foodsoft/app/models/financial_link.rb

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class FinancialLink < ApplicationRecord
2018-09-14 19:33:27 +02:00
has_many :bank_transactions
has_many :financial_transactions
has_many :invoices
scope :incomplete, -> { with_full_sum.where.not('full_sums.full_sum' => 0) }
scope :unused, -> {
includes(:bank_transactions, :financial_transactions, :invoices)
.where(bank_transactions: { financial_link_id: nil })
.where(financial_transactions: { financial_link_id: nil })
.where(invoices: { financial_link_id: nil})
}
scope :with_full_sum, -> {
select(:id, :note, :full_sum).joins(<<-SQL)
LEFT JOIN (
SELECT id, COALESCE(bt_sum, 0) - COALESCE(ft_sum, 0) + COALESCE(i_sum, 0) AS full_sum
FROM financial_links fl
LEFT JOIN (
SELECT financial_link_id, SUM(amount) AS bt_sum
FROM bank_transactions
GROUP BY financial_link_id
) bt ON bt.financial_link_id = fl.id
LEFT JOIN (
SELECT financial_link_id, SUM(amount) AS ft_sum
FROM financial_transactions
GROUP BY financial_link_id
) ft ON ft.financial_link_id = fl.id
LEFT JOIN (
SELECT financial_link_id, SUM(amount) AS i_sum
FROM invoices
GROUP BY financial_link_id
) i ON i.financial_link_id = fl.id
) full_sums ON full_sums.id = financial_links.id
SQL
}
def self.first_unused_or_create
unused.first || create
end
def amount
bank_transactions.sum(:amount) + invoices.sum(:amount) - financial_transactions.sum(:amount)
end
end