Class: PottyMouthValidator

Inherits:
ActiveModel::EachValidator
  • Object
show all
Defined in:
lib/validates_potty_mouth/potty_mouth_validator.rb

Overview

this is not namespaced so that we can do

validates :body, potty_mouth: true

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.add_word_list(type, path) ⇒ Object 



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# File 'lib/validates_potty_mouth/potty_mouth_validator.rb', line 35

def add_word_list(type, path)
  banned_word_lists[type.to_sym] = File.read(path).split("\n").map{|word| word.chomp.downcase}.to_set
end

.banned_word_lists ⇒ Object 



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# File 'lib/validates_potty_mouth/potty_mouth_validator.rb', line 31

def banned_word_lists
  @lists ||= Hash.new { Set.new }
end

Instance Method Details

#banned?(value) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/validates_potty_mouth/potty_mouth_validator.rb', line 14

def banned?(value)
  text = value.gsub(/[\W\d]/, ' ') # get rid of non-letters
  words = text.split.to_set
  words.any?{|word| banned_word?(word)}
end

#banned_word?(word) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/validates_potty_mouth/potty_mouth_validator.rb', line 20

def banned_word?(word)
  down_word = word.downcase
  banned_word_list.include?(down_word) ||
    banned_word_list.include?(down_word.stem)
end

#banned_word_list ⇒ Object 



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# File 'lib/validates_potty_mouth/potty_mouth_validator.rb', line 26

def banned_word_list
  self.class.banned_word_lists[options.fetch(:list, :default)]
end

#validate_each(record, attribute, value) ⇒ Object 



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# File 'lib/validates_potty_mouth/potty_mouth_validator.rb', line 6

def validate_each(record, attribute, value)
  return true if value.blank?

  if banned?(value)
    record.errors[attribute] << options.fetch(:message, "contains objectionable content")
  end
end