* Optimize map { ... }.compact
using Enumerable#filter_map, supported since Ruby 2.7
* Add poyfill for Enumerable#filter_map
		
	
			
		
			
				
	
	
		
			14 lines
		
	
	
	
		
			682 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
			
		
		
	
	
			14 lines
		
	
	
	
		
			682 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
# frozen_string_literal: true
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class ExistingUsernameValidator < ActiveModel::EachValidator
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  def validate_each(record, attribute, value)
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    return if value.blank?
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    if options[:multiple]
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      missing_usernames = value.split(',').map { |username| username.strip.gsub(/\A@/, '') }.filter_map { |username| username unless Account.find_local(username) }
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      record.errors.add(attribute, I18n.t('existing_username_validator.not_found_multiple', usernames: missing_usernames.join(', '))) if missing_usernames.any?
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    else
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      record.errors.add(attribute, I18n.t('existing_username_validator.not_found')) unless Account.find_local(value.strip.gsub(/\A@/, ''))
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    end
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  end
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end
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