gistfile1.rb

#
# Scaffolded, because it's realy straight forward ;-)
#

class BlogpostsController < ApplicationController

	before_filter :authenticate_admin! , :except => [:index, :show]


  # GET /blogposts
  # GET /blogposts.xml
  def index
    @blogposts = Blogpost.all

	@title = "Photo Blog"
	
    respond_to do |format|
      format.html {
      	@blogposts = Blogpost.order(:title).page(params[:page]).per(5)
      } # index.html.erb
      format.xml  { 
      	@blogposts = Blogpost.all
      	render :xml => @blogposts 
      }
      format.atom {
      	@blogposts = Blogpost.all
      }
    end
  end

  # GET /blogposts/1
  # GET /blogposts/1.xml
  def show
    @blogpost = Blogpost.find(params[:id])

    respond_to do |format|
      format.html # show.html.erb
      format.xml  { render :xml => @blogpost }
    end
  end

  # GET /blogposts/new
  # GET /blogposts/new.xml
  def new
    @blogpost = Blogpost.new

    respond_to do |format|
      format.html # new.html.erb
      format.xml  { render :xml => @blogpost }
    end
  end

  # GET /blogposts/1/edit
  def edit
    @blogpost = Blogpost.find(params[:id])
  end

  # POST /blogposts
  # POST /blogposts.xml
  def create
    @blogpost = Blogpost.new(params[:blogpost])

    respond_to do |format|
      if @blogpost.save
        format.html { redirect_to(@blogpost, :notice => 'Blogpost was successfully created.') }
        format.xml  { render :xml => @blogpost, :status => :created, :location => @blogpost }
      else
        format.html { render :action => "new" }
        format.xml  { render :xml => @blogpost.errors, :status => :unprocessable_entity }
      end
    end
  end

  # PUT /blogposts/1
  # PUT /blogposts/1.xml
  def update
    @blogpost = Blogpost.find(params[:id])

    respond_to do |format|
      if @blogpost.update_attributes(params[:blogpost])
        format.html { redirect_to(@blogpost, :notice => 'Blogpost was successfully updated.') }
        format.xml  { head :ok }
      else
        format.html { render :action => "edit" }
        format.xml  { render :xml => @blogpost.errors, :status => :unprocessable_entity }
      end
    end
  end

  # DELETE /blogposts/1
  # DELETE /blogposts/1.xml
  def destroy
    @blogpost = Blogpost.find(params[:id])
    @blogpost.destroy

    respond_to do |format|
      format.html { redirect_to(blogposts_url) }
      format.xml  { head :ok }
    end
  end
end

index.xml.erb

<?xml ...?>
<% @posts.each do |post| -%>
<post>
  <title><%= post.title %></title>
  <content>
    <%= render :partial => '...' %>
  </content>
</post>