it can be summited project with same name.

app/controllers/bids_controller.rb

@@ -454,7 +454,7 @@ class BidsController < ApplicationController
 
   ###添加应标项目
   def add
-    project = Project.where('name = ?', params[:bid]).first
+    project = Project.find(params[:bid])
     bid_message = params[:bid_for_save][:bid_message]
     if BidingProject.where("project_id = ? and bid_id = ?", project.id, @bid.id).size == 0
       if BidingProject.cerate_bidding(@bid.id, project.id, bid_message)

app/helpers/bids_helper.rb

@@ -135,4 +135,12 @@ module BidsHelper
     people.include?(User.current)
   end
 
+  def select_option_helper option
+    tmp = Hash.new
+    option.each do |project|
+      tmp[project.name] = project.identifier
+    end
+    tmp
+  end
+
 end

app/views/bids/show_project.html.erb

@@ -70,7 +70,7 @@
 		:complete => '$("#put-bid-form").hide();' do |f| %>
 		<table id="bidding_table" border="0" width="100%" style="margin-left: 40px;">
 			<tr>
-				<td><%= select_tag 'bid', options_for_select(@option), :name => 'bid', :class => 'grayline' %></td>
+				<td><%= select_tag 'bid', options_for_select(select_option_helper(@option)), :name => 'bid', :class => 'grayline' %></td>
 		<div id="prompt_create_pro"><!-- nyan -->
 			<td>
 				<p>