discourse/db/migrate/20120425145456_add_display_...

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# frozen_string_literal: true
class AddDisplayUsernameToUsers < ActiveRecord::Migration[4.2]
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def up
add_column :users, :display_username, :string
execute "UPDATE users SET display_username = username"
execute "UPDATE users SET username = REPLACE(username, ' ', '')"
add_index :users, :username, unique: true
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end
def down
remove_index :users, :username
execute "UPDATE users SET username = display_username"
remove_column :users, :display_username
end
end