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class AddLowerloginToUsers < ActiveRecord::Migration[4.2]
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def up
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add_column :users, :lower_login, :string, :limit => 255
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add_index :users, :lower_login, :unique => true
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User.reset_column_information
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User.unscoped.order("last_login_on DESC").each do |user|
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if User.find_by_login(user.login.downcase)
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dupe = 1
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dupe += 1 while User.find_by_login(new_login = "#{user.login}#{dupe}")
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say "Renaming duplicate user #{user.login} to #{new_login}"
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user.login = new_login
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else
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user.lower_login = user.login.downcase
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end
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user.save(:validate => false)
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end
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end
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def down
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remove_index :users, :lower_login
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remove_column :users, :lower_login
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end
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end
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