删除项目，竞赛表project_id会置空，projecting_softapplications模型不知道干嘛用，此表也不存在

app/controllers/softapplications_controller.rb

@@ -19,20 +19,20 @@ class SoftapplicationsController < ApplicationController
 
     #new added sort
     if params[:softapplication_sort_type].present?
-    case params[:softapplication_sort_type]
+      case params[:softapplication_sort_type]
       when '0'
-          @softapplications = @softapplications[@offset, @limit]
+        @softapplications = @softapplications[@offset, @limit]
         @s_state = 0
       when '1'
-          @softapplications = @softapplications.sort { |x, y| y[:created_at] <=> x[:created_at]}[@offset, @limit]
+        @softapplications = @softapplications.sort { |x, y| y[:created_at] <=> x[:created_at]}[@offset, @limit]
         @s_state = 1
       end
-      else
-          @softapplications = @softapplications.sort { |x, y| y[:created_at] <=> x[:created_at]}[@offset, @limit]
-        @s_state = 1
+    else
+      @softapplications = @softapplications.sort { |x, y| y[:created_at] <=> x[:created_at]}[@offset, @limit]
+      @s_state = 1
     end    
     #new added end
-    
+
     respond_to do |format|
       format.html # index.html.erb
       format.json { render json: @softapplications }
@@ -216,19 +216,19 @@ class SoftapplicationsController < ApplicationController
   def new_message
     @jour = JournalsForMessage.find(params[:journal_id]) if params[:journal_id]
     if @jour
-    user = @jour.user
-    text = @jour.notes
+      user = @jour.user
+      text = @jour.notes
     else
-    user = @softapplication.user
-    text = @softapplication.description
+      user = @softapplication.user
+      text = @softapplication.description
     end
     text = text.to_s.strip.gsub(%r{<pre>((.|\s)*?)</pre>}m, '[...]')
     @content = "> #{ll(User.current.language, :text_user_wrote, user)}\n> "
     @content << text.gsub(/(\r?\n|\r\n?)/, "\n> ") + "\n\n"
     @id = user.id
-    rescue ActiveRecord::RecordNotFound
+  rescue ActiveRecord::RecordNotFound
     render_404
-    end
+  end
 
   #新建评价
   def create_message

app/models/softapplication.rb

@@ -10,7 +10,6 @@ class Softapplication < ActiveRecord::Base
   belongs_to :user
   belongs_to :project
   has_many :contests, :through => :contesting_softapplications
-  belongs_to :project
 
   def add_jour(user, notes, reference_user_id = 0, options = {})
     if options.count == 0