implemented forum post controller

app/controllers/artists_controller.rb

@@ -1,16 +1,20 @@
 class ArtistsController < ApplicationController
+  respond_to :html, :xml, :json
   before_filter :member_only, :except => [:index, :show]
   
   def new
     @artist = Artist.new_with_defaults(params)
+    respond_with(@artist)
   end
   
   def edit
     @artist = Artist.find(params[:id])
+    respond_with(@artist)
   end
   
   def index
     @artists = Artist.build_relation(params).paginate(:per_page => 25, :page => params[:page])
+    respond_with(@artists)
   end
   
   def show
@@ -18,38 +22,26 @@ class ArtistsController < ApplicationController
     
     if @artist
       @posts = Danbooru.config.select_posts_visible_to_user(CurrentUser.user, Post.find_by_tags(@artist.name, :limit => 6))
-    else
-      redirect_to new_artist_path(params[:name])
     end
+
+    respond_with(@artist)
   end
   
   def create
     @artist = Artist.create(params[:artist])
-
-    if @artist.errors.empty?
-      redirect_to artist_path(@artist), :notice => "Artist created"
-    else
-      flash[:notice] = "There were errors"
-      render :action => "new"
-    end
+    respond_with(@artist)
   end
   
   def update
     @artist = Artist.find(params[:id])
     @artist.update_attributes(params[:artist])
-    
-    if @artist.errors.empty?
-      redirect_to artist_path(@artist), :notice => "Artist updated"
-    else
-      flash[:notice] = "There were errors"
-      render :action => "edit"
-    end
+    respond_with(@artist)
   end
   
   def revert
     @artist = Artist.find(params[:id])
     @version = ArtistVersion.find(params[:version_id])
     @artist.revert_to!(@version)
-    redirect_to artist_path(@artist), :notice => "Artist updated"
+    respond_with(@artist)
   end
 end