How to create a poll System

_option

<div class="radio_btn_container">
  <input type="radio" name="poll_option" value=<%= option.id %>>
  <%= option.option %>
  </input>
</div>

_poll.html.erb

        <%= render :partial => 'polls/poll_response', :locals =>{:poll => poll} %>

      <div id="poll_errors"></div>
      <div class="poll_option" id="poll_option_<%= poll.id %>">
        <%= form_for(:poll, :remote => true, :url =>  poll_votes_path, :method =>:post,:loading =>"$('poll_option_#{poll.id}').hide(); $('spinner_#{poll.id}').show();",:complete =>"$('spinner_#{poll.id}').hide();$('poll_option_#{poll.id}').show();") do |f| %>
          <%= render :partial => 'polls/option', :collection => poll.poll_options %>
          <button class="buttons" type="submit">
            <%= image_tag("vote.png") %>
          </button>
        <% end %>
      </div>
      <div  id="spinner_<%= poll.id%>" style="display: none;"><%= image_tag('spinner.gif') %></div>



  <span class="widget_lrg_btm"></span>

poll.rb #model

 has_many :poll_options, :dependent => :destroy
  validates_presence_of :question
  validates_presence_of :user
  has_many :poll_responses, :dependent => :destroy
  belongs_to :user


  accepts_nested_attributes_for :poll_options, :poll_responses
  scope :public , :conditions => ["public = ?", true]
  scope :open_polls , :conditions => ["status = ?", true]

poll_option.rb

class PollOption < ActiveRecord::Base
  belongs_to :poll
   validates_uniqueness_of :option, :scope => :poll_id, :message => 'has already.'
  validates_length_of :option, :maximum => 70
  has_many :poll_responses, :dependent => :destroy


  def votes_percentage(precision = 1)
    total_votes = poll.poll_responses.count
    percentage = total_votes.eql?(0) ? 0 : ((poll_responses.count.to_f/total_votes.to_f)*100)
    "%01.#{precision}f" % percentage
  end
end

poll_responces.rb

class PollResponse < ActiveRecord::Base
  belongs_to :poll
  belongs_to :user
  belongs_to :poll_option

validates_presence_of :user
  validates_presence_of :poll_option
  validates_presence_of :poll_id
  validates_uniqueness_of :user_id, :scope => :poll_id, :message => 'has already voted.'

 after_save :update_poll_votes_count

  def update_poll_votes_count
   self.poll.update_attribute 'votes_count', self.poll.votes_count + 1
  end


end

routes

  resources :poll_votes

  resources :polls

show.html.erb

<% title "Poll" %>

<p>
  <strong>Title:</strong>
  <%= @poll.question %>
</p>

<p>
  <strong>Votes Count:</strong>
  <%= @poll.votes_count %>
</p>


<%= render :partial => 'poll', :locals =>{:poll => @poll} %>




<p>
  <%= link_to "Edit", edit_poll_path(@poll) %> |
  <%= link_to "Destroy", @poll, :confirm => 'Are you sure?', :method => :delete %> |
  <%= link_to "View All", polls_path %>
</p>