Account Move Line XLSX export

This module adds an Excel export directly on the Journal Items list (the account.move.line model). When you select one or more lines in that list, an "Export Selected Lines" action is available and produces an XLSX file.

The exported sheet is titled "Journal Items" and is set up for printing in landscape, fitted to one page wide, with a standard header and footer and frozen header row. It includes columns such as Entry, Name, Reference, Effective Date, Partner, Partner Reference, Account, Maturity Date, Debit, Credit, Balance, reconciliation reference, Reconcile Amount, Matched Debits, Matched Credits, Amount in Currency, Currency, Journal, Company Currency, Product, Product Reference, Unit of Measure, Quantity, Statement, Invoice, Residual Amount, Residual Amount in Currency, Notes, a blocked indicator and the line Id.

Debit, Credit and Balance columns are totalled at the bottom using spreadsheet formulas, with Balance computed as total Debit minus total Credit. Dates and amounts are formatted for readability.

The set of columns and their order can be adjusted by developers through the line model's export field list and template settings, but no configuration screen is provided by this module.