Refactor posts controller to use Responder

app/controllers/posts_controller.rb

@@ -1,35 +1,28 @@
 class PostsController < ApplicationController
+  respond_to :html, :xml
+
   # GET /posts
   # GET /posts.xml
   def index
     @posts = Post.all
 
-    respond_to do |format|
-      format.html # index.html.erb
-      format.xml  { render :xml => @posts }
-    end
+    respond_with @posts
   end
 
   # GET /posts/1
   # GET /posts/1.xml
   def show
     @post = Post.find(params[:id])
 
-    respond_to do |format|
-      format.html # show.html.erb
-      format.xml  { render :xml => @post }
-    end
+    respond_with @post    
   end
 
   # GET /posts/new
   # GET /posts/new.xml
   def new
     @post = Post.new
 
-    respond_to do |format|
-      format.html # new.html.erb
-      format.xml  { render :xml => @post }
-    end
+    respond_with @post
   end
 
   # GET /posts/1/edit
@@ -42,31 +35,17 @@ def edit
   def create
     @post = Post.new(params[:post])
 
-    respond_to do |format|
-      if @post.save
-        format.html { redirect_to(@post, :notice => 'Post was successfully created.') }
-        format.xml  { render :xml => @post, :status => :created, :location => @post }
-      else
-        format.html { render :action => "new" }
-        format.xml  { render :xml => @post.errors, :status => :unprocessable_entity }
-      end
-    end
+    flash[:notice] = 'Post was successfully created.' if @post.save
+    respond_with @post
   end
 
   # PUT /posts/1
   # PUT /posts/1.xml
   def update
     @post = Post.find(params[:id])
 
-    respond_to do |format|
-      if @post.update_attributes(params[:post])
-        format.html { redirect_to(@post, :notice => 'Post was successfully updated.') }
-        format.xml  { head :ok }
-      else
-        format.html { render :action => "edit" }
-        format.xml  { render :xml => @post.errors, :status => :unprocessable_entity }
-      end
-    end
+    flash[:notice] = 'Post was successfully updated.' if @post.update_attributes(params[:post])
+    respond_with @post
   end
 
   # DELETE /posts/1
@@ -75,9 +54,6 @@ def destroy
     @post = Post.find(params[:id])
     @post.destroy
 
-    respond_to do |format|
-      format.html { redirect_to(posts_url) }
-      format.xml  { head :ok }
-    end
+    respond_with @post
   end
 end