django template tag - format date range

format_date_range.py

from django import template

register = template.Library()

@register.simple_tag
def format_date_range(date_from, date_to, separator=" - ",
    format_str="%B %d, %Y", year_f=", %Y", month_f="%B", date_f=" %d"):
    """ Takes a start date, end date, separator and formatting strings and
        returns a pretty date range string
    """
    if (date_to and date_to != date_from):
        from_format = to_format = format_str
        if (date_from.year == date_to.year):
            from_format = from_format.replace(year_f, '')
            if (date_from.month == date_to.month):
                to_format = to_format.replace(month_f, '')
        return separator.join((date_from.strftime(from_format), date_to.strftime(to_format)))
    else:
        return date_from.strftime(format_str)

how it works? can u show exaple html code

thx

Thanks this was really helpful!

For those new to custom template tags (like me)

Required reading:
https://docs.djangoproject.com/en/1.10/howto/custom-template-tags/
https://docs.djangoproject.com/en/1.10/howto/custom-template-tags/#simple-tags

• place code in yourtagfile.py in templatetags directory with init.py
• Remember to {% load yourtagfile.py %} in templates that require custom template tag
• example use {% format_date_range event.date_start event.date_end %}