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Refactored naturaltime to use a class-based formatter
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Claude Paroz
parent
e0d0fc0b14
commit
56611a96df
@ -9,7 +9,8 @@ from django.utils.formats import number_format
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from django.utils.safestring import mark_safe
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from django.utils.timezone import is_aware, utc
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from django.utils.translation import (
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gettext as _, ngettext, npgettext_lazy, pgettext,
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gettext as _, gettext_lazy, ngettext, ngettext_lazy, npgettext_lazy,
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pgettext,
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)
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register = template.Library()
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@ -214,79 +215,89 @@ def naturaltime(value):
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For date and time values show how many seconds, minutes, or hours ago
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compared to current timestamp return representing string.
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"""
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if not isinstance(value, date): # datetime is a subclass of date
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return value
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return NaturalTimeFormatter.string_for(value)
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now = datetime.now(utc if is_aware(value) else None)
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if value < now:
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delta = now - value
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if delta.days != 0:
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# Translators: delta will contain a string like '2 months' or '1 month, 2 weeks'
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return _('%(delta)s ago') % {'delta': defaultfilters.timesince(value, now, time_strings={
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# Translators: 'naturaltime-past' strings will be included in
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# '%(delta)s ago'
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'year': npgettext_lazy('naturaltime-past', '%d year', '%d years'),
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'month': npgettext_lazy('naturaltime-past', '%d month', '%d months'),
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'week': npgettext_lazy('naturaltime-past', '%d week', '%d weeks'),
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'day': npgettext_lazy('naturaltime-past', '%d day', '%d days'),
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'hour': npgettext_lazy('naturaltime-past', '%d hour', '%d hours'),
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'minute': npgettext_lazy('naturaltime-past', '%d minute', '%d minutes')
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})}
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elif delta.seconds == 0:
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return _('now')
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elif delta.seconds < 60:
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return ngettext(
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# Translators: please keep a non-breaking space (U+00A0)
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# between count and time unit.
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'a second ago', '%(count)s seconds ago', delta.seconds
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) % {'count': delta.seconds}
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elif delta.seconds // 60 < 60:
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count = delta.seconds // 60
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return ngettext(
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# Translators: please keep a non-breaking space (U+00A0)
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# between count and time unit.
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'a minute ago', '%(count)s minutes ago', count
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) % {'count': count}
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class NaturalTimeFormatter:
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time_strings = {
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# Translators: delta will contain a string like '2 months' or '1 month, 2 weeks'
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'past-day': gettext_lazy('%(delta)s ago'),
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# Translators: please keep a non-breaking space (U+00A0) between count
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# and time unit.
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'past-hour': ngettext_lazy('an hour ago', '%(count)s hours ago', 'count'),
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# Translators: please keep a non-breaking space (U+00A0) between count
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# and time unit.
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'past-minute': ngettext_lazy('a minute ago', '%(count)s minutes ago', 'count'),
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# Translators: please keep a non-breaking space (U+00A0) between count
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# and time unit.
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'past-second': ngettext_lazy('a second ago', '%(count)s seconds ago', 'count'),
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'now': gettext_lazy('now'),
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# Translators: please keep a non-breaking space (U+00A0) between count
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# and time unit.
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'future-second': ngettext_lazy('a second from now', '%(count)s seconds from now', 'count'),
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# Translators: please keep a non-breaking space (U+00A0) between count
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# and time unit.
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'future-minute': ngettext_lazy('a minute from now', '%(count)s minutes from now', 'count'),
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# Translators: please keep a non-breaking space (U+00A0) between count
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# and time unit.
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'future-hour': ngettext_lazy('an hour from now', '%(count)s hours from now', 'count'),
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# Translators: delta will contain a string like '2 months' or '1 month, 2 weeks'
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'future-day': gettext_lazy('%(delta)s from now'),
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}
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past_substrings = {
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# Translators: 'naturaltime-past' strings will be included in '%(delta)s ago'
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'year': npgettext_lazy('naturaltime-past', '%d year', '%d years'),
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'month': npgettext_lazy('naturaltime-past', '%d month', '%d months'),
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'week': npgettext_lazy('naturaltime-past', '%d week', '%d weeks'),
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'day': npgettext_lazy('naturaltime-past', '%d day', '%d days'),
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'hour': npgettext_lazy('naturaltime-past', '%d hour', '%d hours'),
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'minute': npgettext_lazy('naturaltime-past', '%d minute', '%d minutes'),
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}
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future_substrings = {
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# Translators: 'naturaltime-future' strings will be included in '%(delta)s from now'
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'year': npgettext_lazy('naturaltime-future', '%d year', '%d years'),
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'month': npgettext_lazy('naturaltime-future', '%d month', '%d months'),
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'week': npgettext_lazy('naturaltime-future', '%d week', '%d weeks'),
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'day': npgettext_lazy('naturaltime-future', '%d day', '%d days'),
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'hour': npgettext_lazy('naturaltime-future', '%d hour', '%d hours'),
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'minute': npgettext_lazy('naturaltime-future', '%d minute', '%d minutes'),
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}
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@classmethod
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def string_for(cls, value):
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if not isinstance(value, date): # datetime is a subclass of date
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return value
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now = datetime.now(utc if is_aware(value) else None)
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if value < now:
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delta = now - value
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if delta.days != 0:
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return cls.time_strings['past-day'] % {
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'delta': defaultfilters.timesince(value, now, time_strings=cls.past_substrings),
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}
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elif delta.seconds == 0:
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return cls.time_strings['now']
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elif delta.seconds < 60:
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return cls.time_strings['past-second'] % {'count': delta.seconds}
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elif delta.seconds // 60 < 60:
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count = delta.seconds // 60
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return cls.time_strings['past-minute'] % {'count': count}
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else:
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count = delta.seconds // 60 // 60
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return cls.time_strings['past-hour'] % {'count': count}
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else:
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count = delta.seconds // 60 // 60
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return ngettext(
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# Translators: please keep a non-breaking space (U+00A0)
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# between count and time unit.
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'an hour ago', '%(count)s hours ago', count
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) % {'count': count}
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else:
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delta = value - now
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if delta.days != 0:
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# Translators: delta will contain a string like '2 months' or '1 month, 2 weeks'
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return _('%(delta)s from now') % {'delta': defaultfilters.timeuntil(value, now, time_strings={
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# Translators: 'naturaltime-future' strings will be included in
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# '%(delta)s from now'
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'year': npgettext_lazy('naturaltime-future', '%d year', '%d years'),
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'month': npgettext_lazy('naturaltime-future', '%d month', '%d months'),
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'week': npgettext_lazy('naturaltime-future', '%d week', '%d weeks'),
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'day': npgettext_lazy('naturaltime-future', '%d day', '%d days'),
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'hour': npgettext_lazy('naturaltime-future', '%d hour', '%d hours'),
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'minute': npgettext_lazy('naturaltime-future', '%d minute', '%d minutes')
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})}
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elif delta.seconds == 0:
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return _('now')
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elif delta.seconds < 60:
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return ngettext(
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# Translators: please keep a non-breaking space (U+00A0)
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# between count and time unit.
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'a second from now', '%(count)s seconds from now', delta.seconds
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) % {'count': delta.seconds}
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elif delta.seconds // 60 < 60:
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count = delta.seconds // 60
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return ngettext(
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# Translators: please keep a non-breaking space (U+00A0)
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# between count and time unit.
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'a minute from now', '%(count)s minutes from now', count
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) % {'count': count}
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else:
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count = delta.seconds // 60 // 60
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return ngettext(
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# Translators: please keep a non-breaking space (U+00A0)
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# between count and time unit.
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'an hour from now', '%(count)s hours from now', count
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) % {'count': count}
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delta = value - now
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if delta.days != 0:
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return cls.time_strings['future-day'] % {
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'delta': defaultfilters.timeuntil(value, now, time_strings=cls.future_substrings),
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}
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elif delta.seconds == 0:
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return cls.time_strings['now']
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elif delta.seconds < 60:
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return cls.time_strings['future-second'] % {'count': delta.seconds}
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elif delta.seconds // 60 < 60:
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count = delta.seconds // 60
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return cls.time_strings['future-minute'] % {'count': count}
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else:
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count = delta.seconds // 60 // 60
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return cls.time_strings['future-hour'] % {'count': count}
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