_deal_state.html.erb

	<%= form_tag("deal_status", :remote=>true, :id=>"deal_" + @deal.id.to_s, :class => "deals_status") do %>

	<%= hidden_field_tag 'deal_id', @deal.id.to_s %>

	<%= radio_button_tag( :state, "won", @deal.state == 'won' ) %>
	<%= label_tag( :state_won, "Won" ) %>

	<%= radio_button_tag( :state, "lost", @deal.state == 'lost' ) %>	
	<%= label_tag( :state_lost, "Lost" ) %>

	<%= radio_button_tag( :state, "pending", @deal.state == 'pending' ) %>
	<%= label_tag( :state_pending, "Pending" ) %>

	<% end %>
	

companies.js

	$(".deals_status :radio").on('change', function(){
		$(this).closest("form").submit();
		alert("alert!!!!!");
	});

companies_controller.rb

  def deal_status

    deal_id = params[:deal_id]
    d = Deal.find_by_id(deal_id)
    d.state = params[:state]
    d.save

    @deal_id = deal_id
    @deal = d

      respond_to do |format|
      format.js 

    end
  end

deal_status.js.erb

$('#deal_<%= @deal_id %>').html("<%= escape_javascript(render 'deal_state') %>");