......

  # POST /twits
  # POST /twits.xml
  def create
    @twit = Twit.new(params[:twit])

    respond_to do |format|
      if @twit.save
        flash[:notice] = 'Twit was successfully created.'
        #format.html { redirect_to(@twit) }
        #format.xml  { render :xml => @twit, :status => :created, :location => @twit }
        format.html { redirect_to(twits_url) }
        format.xml  { head :ok }
      else
        format.html { render :action => "new" }
        format.xml  { render :xml => @twit.errors, :status => :unprocessable_entity }
      end
    end
  end

......