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- # frozen_string_literal: true
-
- # See also: USERNAME_RE in the Account class
-
- class UniqueUsernameValidator < ActiveModel::Validator
- def validate(account)
- return if account.username.nil?
-
- normalized_username = account.username.downcase
- normalized_domain = account.domain&.downcase
-
- scope = Account.where(Account.arel_table[:username].lower.eq normalized_username).where(Account.arel_table[:domain].lower.eq normalized_domain)
- scope = scope.where.not(id: account.id) if account.persisted?
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- account.errors.add(:username, :taken) if scope.exists?
- end
- end
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