modify destroy project and user can't destroy biding_project

app/models/project.rb

@@ -51,6 +51,9 @@ class Project < ActiveRecord::Base
   has_one :repository, :conditions => ["is_default = ?", true]
   has_many :repositories, :dependent => :destroy
   has_many :changesets, :through => :repository
+  #added by xianbo for delete biding_project
+  has_many :biding_projects, :dependent => :destroy
+  #ended by xianbo
   # added by fq
   has_many :journals_for_messages, :as => :jour, :dependent => :destroy
   has_many :homework_for_courses, :dependent => :destroy

app/models/user.rb

@@ -75,7 +75,9 @@ class User < Principal
   has_one :rss_token, :class_name => 'Token', :conditions => "action='feeds'"
   has_one :api_token, :class_name => 'Token', :conditions => "action='api'"
   belongs_to :auth_source
-
+## added by xianbo for delete 
+  has_many :biding_projects, :dependent => :destroy
+##ended by xianbo
   
 #####fq
   has_many :jours, :class_name => 'JournalsForMessage', :dependent => :destroy