我使用的是 Django 1.8，并且我的一个字段定义为 DurationField，但是如果我像这样输出它，我找不到任何方法可以在我的模板上正确显示它：
{{runtime}}
i just get 0:00:00.007980
是否有任何过滤器或任何其他方式来显示类似的东西
2hours 30 min
【问题讨论】：
不，我认为没有任何内置过滤器可以格式化timedelta，不过自己编写一个应该相当容易。
这是一个基本的例子：
from django import template
register = template.Library()
@register.filter
def duration(td):
total_seconds = int(td.total_seconds())
hours = total_seconds // 3600
minutes = (total_seconds % 3600) // 60
return '{} hours {} min'.format(hours, minutes)
【讨论】：
对Aumo回答的贡献：
from django import template
register = template.Library()
@register.filter
def duration(td):
total_seconds = int(td.total_seconds())
days = total_seconds // 86400
remaining_hours = total_seconds % 86400
remaining_minutes = remaining_hours % 3600
hours = remaining_hours // 3600
minutes = remaining_minutes // 60
seconds = remaining_minutes % 60
days_str = f'{days}d ' if days else ''
hours_str = f'{hours}h ' if hours else ''
minutes_str = f'{minutes}m ' if minutes else ''
seconds_str = f'{seconds}s' if seconds and not hours_str else ''
return f'{days_str}{hours_str}{minutes_str}{seconds_str}'
【讨论】：
这是我使用的，它会循环分钟并仅显示所需的信息：
@register.filter
def duration(timedelta):
"""
Format a duration field
"2h and 30 min" or only "45 min" for example
:rtype: str
"""
total_seconds = int(timedelta.total_seconds())
hours = total_seconds // 3600
minutes = round((total_seconds % 3600) / 60)
if minutes == 60:
hours += 1
minutes = 0
if hours and minutes:
# Display both
return f'{hours}h and {minutes} min'
elif hours:
# Display only hours
return f'{hours}h'
# Display only minutes
return f'{minutes} min'
【讨论】：
为了使爬虫和屏幕阅读器尽可能阅读，从而提高您的 SEO 评级，最佳做法是使用带有 datetime 属性的 html time 标签。
https://developer.mozilla.org/en-US/docs/Web/HTML/Element/time
https://www.w3.org/TR/2014/REC-html5-20141028/infrastructure.html#valid-duration-string
我编写了一个模板标签来完成持续时间的格式化，包括机器和人类可读的形式。这将显示天、小时、分钟、秒和微秒，使用可能的最大增量并隐藏任何 0 值。它还处理标签的复数化，并根据需要添加逗号和空格。
import datetime
from django import template
register = template.Library()
from django.template.defaultfilters import pluralize
@register.filter
def duration(value, mode=""):
assert mode in ["machine", "phrase", "clock"]
remainder = value
response = ""
days = 0
hours = 0
minutes = 0
seconds = 0
microseconds = 0
if remainder.days > 0:
days = remainder.days
remainder -= datetime.timedelta(days=remainder.days)
if round(remainder.seconds/3600) > 1:
hours = round(remainder.seconds/3600)
remainder -= datetime.timedelta(hours=hours)
if round(remainder.seconds/60) > 1:
minutes = round(remainder.seconds/60)
remainder -= datetime.timedelta(minutes=minutes)
if remainder.seconds > 0:
seconds = remainder.seconds
remainder -= datetime.timedelta(seconds=seconds)
if remainder.microseconds > 0:
microseconds = remainder.microseconds
remainder -= datetime.timedelta(microseconds=microseconds)
if mode == "machine":
response = "P{days}DT{hours}H{minutes}M{seconds}.{microseconds}S".format(
days=days,
hours=hours,
minutes=minutes,
seconds=seconds,
microseconds=str(microseconds).zfill(6),
)
elif mode == "phrase":
response = []
if days:
response.append(
"{days} day{plural_suffix}".format(
days=days,
plural_suffix=pluralize(days),
)
)
if hours:
response.append(
"{hours} hour{plural_suffix}".format(
hours=hours,
plural_suffix=pluralize(hours),
)
)
if minutes:
response.append(
"{minutes} minute{plural_suffix}".format(
minutes=minutes,
plural_suffix=pluralize(minutes),
)
)
if seconds:
response.append(
"{seconds} second{plural_suffix}".format(
seconds=seconds,
plural_suffix=pluralize(seconds),
)
)
if microseconds:
response.append(
"{microseconds} microsecond{plural_suffix}".format(
microseconds=microseconds,
plural_suffix=pluralize(microseconds),
)
)
response = ", ".join(response)
elif mode == "clock":
response = []
if days:
response.append(
"{days} day{plural_suffix}".format(
days=days,
plural_suffix=pluralize(days),
)
)
if hours or minutes or seconds or microseconds:
time_string = "{hours}:{minutes}".format(
hours = str(hours).zfill(2),
minutes = str(minutes).zfill(2),
)
if seconds or microseconds:
time_string += ":{seconds}".format(
seconds = str(seconds).zfill(2),
)
if microseconds:
time_string += ".{microseconds}".format(
microseconds = str(microseconds).zfill(6),
)
response.append(time_string)
response = ", ".join(response)
return response
{% load datetime %}
<!-- phrase format -->
<time datetime="{{ event.duration|duration:'machine' }}">
{{ event.duration|duration:'phrase' }}
</time>
<!-- clock format -->
<time datetime="{{ event.duration|duration:'machine' }}">
{{ event.duration|duration:'clock' }}
</time>
<!-- phrase format -->
<time datetime="P2DT1H0M0.000000S">2 days, 1 hour</time>
<!-- clock format -->
<time datetime="P2DT1H0M0.000000S">2 days, 01:00</time>
【讨论】：