Module: Money::Helpers

Defined in:
lib/money/helpers.rb

Constant Summary collapse

NUMERIC_REGEX = 
/\A\s*[\+\-]?(\d+|\d*\.\d+)\s*\z/
DECIMAL_ZERO = 
BigDecimal(0).freeze
MAX_DECIMAL = 
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Class Method Summary collapse

Class Method Details

.string_to_decimal(num) ⇒ Object 



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# File 'lib/money/helpers.rb', line 58

def string_to_decimal(num)
  if num =~ NUMERIC_REGEX
    return BigDecimal(num)
  end

  Money.deprecate("using Money.new('#{num}') is deprecated and will raise an ArgumentError in the next major release")
  begin
    BigDecimal(num)
  rescue ArgumentError
    DECIMAL_ZERO
  end
end

.value_to_currency(currency) ⇒ Object 



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# File 'lib/money/helpers.rb', line 36

def value_to_currency(currency)
  case currency
  when Money::Currency, Money::NullCurrency
    currency
  when nil, ''
    default = Money.current_currency || Money.default_currency
    raise(ArgumentError, 'missing currency') if default.nil? || default == ''
    value_to_currency(default)
  when 'xxx', 'XXX'
    Money::NULL_CURRENCY
  when String
    begin
      Currency.find!(currency)
    rescue Money::Currency::UnknownCurrency => error
      Money.deprecate(error.message)
      Money::NULL_CURRENCY
    end
  else
    raise ArgumentError, "could not parse as currency #{currency.inspect}"
  end
end

.value_to_decimal(num) ⇒ Object 



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# File 'lib/money/helpers.rb', line 12

def value_to_decimal(num)
  value =
    case num
    when Money
      num.value
    when BigDecimal
      num
    when nil, 0, ''
      DECIMAL_ZERO
    when Integer
      BigDecimal(num)
    when Float
      BigDecimal(num, Float::DIG)
    when Rational
      BigDecimal(num, MAX_DECIMAL)
    when String
      string_to_decimal(num)
    else
      raise ArgumentError, "could not parse as decimal #{num.inspect}"
    end
  return DECIMAL_ZERO if value.sign == BigDecimal::SIGN_NEGATIVE_ZERO
  value
end