Django: DurationField with resolution in microseconds - django

Question

The django DurationField displays only HH:MM:SS in the django admin interface.
Unfortunately this is not enough in my current context.
I need to be able to show/edit microseconds in the admin interface.
How could this be done?
Update
This was a mistake. My data in the database was wrong. The microseconds where removed in a process before the data came into the database.
Django displayes the microseconds if there are any. You don't need to do anything to show them.

Answer 1

Have a look on source:
https://docs.djangoproject.com/en/2.0/_modules/django/db/models/fields/#DurationField
I think the way is to override forms.DurationField (https://docs.djangoproject.com/en/2.0/_modules/django/forms/fields/#DurationField) and to be exact these method:
from django.utils.duration import duration_string
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
be aware that there may be need to override these too django.utils.dateparse.parse_duration
def parse_duration(value):
"""Parse a duration string and return a datetime.timedelta.
The preferred format for durations in Django is '%d %H:%M:%S.%f'.
Also supports ISO 8601 representation and PostgreSQL's day-time interval
format.
"""
match = standard_duration_re.match(value)
if not match:
match = iso8601_duration_re.match(value) or postgres_interval_re.match(value)
if match:
kw = match.groupdict()
days = datetime.timedelta(float(kw.pop('days', 0) or 0))
sign = -1 if kw.pop('sign', '+') == '-' else 1
if kw.get('microseconds'):
kw['microseconds'] = kw['microseconds'].ljust(6, '0')
if kw.get('seconds') and kw.get('microseconds') and kw['seconds'].startswith('-'):
kw['microseconds'] = '-' + kw['microseconds']
kw = {k: float(v) for k, v in kw.items() if v is not None}
return days + sign * datetime.timedelta(**kw)