module Virtus
  class Attribute

    # Attribute extension which nullifies blank attributes when coercion failed
    #
    module NullifyBlank

      # @see [Attribute#coerce]
      #
      # @api public
      def coerce(input)
        output = super

        if !value_coerced?(output) && input.blank?
          nil
        # Added to nullify anything that is blank not just strings.
        elsif output.blank? && output != false
          nil
        else
          output
        end
      end

    end # NullifyBlank

  end # Attribute
end # Virtus