discourse/db/migrate/20120720013733_add_username_lower_to_users.rb
Sam Saffron 30990006a9 DEV: enable frozen string literal on all files
This reduces chances of errors where consumers of strings mutate inputs
and reduces memory usage of the app.

Test suite passes now, but there may be some stuff left, so we will run
a few sites on a branch prior to merging
2019-05-13 09:31:32 +08:00

14 lines
422 B
Ruby

# frozen_string_literal: true
class AddUsernameLowerToUsers < ActiveRecord::Migration[4.2]
def up
add_column :users, :username_lower, :string, limit: 20
execute "update users set username_lower = lower(username)"
add_index :users, [:username_lower], unique: true
change_column :users, :username_lower, :string, limit: 20, null: false
end
def down
remove_column :users, :username_lower
end
end