Add limit of 128 characters to users name57493-add-limit-to-user-name

Truncate existing users names which exceed 128 characters
Include test for truncating users names

1 files changed, 21 insertions, 0 deletions

diff --git a/db/migrate/20190325080727_truncate_user_fullname.rb b/db/migrate/20190325080727_truncate_user_fullname.rb
new file mode 100644
index 00000000000..e5f88671eef
--- /dev/null
+++ b/db/migrate/20190325080727_truncate_user_fullname.rb
@@ -0,0 +1,21 @@
+# rubocop:disable Migration/UpdateLargeTable
+class TruncateUserFullname < ActiveRecord::Migration[5.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    truncated_name = Arel.sql('SUBSTRING(name from 1 for 128)')
+    where_clause = Arel.sql("LENGTH(name) > 128")
+
+    update_column_in_batches(:users, :name, truncated_name) do |table, query|
+      query.where(where_clause)
+    end
+  end
+
+  def down
+    # noop
+  end
+end