Class: ActiveModel::Validations::BarcodeValidator

Inherits:
EachValidator
  • Object
show all
Defined in:
lib/active_validators/active_model/validations/barcode_validator.rb

Instance Method Summary collapse

Instance Method Details

#check_validity! ⇒ Object

We check the validity of :format option More at github.com/rails/rails/blob/aa7fdfb859d8a73f58460a7aba7174a47b5101d5/activemodel/lib/active_model/validator.rb#L180

Raises:

  • (ArgumentError) 


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# File 'lib/active_validators/active_model/validations/barcode_validator.rb', line 6

def check_validity!
  format = options.fetch(:format)
  raise ArgumentError, ":format cannot be blank!" if format.blank?
  method = "valid_#{format.to_s}?"
  raise ArgumentError, "Barcode format (#{format}) not supported" unless self.respond_to?(method)
end

#valid_ean13?(value) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_validators/active_model/validations/barcode_validator.rb', line 18

def valid_ean13?(value)
  if value =~ /^\d{13}$/
    ean13_check_digit(value.slice(0,12)) == value.slice(12)
  end
end

#validate_each(record, attribute, value) ⇒ Object 



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# File 'lib/active_validators/active_model/validations/barcode_validator.rb', line 13

def validate_each(record, attribute, value)
  method = "valid_#{options[:format].to_s}?"
  record.errors.add(attribute) if value.blank? || !self.send(method, value.to_s)
end