gistfile1.txt

class DecencyValidator < ActiveModel::Validator
  def validate(record)
    I18n.locale = record.locale
    record.errors[:base] = I18n.t(:bad_words_warning) if filter_body(record.body, I18n.t(:bad_words).split( /, */ ) ).present?
  end
  
  private
  def filter_body( check_str = "", prohibited_words = [] )
    return nil if check_str.blank? || prohibited_words.blank?
    return check_str.downcase.gsub!(/[^a-z]/, " ").split(" ").uniq.map { |w| w if prohibited_words.include?( w )  }.compact!
  end
end