我们从Python开源项目中，提取了以下50个代码示例，用于说明如何使用django.db.models.DateTimeField()。
def display_for_field(value, field, empty_value_display): from django.contrib.admin.templatetags.admin_list import _boolean_icon if getattr(field, 'flatchoices', None): return dict(field.flatchoices).get(value, empty_value_display) # NullBooleanField needs special-case null-handling, so it comes # before the general null test. elif isinstance(field, models.BooleanField) or isinstance(field, models.NullBooleanField): return _boolean_icon(value) elif value is None: return empty_value_display elif isinstance(field, models.DateTimeField): return formats.localize(timezone.template_localtime(value)) elif isinstance(field, (models.DateField, models.TimeField)): return formats.localize(value) elif isinstance(field, models.DecimalField): return formats.number_format(value, field.decimal_places) elif isinstance(field, (models.IntegerField, models.FloatField)): return formats.number_format(value) elif isinstance(field, models.FileField) and value: return format_html('<a href="{}">{}</a>', value.url, value) else: return smart_text(value)
def _check_date_hierarchy(self, obj): """ Check that date_hierarchy refers to DateField or DateTimeField. """ if obj.date_hierarchy is None: return [] else: try: field = obj.model._meta.get_field(obj.date_hierarchy) except FieldDoesNotExist: return refer_to_missing_field(option='date_hierarchy', field=obj.date_hierarchy, model=obj.model, obj=obj, id='admin.E127') else: if not isinstance(field, (models.DateField, models.DateTimeField)): return must_be('a DateField or DateTimeField', option='date_hierarchy', obj=obj, id='admin.E128') else: return []
def get_db_converters(self, expression): converters = super(DatabaseOperations, self).get_db_converters(expression) internal_type = expression.output_field.get_internal_type() if internal_type == 'TextField': converters.append(self.convert_textfield_value) elif internal_type == 'BinaryField': converters.append(self.convert_binaryfield_value) elif internal_type in ['BooleanField', 'NullBooleanField']: converters.append(self.convert_booleanfield_value) elif internal_type == 'DateTimeField': converters.append(self.convert_datetimefield_value) elif internal_type == 'DateField': converters.append(self.convert_datefield_value) elif internal_type == 'TimeField': converters.append(self.convert_timefield_value) elif internal_type == 'UUIDField': converters.append(self.convert_uuidfield_value) converters.append(self.convert_empty_values) return converters
def adapt_datetimefield_value(self, value): """ Transform a datetime value to an object compatible with what is expected by the backend driver for datetime columns. If naive datetime is passed assumes that is in UTC. Normally Django models.DateTimeField makes sure that if USE_TZ is True passed datetime is timezone aware. """ if value is None: return None # cx_Oracle doesn't support tz-aware datetimes if timezone.is_aware(value): if settings.USE_TZ: value = timezone.make_naive(value, self.connection.timezone) else: raise ValueError("Oracle backend does not support timezone-aware datetimes when USE_TZ is False.") return Oracle_datetime.from_datetime(value)
def display_for_field(value, field, empty_value_display): from django.contrib.admin.templatetags.admin_list import _boolean_icon if getattr(field, 'flatchoices', None): return dict(field.flatchoices).get(value, empty_value_display) # NullBooleanField needs special-case null-handling, so it comes # before the general null test. elif isinstance(field, models.BooleanField) or isinstance(field, models.NullBooleanField): return _boolean_icon(value) elif value is None: return empty_value_display elif isinstance(field, models.DateTimeField): return formats.localize(timezone.template_localtime(value)) elif isinstance(field, (models.DateField, models.TimeField)): return formats.localize(value) elif isinstance(field, models.DecimalField): return formats.number_format(value, field.decimal_places) elif isinstance(field, (models.IntegerField, models.FloatField)): return formats.number_format(value) elif isinstance(field, models.FileField) and value: return format_html('<a href="{}">{}</a>', value.url, value) else: return display_for_value(value, empty_value_display)
def _check_date_hierarchy(self, obj): """ Check that date_hierarchy refers to DateField or DateTimeField. """ if obj.date_hierarchy is None: return [] else: try: field = obj.model._meta.get_field(obj.date_hierarchy) except FieldDoesNotExist: return refer_to_missing_field( option='date_hierarchy', field=obj.date_hierarchy, model=obj.model, obj=obj, id='admin.E127', ) else: if not isinstance(field, (models.DateField, models.DateTimeField)): return must_be('a DateField or DateTimeField', option='date_hierarchy', obj=obj, id='admin.E128') else: return []
def display_for_field(value, field): from xadmin.views.list import EMPTY_CHANGELIST_VALUE if field.flatchoices: return dict(field.flatchoices).get(value, EMPTY_CHANGELIST_VALUE) # NullBooleanField needs special-case null-handling, so it comes # before the general null test. elif isinstance(field, models.BooleanField) or isinstance(field, models.NullBooleanField): return boolean_icon(value) elif value is None: return EMPTY_CHANGELIST_VALUE elif isinstance(field, models.DateTimeField): return formats.localize(tz_localtime(value)) elif isinstance(field, (models.DateField, models.TimeField)): return formats.localize(value) elif isinstance(field, models.DecimalField): return formats.number_format(value, field.decimal_places) elif isinstance(field, models.FloatField): return formats.number_format(value) elif isinstance(field.rel, models.ManyToManyRel): return ', '.join([smart_text(obj) for obj in value.all()]) else: return smart_text(value)
def _check_date_hierarchy(self, obj): """ Check that date_hierarchy refers to DateField or DateTimeField. """ if obj.date_hierarchy is None: return [] else: try: field = get_fields_from_path(obj.model, obj.date_hierarchy)[-1] except (NotRelationField, FieldDoesNotExist): return [ checks.Error( "The value of 'date_hierarchy' refers to '%s', which " "does not refer to a Field." % obj.date_hierarchy, obj=obj.__class__, id='admin.E127', ) ] else: if not isinstance(field, (models.DateField, models.DateTimeField)): return must_be('a DateField or DateTimeField', option='date_hierarchy', obj=obj, id='admin.E128') else: return []
def display_for_field(value, field): from xadmin.views.list import EMPTY_CHANGELIST_VALUE if field.flatchoices: return dict(field.flatchoices).get(value, EMPTY_CHANGELIST_VALUE) # NullBooleanField needs special-case null-handling, so it comes # before the general null test. elif isinstance(field, models.BooleanField) or isinstance(field, models.NullBooleanField): return boolean_icon(value) elif value is None: return EMPTY_CHANGELIST_VALUE elif isinstance(field, models.DateTimeField): return formats.localize(tz_localtime(value)) elif isinstance(field, (models.DateField, models.TimeField)): return formats.localize(value) elif isinstance(field, models.DecimalField): return formats.number_format(value, field.decimal_places) elif isinstance(field, models.FloatField): return formats.number_format(value) elif isinstance(field.rel, models.ManyToManyRel): return ', '.join([smart_unicode(obj) for obj in value.all()]) else: return smart_unicode(value)
def check_created_field(model): """ Helper method to check if a given model has a created field. model must me a class that inherits from django.db.models.Model """ try: created = model._meta.get_field_by_name('created') assert isinstance(created, models.DateTimeField) except FieldDoesNotExist as err: raise FieldDoesNotExist( 'Reverse related model {} must have a created field.\n'.format( model.__name__ ) + str(err) ) except AssertionError: raise TypeError( '{}.created field must be a DateTimeField'.format(model.__name__) )
def __str__(self): return self.caption # class Cpu(models.Model): # # host = models.OneToOneField('Host') ???? # server = models.ForeignKey('Host') # cpu_model = models.CharField(verbose_name='CPU??', max_length=128,null=True) # cpu_count = models.SmallIntegerField(verbose_name='??CPU??',null=True) # cpu_core_count = models.SmallIntegerField(verbose_name='CPU???',null=True) # use = models.CharField(verbose_name='???',max_length=32,null=True) # memo = models.TextField(verbose_name='??', null=True,) # create_date = models.DateTimeField(auto_now_add=True, verbose_name='????') # update_date = models.DateTimeField(auto_now=True, null=True, verbose_name='????') # # class Meta: # db_table = 'Cpu' # verbose_name = 'CPU??' # verbose_name_plural = verbose_name # # unique_together=("host","cpu_model") ???? # # def __str__(self): # return self.cpu_model
def validate_prepopulated_fields(self, cls, model): " Validate that prepopulated_fields if a dictionary containing allowed field types. " # prepopulated_fields if hasattr(cls, 'prepopulated_fields'): check_isdict(cls, 'prepopulated_fields', cls.prepopulated_fields) for field, val in cls.prepopulated_fields.items(): f = get_field(cls, model, 'prepopulated_fields', field) if isinstance(f, (models.DateTimeField, models.ForeignKey, models.ManyToManyField)): raise ImproperlyConfigured("'%s.prepopulated_fields['%s']' " "is either a DateTimeField, ForeignKey or " "ManyToManyField. This isn't allowed." % (cls.__name__, field)) check_isseq(cls, "prepopulated_fields['%s']" % field, val) for idx, f in enumerate(val): get_field(cls, model, "prepopulated_fields['%s'][%d]" % (field, idx), f)
def display_for_field(value, field): from django.contrib.admin.templatetags.admin_list import _boolean_icon from django.contrib.admin.views.main import EMPTY_CHANGELIST_VALUE if field.flatchoices: return dict(field.flatchoices).get(value, EMPTY_CHANGELIST_VALUE) # NullBooleanField needs special-case null-handling, so it comes # before the general null test. elif isinstance(field, models.BooleanField) or isinstance(field, models.NullBooleanField): return _boolean_icon(value) elif value is None: return EMPTY_CHANGELIST_VALUE elif isinstance(field, models.DateTimeField): return formats.localize(timezone.template_localtime(value)) elif isinstance(field, (models.DateField, models.TimeField)): return formats.localize(value) elif isinstance(field, models.DecimalField): return formats.number_format(value, field.decimal_places) elif isinstance(field, models.FloatField): return formats.number_format(value) elif isinstance(field, models.FileField) and value: return format_html('<a href="{}">{}</a>', value.url, value) else: return smart_text(value)
def value_to_db_datetime(self, value): """ Transform a datetime value to an object compatible with what is expected by the backend driver for datetime columns. If naive datetime is passed assumes that is in UTC. Normally Django models.DateTimeField makes sure that if USE_TZ is True passed datetime is timezone aware. """ if value is None: return None # cx_Oracle doesn't support tz-aware datetimes if timezone.is_aware(value): if settings.USE_TZ: value = value.astimezone(timezone.utc).replace(tzinfo=None) else: raise ValueError("Oracle backend does not support timezone-aware datetimes when USE_TZ is False.") return Oracle_datetime.from_datetime(value)
def adapt_datetimefield_value(self, value): """ Transform a datetime value to an object compatible with what is expected by the backend driver for datetime columns. If naive datetime is passed assumes that is in UTC. Normally Django models.DateTimeField makes sure that if USE_TZ is True passed datetime is timezone aware. """ if value is None: return None # Expression values are adapted by the database. if hasattr(value, 'resolve_expression'): return value # cx_Oracle doesn't support tz-aware datetimes if timezone.is_aware(value): if settings.USE_TZ: value = timezone.make_naive(value, self.connection.timezone) else: raise ValueError("Oracle backend does not support timezone-aware datetimes when USE_TZ is False.") return Oracle_datetime.from_datetime(value)
def _make_single_date_lookup(self, date): """ Get the lookup kwargs for filtering on a single date. If the date field is a DateTimeField, we can't just filter on date_field=date because that doesn't take the time into account. """ date_field = self.get_date_field() if self.uses_datetime_field: since = self._make_date_lookup_arg(date) until = self._make_date_lookup_arg(date + datetime.timedelta(days=1)) return { '%s__gte' % date_field: since, '%s__lt' % date_field: until, } else: # Skip self._make_date_lookup_arg, it's a no-op in this branch. return {date_field: date}
def display_for_field(value, field): from xadmin.views.list import EMPTY_CHANGELIST_VALUE if field.flatchoices: return dict(field.flatchoices).get(value, EMPTY_CHANGELIST_VALUE) # NullBooleanField needs special-case null-handling, so it comes # before the general null test. elif isinstance(field, models.BooleanField) or isinstance(field, models.NullBooleanField): return boolean_icon(value) elif value is None: return EMPTY_CHANGELIST_VALUE elif isinstance(field, models.DateTimeField): return formats.localize(tz_localtime(value)) elif isinstance(field, (models.DateField, models.TimeField)): return formats.localize(value) elif isinstance(field, models.DecimalField): return formats.number_format(value, field.decimal_places) elif isinstance(field, models.FloatField): return formats.number_format(value) elif isinstance(field.rel, models.ManyToManyRel): return ', '.join([smart_unicode(obj) for obj in value.all()]) else: return value#smart_unicode(value)
