This gem transform an Array into a excel file using the spreadsheet gem. Usage @users = User.all @users.to_xls @users.to_xls(:headers => false) @users.to_xls(:columns => [:name, :role]) @users.to_xls(:columns => [:name, {:company => [:name, :address]}]) @users.to_xls(:columns => [:name, {:company => [:name, :address]}], :headers => [:name, :company, :address]) In order to send a file from the controller, you can […]