to_s

# File activesupport/lib/active_support/core_ext/numeric/deprecated_conversions.rb, line 5
    def to_s(format = nil, options = nil)
      return super() if format.nil?

      case format
      when Integer, String
        super(format)
      when :phone
        ActiveSupport::Deprecation.warn(
          "#{self.class}#to_s(#{format.inspect}) is deprecated. Please use #{self.class}#to_formatted_s(#{format.inspect}) instead."
        )
        ActiveSupport::NumberHelper.number_to_phone(self, options || {})
      when :currency
        ActiveSupport::Deprecation.warn(
          "#{self.class}#to_s(#{format.inspect}) is deprecated. Please use #{self.class}#to_formatted_s(#{format.inspect}) instead."
        )
        ActiveSupport::NumberHelper.number_to_currency(self, options || {})
      when :percentage
        ActiveSupport::Deprecation.warn(
          "#{self.class}#to_s(#{format.inspect}) is deprecated. Please use #{self.class}#to_formatted_s(#{format.inspect}) instead."
        )
        ActiveSupport::NumberHelper.number_to_percentage(self, options || {})
      when :delimited
        ActiveSupport::Deprecation.warn(
          "#{self.class}#to_s(#{format.inspect}) is deprecated. Please use #{self.class}#to_formatted_s(#{format.inspect}) instead."
        )
        ActiveSupport::NumberHelper.number_to_delimited(self, options || {})
      when :rounded
        ActiveSupport::Deprecation.warn(
          "#{self.class}#to_s(#{format.inspect}) is deprecated. Please use #{self.class}#to_formatted_s(#{format.inspect}) instead."
        )
        ActiveSupport::NumberHelper.number_to_rounded(self, options || {})
      when :human
        ActiveSupport::Deprecation.warn(
          "#{self.class}#to_s(#{format.inspect}) is deprecated. Please use #{self.class}#to_formatted_s(#{format.inspect}) instead."
        )
        ActiveSupport::NumberHelper.number_to_human(self, options || {})
      when :human_size
        ActiveSupport::Deprecation.warn(
          "#{self.class}#to_s(#{format.inspect}) is deprecated. Please use #{self.class}#to_formatted_s(#{format.inspect}) instead."
        )
        ActiveSupport::NumberHelper.number_to_human_size(self, options || {})
      when Symbol
        ActiveSupport::Deprecation.warn(
          "#{self.class}#to_s(#{format.inspect}) is deprecated. Please use #{self.class}#to_formatted_s(#{format.inspect}) instead."
        )
        super()
      else
        super(format)
      end
    end