1 files changed, 50 insertions, 0 deletions
diff --git a/db/post_migrate/20170518200835_rename_users_with_renamed_namespace.rb b/db/post_migrate/20170518200835_rename_users_with_renamed_namespace.rb
new file mode 100644
index 00000000000..da0fcda87a6
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+++ b/db/post_migrate/20170518200835_rename_users_with_renamed_namespace.rb
@@ -0,0 +1,50 @@
+# See http://doc.gitlab.com/ce/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+class RenameUsersWithRenamedNamespace < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  DISALLOWED_ROOT_PATHS = %w[
+    abuse_reports
+    api
+    autocomplete
+    explore
+    health_check
+    import
+    invites
+    jwt
+    koding
+    member
+    notification_settings
+    oauth
+    sent_notifications
+    unicorn_test
+    uploads
+    users
+  ]
+
+  def up
+    DISALLOWED_ROOT_PATHS.each do |path|
+      users = Arel::Table.new(:users)
+      namespaces = Arel::Table.new(:namespaces)
+      predicate = namespaces[:owner_id].eq(users[:id])
+                    .and(namespaces[:type].eq(nil))
+                    .and(users[:username].matches(path))
+      update_sql = if Gitlab::Database.postgresql?
+                     "UPDATE users SET username = namespaces.path "\
+                     "FROM namespaces WHERE #{predicate.to_sql}"
+                   else
+                     "UPDATE users INNER JOIN namespaces "\
+                     "ON namespaces.owner_id = users.id "\
+                     "SET username = namespaces.path "\
+                     "WHERE #{predicate.to_sql}"
+                   end
+
+      connection.execute(update_sql)
+    end
+  end
+
+  def down
+  end
+end