Merge pull request #153 from openHPI/migrate-in-batches

Migration fixes

db/migrate/20180130172021_add_reached_full_score_to_request_for_comment.rb

@@ -1,8 +1,8 @@
 class AddReachedFullScoreToRequestForComment < ActiveRecord::Migration
   def up
     add_column :request_for_comments, :full_score_reached, :boolean, default: false
-    RequestForComment.all.each { |rfc|
-      if (rfc.submission.present? && rfc.submission.exercise.has_user_solved(rfc.user))
+    RequestForComment.find_each { |rfc|
+      if rfc.submission.present? and rfc.submission.exercise.has_user_solved(rfc.user)
         rfc.full_score_reached = true
         rfc.save
       end

db/migrate/20180222145909_fix_timestamps_on_feedback.rb

@@ -1,6 +1,10 @@
 class FixTimestampsOnFeedback < ActiveRecord::Migration
-  def change
+  def up
     change_column_default(:user_exercise_feedbacks, :created_at, nil)
     change_column_default(:user_exercise_feedbacks, :updated_at, nil)
   end
+
+  def down
+    
+  end
 end