Prevent mass-assignment when adding a news comment (#10390).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@9129 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/comments_controller.rb

@@ -25,7 +25,8 @@ class CommentsController < ApplicationController
   def create
     raise Unauthorized unless @news.commentable?
 
-    @comment = Comment.new(params[:comment])
+    @comment = Comment.new
+    @comment.safe_attributes = params[:comment]
     @comment.author = User.current
     if @news.comments << @comment
       flash[:notice] = l(:label_comment_added)

app/models/comment.rb

@@ -16,8 +16,11 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 class Comment < ActiveRecord::Base
+  include Redmine::SafeAttributes
   belongs_to :commented, :polymorphic => true, :counter_cache => true
   belongs_to :author, :class_name => 'User', :foreign_key => 'author_id'
 
   validates_presence_of :commented, :author, :comments
+
+  safe_attributes 'comments'
 end