dates.py 文件源码

def get_date_list(self, queryset, date_type=None, ordering='ASC'):
        """
        Get a date list by calling `queryset.dates/datetimes()`, checking
        along the way for empty lists that aren't allowed.
        """
        date_field = self.get_date_field()
        allow_empty = self.get_allow_empty()
        if date_type is None:
            date_type = self.get_date_list_period()

        if self.uses_datetime_field:
            date_list = queryset.datetimes(date_field, date_type, ordering)
        else:
            date_list = queryset.dates(date_field, date_type, ordering)
        if date_list is not None and not date_list and not allow_empty:
            name = force_text(queryset.model._meta.verbose_name_plural)
            raise Http404(_("No %(verbose_name_plural)s available") %
                          {'verbose_name_plural': name})

        return date_list