Django: openpyxl saving workbook as attachment

Question

Hi I have a quick question. I didn't find answer in internet maybe someone of you can help me.

So i want to save workbook as attachment but I don't know how lets see an example :

    from openpyxl import Workbook
    from openpyxl.cell import get_column_letter
    wb = Workbook(encoding='utf-8')
    dest_filename = 'file.xlsx'
    ws = wb.worksheets[0]
    ws.title = "range names"
    for col_idx in xrange(1, 40):
        col = get_column_letter(col_idx)
        for row in xrange(1, 600):
            ws.cell('%s%s'%(col, row)).value = '%s%s' % (col, row)
    ws = wb.create_sheet()
    ws.title = 'Pi'
    ws.cell('F5').value = 3.14

Then I tried :

response = HttpResponse(wb, content_type='application/vnd.ms-excel')
response['Content-Disposition'] = 'attachment; filename="foo.xls"'
return response

It's returning xlsx file indeed but in file there is only object adres not the content of file:

<openpyxl.workbook.Workbook object at 0x00000000042806D8>

Can someone help ?

Answer 1

Give it a try:

from openpyxl.writer.excel import save_virtual_workbook
...
response = HttpResponse(save_virtual_workbook(wb), content_type='application/vnd.ms-excel')

save_virtual_workbook was specially designed for your use case. Here's a docstring:

"""Return an in-memory workbook, suitable for a Django response."""