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https://github.com/maybe-finance/maybe.git
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f904d9d062
* Clean up time series models * Add value group rollup class for summarizing hierarchical data * Integrate new classes * Update UI to use new patterns * Update D3 charts to expect new data format * Clean up account model * More cleanup * Money improvements * Use new money fields * Remove invalid fixture data to avoid orphaned accountables * Update time series to work better with collections * Fix tests and UI bugs
65 lines
2.2 KiB
Ruby
65 lines
2.2 KiB
Ruby
class Money
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include Comparable
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include Arithmetic
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attr_reader :amount, :currency
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class << self
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def default_currency
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@default ||= Money::Currency.new(:usd)
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end
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def default_currency=(object)
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@default = Money::Currency.new(object)
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end
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end
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def initialize(obj, currency = Money.default_currency)
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unless obj.is_a?(Money) || obj.is_a?(Numeric) || obj.is_a?(BigDecimal)
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raise ArgumentError, "obj must be an instance of Money, Numeric, or BigDecimal"
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end
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@amount = obj.is_a?(Money) ? obj.amount : BigDecimal(obj.to_s)
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@currency = obj.is_a?(Money) ? obj.currency : Money::Currency.new(currency)
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end
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def cents_str(precision = @currency.default_precision)
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format_str = "%.#{precision}f"
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amount_str = format_str % @amount
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parts = amount_str.split(@currency.separator)
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return "" if parts.length < 2
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parts.last.ljust(precision, "0")
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end
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# Basic formatting only. Use the Rails number_to_currency helper for more advanced formatting.
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alias to_s format
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def format
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whole_part, fractional_part = sprintf("%.#{@currency.default_precision}f", @amount).split(".")
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whole_with_delimiters = whole_part.chars.to_a.reverse.each_slice(3).map(&:join).join(@currency.delimiter).reverse
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formatted_amount = "#{whole_with_delimiters}#{@currency.separator}#{fractional_part}"
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@currency.default_format.gsub("%n", formatted_amount).gsub("%u", @currency.symbol)
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end
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def to_json(*_args)
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{ amount: @amount, currency: @currency.iso_code }.to_json
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end
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def <=>(other)
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raise TypeError, "Money can only be compared with other Money objects except for 0" unless other.is_a?(Money) || other.eql?(0)
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return @amount <=> other if other.is_a?(Numeric)
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amount_comparison = @amount <=> other.amount
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return amount_comparison unless amount_comparison == 0
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@currency <=> other.currency
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end
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def default_format_options
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{
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unit: @currency.symbol,
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precision: @currency.default_precision,
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delimiter: @currency.delimiter,
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separator: @currency.separator
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}
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end
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end
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