FIX es bug

app/models/attachment.rb

@@ -17,7 +17,6 @@
 
 require "digest/md5"
 require "fileutils"
-require 'elasticsearch/model'
 class Attachment < ActiveRecord::Base
   belongs_to :container, :polymorphic => true
   belongs_to :project, foreign_key: 'container_id', conditions: "attachments.container_type = 'Project'"

app/models/concerns/searchable.rb

@@ -1,3 +1,4 @@
+require 'elasticsearch/model'
 module Searchable
   extend ActiveSupport::Concern
 

app/models/course.rb

@@ -1,6 +1,5 @@
 #coding=utf-8
 
-require 'elasticsearch/model'
 class Course < ActiveRecord::Base
   include Redmine::SafeAttributes
 

app/models/memo.rb

@@ -1,4 +1,3 @@
-require 'elasticsearch/model'
 class Memo < ActiveRecord::Base
 	include Redmine::SafeAttributes
   include UserScoreHelper

app/models/project.rb

@@ -14,7 +14,6 @@
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
-require 'elasticsearch/model'
 class Project < ActiveRecord::Base
   include Redmine::SafeAttributes
   ProjectType_project = 0

app/models/user.rb

@@ -16,7 +16,6 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 require "digest/sha1"
-require 'elasticsearch/model'
 class User < Principal
   TEACHER = 0
   STUDENT = 1