After looking at the docs for send_file and XlsxWriter, the error tells you that it is expecting a String but you are passing it an object of type XlsxWriter. You can try the path method to tell sendfile where the file is at...
send_file(doc.path, :disposition => 'attachment', :filename => "bitacora.xlsx", type: "application/xml")
You don't indicate any structure of your rails app so I'm assuming this is a controller method. You could probably do something along the lines of:
def trip_bit
@car = Car.find(params[:id])
@t = @car.trips.all
@trips = @t.order(:started_at)
if @trips then
doc = XlsxWriter.new
doc.quiet_booleans!
sheet = doc.add_sheet("Vitácora de Viajes "+@car.model+' '+@car.year.to_s)
sheet.freeze_top_left = 'A2'
sheet.add_row(['Salida', 'Llegada', 'Origen', 'Destino', 'Distancia', 'Duración', 'Score'])
@trips.each do |trip|
sheet.add_row([trip.started_at.to_s, trip.finished_at.to_s, if trip.origin then trip.origin.address end, if trip.destination then trip.destination.address end, trip.distance.to_s+'km', trip.duration.to_s+'min', trip.grade])
end
sheet.add_row(["","","","Total", @trips.map { |trip| trip.distance }.sum.to_s+"km", @trips.map { |trip| trip.duration}.sum.to_s+"min", ""])
else
redirect_to my_car_details_path
flash.now[:alert] = 'Este coche no tiene viajes registrados'
end
respond_to do |format|
format.xlsx
end
end
The code above is a straight up guess as XlsxWriter is a binding of a C library and the documentation from a Rails perspective is really thin and pretty much useless to me. I have been using the axlsx_rails gem. It allows you to define a template and just hand that template a Rails data structure. I highly encourage you to check it out at: https://github.com/straydogstudio/axlsx_rails
It allows you to keep working in a Rails-ish way. When I want to export a spreadsheet of users to xlsx I just do this in my controller:
def index
@users = User.active
respond_to do |format|
format.html
format.xlsx
end
end
Then in my views alongside my index.html.erb I have a file called index.xlsx.axlsx that looks like:
wb = xlsx_package.workbook
wb.add_worksheet(name: "Users") do |sheet|
sheet.add_row ['User', 'User Access Role']
@users.each do |user|
sheet.add_row [user.email, user.role.name]
end
end
As you can see you have your logic for spreadsheet creation in the template. The way you are doing it is very hack-is and messy.
