nk20/apps/note/templatetags/pretty_money.py

# Copyright (C) 2018-2021 by BDE ENS Paris-Saclay
# SPDX-License-Identifier: GPL-3.0-or-later

from django import template


def pretty_money(value):
    try:
        if value % 100 == 0:
            return "{:s}{:d} €".format(
                "- " if value < 0 else "",
                abs(value) // 100,
            )
        else:
            return "{:s}{:d}.{:02d} €".format(
                "- " if value < 0 else "",
                abs(value) // 100,
                abs(value) % 100,
            )
    except (ValueError, TypeError):
        return "0 €"


register = template.Library()
register.filter('pretty_money', pretty_money)