本文整理汇总了Python中django.db.models.DurationField方法的典型用法代码示例。如果您正苦于以下问题：Python models.DurationField方法的具体用法？Python models.DurationField怎么用？Python models.DurationField使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类django.db.models的用法示例。
在下文中一共展示了models.DurationField方法的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_date_subtraction
# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import DurationField [as 别名]
def test_date_subtraction(self):
queryset = Experiment.objects.annotate(
completion_duration=ExpressionWrapper(
F('completed') - F('assigned'), output_field=models.DurationField()
)
)
at_least_5_days = {e.name for e in queryset.filter(completion_duration__gte=datetime.timedelta(days=5))}
self.assertEqual(at_least_5_days, {'e3', 'e4', 'e5'})
at_least_120_days = {e.name for e in queryset.filter(completion_duration__gte=datetime.timedelta(days=120))}
self.assertEqual(at_least_120_days, {'e5'})
less_than_5_days = {e.name for e in queryset.filter(completion_duration__lt=datetime.timedelta(days=5))}
expected = {'e0', 'e2'}
if connection.features.supports_microsecond_precision:
expected.add('e1')
self.assertEqual(less_than_5_days, expected) 示例2: test_durationfield_add
# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import DurationField [as 别名]
def test_durationfield_add(self):
zeros = [e.name for e in Experiment.objects.filter(start=F('start') + F('estimated_time'))]
self.assertEqual(zeros, ['e0'])
end_less = [e.name for e in Experiment.objects.filter(end__lt=F('start') + F('estimated_time'))]
self.assertEqual(end_less, ['e2'])
delta_math = [
e.name for e in
Experiment.objects.filter(end__gte=F('start') + F('estimated_time') + datetime.timedelta(hours=1))
]
self.assertEqual(delta_math, ['e4'])
queryset = Experiment.objects.annotate(shifted=ExpressionWrapper(
F('start') + Value(None, output_field=models.DurationField()),
output_field=models.DateTimeField(),
))
self.assertIsNone(queryset.first().shifted) 示例3: test_time_subtraction
# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import DurationField [as 别名]
def test_time_subtraction(self):
Time.objects.create(time=datetime.time(12, 30, 15, 2345))
queryset = Time.objects.annotate(
difference=ExpressionWrapper(
F('time') - Value(datetime.time(11, 15, 0), output_field=models.TimeField()),
output_field=models.DurationField(),
)
)
self.assertEqual(
queryset.get().difference,
datetime.timedelta(hours=1, minutes=15, seconds=15, microseconds=2345)
)
queryset = Time.objects.annotate(difference=ExpressionWrapper(
F('time') - Value(None, output_field=models.TimeField()),
output_field=models.DurationField(),
))
self.assertIsNone(queryset.first().difference)
queryset = Time.objects.annotate(shifted=ExpressionWrapper(
F('time') - Value(None, output_field=models.DurationField()),
output_field=models.TimeField(),
))
self.assertIsNone(queryset.first().shifted) 示例4: __init__
# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import DurationField [as 别名]
def __init__(self, expression, *, output_field=None, **extra):
super().__init__(expression, output_field=output_field or DurationField(), **extra) 示例5: __init__
# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import DurationField [as 别名]
def __init__(self, expression, **extra):
output_field = extra.pop('output_field', DurationField())
super(SecondsToInterval, self).__init__(expression, output_field=output_field, **extra) 示例6: test_should_auto_convert_duration
# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import DurationField [as 别名]
def test_should_auto_convert_duration():
assert_conversion(models.DurationField, graphene.Float) 示例7: test_time_subtraction
# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import DurationField [as 别名]
def test_time_subtraction(self):
if connection.features.supports_microsecond_precision:
time = datetime.time(12, 30, 15, 2345)
timedelta = datetime.timedelta(hours=1, minutes=15, seconds=15, microseconds=2345)
else:
time = datetime.time(12, 30, 15)
timedelta = datetime.timedelta(hours=1, minutes=15, seconds=15)
Time.objects.create(time=time)
queryset = Time.objects.annotate(
difference=ExpressionWrapper(
F('time') - Value(datetime.time(11, 15, 0), output_field=models.TimeField()),
output_field=models.DurationField(),
)
)
self.assertEqual(queryset.get().difference, timedelta) 示例8: test_date_minus_duration
# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import DurationField [as 别名]
def test_date_minus_duration(self):
self.skipTest("TODO fix TypeError: not enough arguments for format string")
# QUERY = 'SELECT [expressions_experiment].[id], [expressions_experiment].[name], [expressions_experiment].[assigned], [expressions_experiment].[completed], [expressions_experiment].[estimated_time], [expressions_experiment].[start], [expressions_experiment].[end] FROM [expressions_experiment] WHERE [expressions_experiment].[assigned] < ((DATEADD(MICROSECOND, (-1 * (%s %% 1000000)), CAST(DATEADD(SECOND, (%s / 1000000), CAST([expressions_experiment].[completed] as datetime2)) as datetime2)))) ORDER BY [expressions_experiment].[name] ASC' - PARAMS = (345600000000,); args=(345600000000,)
more_than_4_days = Experiment.objects.filter(
assigned__lt=F('completed') - Value(datetime.timedelta(days=4), output_field=models.DurationField())
)
self.assertQuerysetEqual(more_than_4_days, ['e3', 'e4', 'e5'], lambda e: e.name) 示例9: test_update_duration
# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import DurationField [as 别名]
def test_update_duration(self):
CaseTestModel.objects.update(
duration=Case(
# fails on sqlite if output_field is not set explicitly on all
# Values containing timedeltas
When(integer=1, then=Value(timedelta(1), output_field=models.DurationField())),
When(integer=2, then=Value(timedelta(2), output_field=models.DurationField())),
),
)
self.assertQuerysetEqual(
CaseTestModel.objects.all().order_by('pk'),
[(1, timedelta(1)), (2, timedelta(2)), (3, None), (2, timedelta(2)), (3, None), (3, None), (4, None)],
transform=attrgetter('integer', 'duration')
) 示例10: test_date_subtraction
# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import DurationField [as 别名]
def test_date_subtraction(self):
queryset = Experiment.objects.annotate(
completion_duration=ExpressionWrapper(
F('completed') - F('assigned'), output_field=models.DurationField()
)
)
at_least_5_days = {e.name for e in queryset.filter(completion_duration__gte=datetime.timedelta(days=5))}
self.assertEqual(at_least_5_days, {'e3', 'e4', 'e5'})
at_least_120_days = {e.name for e in queryset.filter(completion_duration__gte=datetime.timedelta(days=120))}
self.assertEqual(at_least_120_days, {'e5'})
less_than_5_days = {e.name for e in queryset.filter(completion_duration__lt=datetime.timedelta(days=5))}
self.assertEqual(less_than_5_days, {'e0', 'e1', 'e2'}) 示例11: test_time_subtraction
# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import DurationField [as 别名]
def test_time_subtraction(self):
Time.objects.create(time=datetime.time(12, 30, 15, 2345))
queryset = Time.objects.annotate(
difference=ExpressionWrapper(
F('time') - Value(datetime.time(11, 15, 0), output_field=models.TimeField()),
output_field=models.DurationField(),
)
)
self.assertEqual(
queryset.get().difference,
datetime.timedelta(hours=1, minutes=15, seconds=15, microseconds=2345)
) 示例12: test_datetime_subtraction_microseconds
# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import DurationField [as 别名]
def test_datetime_subtraction_microseconds(self):
delta = datetime.timedelta(microseconds=8999999999999999)
Experiment.objects.update(end=F('start') + delta)
qs = Experiment.objects.annotate(
delta=ExpressionWrapper(F('end') - F('start'), output_field=models.DurationField())
)
for e in qs:
self.assertEqual(e.delta, delta) 示例13: test_date_minus_duration
# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import DurationField [as 别名]
def test_date_minus_duration(self):
more_than_4_days = Experiment.objects.filter(
assigned__lt=F('completed') - Value(datetime.timedelta(days=4), output_field=models.DurationField())
)
self.assertQuerysetEqual(more_than_4_days, ['e3', 'e4', 'e5'], lambda e: e.name) 示例14: test_subtract_temporals
# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import DurationField [as 别名]
def test_subtract_temporals(self):
duration_field = DurationField()
duration_field_internal_type = duration_field.get_internal_type()
msg = (
'This backend does not support %s subtraction.' %
duration_field_internal_type
)
with self.assertRaisesMessage(NotSupportedError, msg):
self.ops.subtract_temporals(duration_field_internal_type, None, None) 示例15: test_formfield
# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import DurationField [as 别名]
def test_formfield(self):
field = models.DurationField()
self.assertIsInstance(field.formfield(), forms.DurationField)