Hledger.Data.TransactionModifier

A TransactionModifier is a rule that modifies certain Transactions, typically adding automated postings to them.

Documentation

modifyTransactions :: Day -> [TransactionModifier] -> [Transaction] -> Either String [Transaction]

Apply all the given transaction modifiers, in turn, to each transaction. Or if any of them fails to be parsed, return the first error. A reference date is provided to help interpret relative dates in transaction modifier queries.