Global decimal rounding options in Django

Question

Decimal numbers are by default rounded very unexpectedly, in order to make it work normally, it is needed to use ROUND_HALF_UP option.

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Answer 1

Actually it doesn't work like Viktor suggested (although in django 1.5).

My solution is create and using a middleware like this:

# -*- coding: utf-8 -*-

import decimal
from django.conf import settings


class DecimalPrecisionMiddleware(object):
    def process_request(self, request):
        decimal_context = decimal.getcontext()
        decimal_context.prec = settings.DECIMAL_PRECISION # say: 4

and then in settings.py:

MIDDLEWARE_CLASSES = (
    'pathto.middleware.DecimalPrecisionMiddleware',
    # etc..
)