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