解决数据同步问题（历史邮件通知validate问题）

lib/tasks/gitlab.rake

@@ -7,7 +7,7 @@ namespace :gitlab do
       # User.where(username: 'root').find_each do |user|
       s = Trustie::Gitlab::Sync.new
       User.find_each do |user|
-        s.sync_user(user) 
+        s.sync_user(user)
       end
     end
 

lib/trustie/gitlab/sync.rb

@@ -22,7 +22,10 @@ module Trustie
 
         def sync_user(user)
             u = add_user(user)
-            user.save! if u
+            if user.mail_notification.blank? or user.mail_notification == "only_assigned" or user.mail_notification == "only_my_events"
+              user.mail_notification = "day"
+            end
+            user.save!
         end
 
         def sync_project(project, opt={})