在django admin中更改Duration字段的格式 [英] Change format for Duration field in django admin
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问题描述
我在模型中使用 django
DurationField
来计算两个 DateTimeField
。
I'm using django
DurationField
in a model to calculate the time difference between two DateTimeField
.
在该模型的管理网站上,该字段显示如下:
On the admin site for that model, the field shows up like this:
# short duration
Cumulative Total time: 0:51:33
# longer duration
Cumulative Total time: 2 days, 3:10:21
是否可以将此字段的格式更改为以下给定格式?
Is it possible to change the format for this field to the below given format?
Cumulative Total time: 2 days, 3 hours, 10 minutes, 21 seconds
推荐答案
DurationField
具有与格式相关的以下代码:
The DurationField
has the following code that relates to formatting:
...
from django.utils.duration import duration_string
...
class DurationField(Field):
...
def value_to_string(self, obj):
val = self.value_from_object(obj)
return '' if val is None else duration_string(val)
和函数 duration_string
看起来像这样:
def duration_string(duration):
"""Version of str(timedelta) which is not English specific."""
days, hours, minutes, seconds, microseconds = _get_duration_components(duration)
string = '{:02d}:{:02d}:{:02d}'.format(hours, minutes, seconds)
if days:
string = '{} '.format(days) + string
if microseconds:
string += '.{:06d}'.format(microseconds)
return string
一种解决方案是创建自定义字段来覆盖上面列出的一种方法:
One solution is to create your custom field that overrides the one method listed above:
from django.utils.duration import _get_duration_components
class CustomDurationField(DurationField):
def value_to_string(self, obj):
val = self.value_from_object(obj)
if val is None:
return ''
days, hours, minutes, seconds, microseconds = _get_duration_components(val)
return '{} days, {:02d} hours, {:02d} minutes, {:02d}.{:06d} seconds'.format(
days, hours, minutes, seconds, microseconds)
您需要调整精确的输出以符合您的要求。
You would need to tweak the exact output to fit your requirements.
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