Implemented decent exposure gem for nested resource Widget.

.gitignore

@@ -2,3 +2,4 @@
 db/*.sqlite3
 log/*.log
 tmp/
+.rvmrc

Gemfile

@@ -6,8 +6,8 @@ gem 'rails', '3.0.9'
 # gem 'rails', :git => 'git://github.com/rails/rails.git'
 
 gem 'sqlite3'
-#gem 'memcache-client'
 gem 'dalli'
+gem 'decent_exposure'
 
 # Use unicorn as the web server
 # gem 'unicorn'

Gemfile.lock

@@ -33,6 +33,7 @@ GEM
     builder (2.1.2)
     columnize (0.3.3)
     dalli (1.0.5)
+    decent_exposure (1.0.1)
     erubis (2.6.6)
       abstract (>= 1.0.0)
     i18n (0.5.0)
@@ -86,6 +87,7 @@ PLATFORMS
 
 DEPENDENCIES
   dalli
+  decent_exposure
   rails (= 3.0.9)
   ruby-debug-base19x
   ruby-debug-ide (= 0.4.17.beta.5)

app/controllers/widgets_controller.rb

@@ -1,93 +1,50 @@
 class WidgetsController < ApplicationController
+
+  expose(:user) { User.find(params[:user_id]) }
+  expose(:widgets) { user.widgets }
+  expose(:widget)
 
-  before_filter :grab_user_from_user_id
   cache_sweeper :user_sweeper, :only => [ :create, :update, :delete ]
 
-  # GET /widgets
-  # GET /widgets.xml
-  def index
-    @widgets = @user.widgets.all
-
-    respond_to do |format|
-      format.html # index.html.erb
-      format.xml  { render :xml => @widgets }
-    end
+  # GET /widgets 
+  def index   
   end
 
-  # GET /widgets/1
-  # GET /widgets/1.xml
-  def show
-    @widget = @user.widgets.find(params[:id])
-
-    respond_to do |format|
-      format.html # show.html.erb
-      format.xml  { render :xml => @widget }
-    end
+  # GET /widgets/1  
+  def show   
   end
 
-  # GET /widgets/new
-  # GET /widgets/new.xml
-  def new
-    @widget = @user.widgets.new
-
-    respond_to do |format|
-      format.html # new.html.erb
-      format.xml  { render :xml => @widget }
-    end
+  # GET /widgets/new 
+  def new    
   end
 
   # GET /widgets/1/edit
-  def edit
-    @widget = @user.widgets.find(params[:id])
+  def edit    
   end
 
-  # POST /widgets
-  # POST /widgets.xml
-  def create
-    @widget = @user.widgets.new(params[:widget])
-
-    respond_to do |format|
-      if @widget.save
-        format.html { redirect_to([@user, @widget], :notice => 'Widget was successfully created.') }
-        format.xml  { render :xml => @widget, :status => :created, :location => @widget }
-      else
-        format.html { render :action => "new" }
-        format.xml  { render :xml => @widget.errors, :status => :unprocessable_entity }
-      end
-    end
+  # POST /widgets  
+  def create   
+    if widget.save
+      redirect_to([user, widget], :notice => 'Widget was successfully created.')      
+    else
+      render :action => "new"        
+    end    
   end
 
-  # PUT /widgets/1
-  # PUT /widgets/1.xml
-  def update
-    @widget = @user.widgets.find(params[:id])
-
-    respond_to do |format|
-      if @widget.update_attributes(params[:widget])
-        format.html { redirect_to([@user, @widget], :notice => 'Widget was successfully updated.') }
-        format.xml  { head :ok }
-      else
-        format.html { render :action => "edit" }
-        format.xml  { render :xml => @widget.errors, :status => :unprocessable_entity }
-      end
-    end
+  # PUT /widgets/1  
+  def update   
+    if widget.update_attributes(params[:widget])
+      redirect_to([user, widget], :notice => 'Widget was successfully updated.')     
+    else
+      render :action => "edit"     
+    end    
   end
 
-  # DELETE /widgets/1
-  # DELETE /widgets/1.xml
+  # DELETE /widgets/1  
   def destroy
-    Widget.find(params[:id]).destroy
-
-    respond_to do |format|
-      format.html { redirect_to(user_widgets_url(@user)) }
-      format.xml  { head :ok }
-    end
-  end
-
-  private
-
-  def grab_user_from_user_id
-    @user = User.find(params[:user_id])
+    widget.destroy
+    redirect_to(user_widgets_url(@user))      
   end
+
 end
 

app/views/widgets/_form.html.erb

@@ -1,10 +1,10 @@
-<%= form_for([@user, @widget]) do |f| %>
-  <% if @widget.errors.any? %>
+<%= form_for([user, widget]) do |f| %>
+  <% if widget.errors.any? %>
     <div id="error_explanation">
       <h2><%= pluralize(@widget.errors.count, "error") %> prohibited this widget from being saved:</h2>
 
       <ul>
-      <% @widget.errors.full_messages.each do |msg| %>
+      <% widget.errors.full_messages.each do |msg| %>
         <li><%= msg %></li>
       <% end %>
       </ul>

app/views/widgets/edit.html.erb

@@ -2,6 +2,6 @@
 
 <%= render 'form' %>
 
-<%= link_to 'Show', [@user, @widget] %> |
-<%= link_to 'Back', user_widgets_path(@user) %>
+<%= link_to 'Show', [user, widget] %> |
+<%= link_to 'Back', user_widgets_path(user) %>
 

app/views/widgets/index.html.erb

@@ -1,4 +1,4 @@
-<h1>Listing <%= @user.name %> widgets</h1>
+<h1>Listing <%= user.name %> widgets</h1>
 
 <table>
   <tr>
@@ -9,19 +9,19 @@
     <th></th>
   </tr>
 
-<% @widgets.each do |widget| %>
+<% widgets.each do |w| %>
   <tr>
-    <td><%= widget.title %></td>
-    <td><%= widget.description %></td>
-    <td><%= link_to 'Show', user_widget_path(@user,widget) %></td>
-    <td><%= link_to 'Edit', edit_user_widget_path(@user, widget) %></td>
-    <td><%= link_to 'Destroy', user_widget_path(@user, widget), :confirm => 'Are you sure?', :method => :delete %></td>
+    <td><%= w.title %></td>
+    <td><%= w.description %></td>
+    <td><%= link_to 'Show', user_widget_path(user,w) %></td>
+    <td><%= link_to 'Edit', edit_user_widget_path(user, w) %></td>
+    <td><%= link_to 'Destroy', user_widget_path(user, w), :confirm => 'Are you sure?', :method => :delete %></td>
   </tr>
 <% end %>
 </table>
 
 <br />
 
-<%= link_to 'New Widget', new_user_widget_path(@user) %>
+<%= link_to 'New Widget', new_user_widget_path(user) %>
 <%= link_to 'Back', users_path %>
 

app/views/widgets/new.html.erb

@@ -2,5 +2,5 @@
 
 <%= render 'form' %>
 
-<%= link_to 'Back', user_widgets_path(@user) %>
+<%= link_to 'Back', user_widgets_path(user) %>
 

app/views/widgets/show.html.erb

@@ -2,15 +2,15 @@
 
 <p>
   <b>Title:</b>
-  <%= @widget.title %>
+  <%= widget.title %>
 </p>
 
 <p>
   <b>Description:</b>
-  <%= @widget.description %>
+  <%= widget.description %>
 </p>
 
 
-<%= link_to 'Edit', edit_user_widget_path(@widget) %> |
-<%= link_to 'Back', user_widgets_path(@user) %>
+<%= link_to 'Edit', edit_user_widget_path(user,widget) %> |
+<%= link_to 'Back', user_widgets_path(user) %>