Rails 4 routing and attr_accessible changes

* Routing
** Rails 4 moved the root example from bottom to top of routes file
** the static index.html page is now a dynamic file at welcome#index and not a static file in public

* attr_accessible
** Rails 4 has moved Mass Assignment responsibilities to an external gem
** In order to mass assign object attributes through a model you have to add the strong_paramters gem

Author: Jed Schneider

sites/curriculum/hooking_up_votes_and_topics.step

@@ -17,6 +17,19 @@ goals {
 }
 
 steps {
+  step 'Edit the Gemfile' do
+   message "In order to save votes through the Topic model we must allow Rails to whitelist specific attributes for each model."
+   message "In Rails 4, this functionality is provided in a separate gem. We need to install that gem in order to save the votes."
+   message "Open the `Gemfile` in your text editor. Under the declaration for the `rails` gem add the following line of code:"
+
+    source_code :ruby, <<-RUBY
+gem 'strong_parameters'
+    RUBY
+  end
+
+  step "Apply the Gemfile changes" do
+    console "bundle install"
+  end
 
   step {
     message "Edit `app/models/topic.rb` so that it looks like this:"

sites/curriculum/setting_the_default_page.step

@@ -13,20 +13,12 @@ goals {
 steps {
 
   step "Add a root route" do
-    message "Open `config/routes.rb`. Near the end of the file but before the final end add `root :to => 'topics#index'`. When you are done the last few lines should look like this:"
+    message "Open `config/routes.rb`. Search the file for 'root' (near the top) uncomment that line and change it to read  `root 'topics#index'`. When you are done the line should look like this:"
+  end
 
     source_code :ruby, <<-RUBY
-root :to => 'topics#index'
+root 'topics#index'
     RUBY
-  end
-
-  step "Remove the static welcome file" do
-
-    message "  You also need to remove the welcome aboard page for the new route to work."
-
-    console "git rm public/index.html"
-
-  end
 
   step "Confirm your changes" do
     message "Go back to <http://localhost:3000/>. You should be taken to the topics list automatically."
@@ -36,7 +28,7 @@ root :to => 'topics#index'
 explanation {
 
  message <<-MARKDOWN
-  * `root :to => 'topics#index'` is a rails route that says the default
+  * `root 'topics#index'` is a rails route that says the default
     address for your site is `topics#index`. `topics#index` is the topics
     list page (the topics controller with the index action).
   * Rails routes control how URLs (web addresses) get matched with