Python django.template.defaultfilters 模块，timesince() 实例源码

def check(request):
    return {
            'hostname': socket.gethostname(),
            'ips': ips,
            'cpus': psutil.cpu_count(),
            'uptime': timesince(datetime.fromtimestamp(psutil.boot_time())),
            'memory': {
                'total': filesizeformat(psutil.virtual_memory().total),
                'available': filesizeformat(psutil.virtual_memory().available),
                'used': filesizeformat(psutil.virtual_memory().used),
                'free': filesizeformat(psutil.virtual_memory().free),
                'percent': psutil.virtual_memory().percent
            },
            'swap': {
                'total': filesizeformat(psutil.swap_memory().total),
                'used': filesizeformat(psutil.swap_memory().used),
                'free': filesizeformat(psutil.swap_memory().free),
                'percent': psutil.swap_memory().percent
            }
        }

def test_timesince_or_never_returns_same_output_as_django_date(self):
        d = datetime.date(year=2014, month=3, day=7)
        c = django.template.Context({'date': d})
        t = django.template.Template('{{ date|timesince_or_never }}')
        self.assertEqual(defaultfilters.timesince(d), t.render(c))

def test_timesince_or_never_returns_same_output_as_django_datetime(self):
        now = datetime.datetime.now()
        c = django.template.Context({'date': now})
        t = django.template.Template('{{ date|timesince_or_never }}')
        self.assertEqual(defaultfilters.timesince(now), t.render(c))

def test_broken_filter(self):
        class MyTableBrokenFilter(MyTable):
            value = tables.Column('value',
                                  filters=(defaultfilters.timesince,))

        value = "not_a_date"
        data = TEST_DATA[0]
        data.value = value

        table = MyTableBrokenFilter(self.request, [data])
        resp = http.HttpResponse(table.render())
        self.assertContains(resp, value)

def timesince(value, now=None):
    from django.template.defaultfilters import timesince
    if now is None:
        now = timezone.now()
    if not value:
        return _('never')
    if value < (now - timedelta(days=5)):
        return value.date()
    value = (' '.join(timesince(value, now).split(' ')[0:2])).strip(',')
    if value == _('0 minutes'):
        return _('just now')
    if value == _('1 day'):
        return _('yesterday')
    return value + _(' ago')

def naturaltime(value):
    """
    For date and time values shows how many seconds, minutes or hours ago
    compared to current timestamp returns representing string.
    """
    if not isinstance(value, date): # datetime is a subclass of date
        return value

    now = datetime.now(utc if is_aware(value) else None)
    if value < now:
        delta = now - value
        if delta.days != 0:
            return pgettext(
                'naturaltime', '%(delta)s ago'
            ) % {'delta': defaultfilters.timesince(value, now)}
        elif delta.seconds == 0:
            return _('now')
        elif delta.seconds < 60:
            return ungettext(
                # Translators: \\u00a0 is non-breaking space
                'a second ago', '%(count)s\u00a0seconds ago', delta.seconds
            ) % {'count': delta.seconds}
        elif delta.seconds // 60 < 60:
            count = delta.seconds // 60
            return ungettext(
                # Translators: \\u00a0 is non-breaking space
                'a minute ago', '%(count)s\u00a0minutes ago', count
            ) % {'count': count}
        else:
            count = delta.seconds // 60 // 60
            return ungettext(
                # Translators: \\u00a0 is non-breaking space
                'an hour ago', '%(count)s\u00a0hours ago', count
            ) % {'count': count}
    else:
        delta = value - now
        if delta.days != 0:
            return pgettext(
                'naturaltime', '%(delta)s from now'
            ) % {'delta': defaultfilters.timeuntil(value, now)}
        elif delta.seconds == 0:
            return _('now')
        elif delta.seconds < 60:
            return ungettext(
                # Translators: \\u00a0 is non-breaking space
                'a second from now', '%(count)s\u00a0seconds from now', delta.seconds
            ) % {'count': delta.seconds}
        elif delta.seconds // 60 < 60:
            count = delta.seconds // 60
            return ungettext(
                # Translators: \\u00a0 is non-breaking space
                'a minute from now', '%(count)s\u00a0minutes from now', count
            ) % {'count': count}
        else:
            count = delta.seconds // 60 // 60
            return ungettext(
                # Translators: \\u00a0 is non-breaking space
                'an hour from now', '%(count)s\u00a0hours from now', count
            ) % {'count': count}