date-based custom invoicing scheme

[Derek Atkins]

Gour <gour at atmarama.net> writes:

> Hello,
>
> I'm curious if anyone is using some custom numbering-scheme for
> invoices and/or how difficult would it be to implement one?
>
> I'd like invoices to use date-based numbering scheme in the format
> like:
>
> invoiceID-mm-yyyy
>
> where 'mm' and 'yyyy' represent month & year when the invoice was
> issued.
>
> I was told to use something like:
>
> @{id}-@{date_opened.strftime('%Y-%m')}

This is certainly possible (although I don't know the exact format).

> in my templates, but the problem is that {id} should be reset every
> month and/or every year.

This, however (resetting the number) is not possible.  The Invoice# is
monotonically increasing.

You're better off setting the Invoice# to something like:  YYYYMM000;
but then you need to manually reset the number every month.  Or you can
use YYYY0000 and reset it every year.

-derek

-- 
       Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
       Member, MIT Student Information Processing Board  (SIPB)
       URL: http://web.mit.edu/warlord/    PP-ASEL-IA     N1NWH
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