Persist multiple CashBookEntries

[stfnndrsn]

I'm trying to create severalt Economic::CashBookEntry and append them to Economic::CashBook entries

I can't find a way to persist them all at the same time.

cash_book = economic.cash_books.find(number: 1)
entry = Economic::CashBookEntry.new
entry.text = 'Random'
entry.amount = 100
entry.date = Time.now
cash_book.entries << entry