error while making a feedback form

hii

i am making a feedback form wherein data submittd doesnt get savd in
the database...

code for page controller is like...
class PagesController < ApplicationController
layout "pages"
def feedback
  @feedback_a = feed.new(params[:feed])
  if request.post? and @feedback_a.save
    redirect_to :action => 'home', :id => params[:id]
end
end

i have generated a feed model for this also...