Calculate burden by member
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3 changed files with 29 additions and 0 deletions
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@ -10,4 +10,8 @@ class Expense < ApplicationRecord
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def monthly
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payment * PERIOD_OCCURENCES[period.to_sym] / 12
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end
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def self.total
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Expense.sum(&:payment)
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end
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end
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@ -1,3 +1,7 @@
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class Income < ApplicationRecord
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belongs_to :member
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def self.total
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Income.where(included: true).sum(&:amount)
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end
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end
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@ -1,2 +1,23 @@
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class Member < ApplicationRecord
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has_many :incomes
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def income
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incomes.sum(&:amount)
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end
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def included_income
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incomes.where(included: true).sum(&:amount)
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end
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def others_included_income
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Income.where(included: true) - included_income
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end
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def burden_percent
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(Income.total - others_included_income) / Income.total
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end
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def burden_amount
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burden_percent * Expense.total
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end
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end
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