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fd941d714d
* Add loan and credit card views * Lint fix * Clean up overview card markup * Lint fix * Test fix
15 lines
540 B
Ruby
15 lines
540 B
Ruby
class Loan < ApplicationRecord
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include Accountable
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def monthly_payment
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return nil if term_months.nil? || interest_rate.nil? || rate_type.nil? || rate_type != "fixed"
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return Money.new(0, account.currency) if account.original_balance.zero? || term_months.zero?
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annual_rate = interest_rate / 100.0
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monthly_rate = annual_rate / 12.0
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payment = (account.original_balance * monthly_rate * (1 + monthly_rate)**term_months) / ((1 + monthly_rate)**term_months - 1)
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Money.new(payment.round, account.currency)
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end
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end
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