_app_views_line_items_new_html_erb__
     _811078298_42530004'
    test/controllers/line_items_controller_test.rb:15:in `block in <class:LineIt
     emsControllerTest>'

  6) Error:
     LineItemsControllerTest#test_should_update_line_item:
     ActionController::ParameterMissing: param not found: line_item
    app/controllers/line_items_controller.rb:89:in `line_item_params'
    app/controllers/line_items_controller.rb:59:in `block in update'
    app/controllers/line_items_controller.rb:58:in `update'
    test/controllers/line_items_controller_test.rb:38:in `block   in<class:LineItemsControllerTest>'

24 tests, 47 assertions, 0 failures, 6 errors, 0 skips

     c:\Users\Daniel Huang\My Documents\projects\trying-again\depot>