django/tests/regressiontests/model_fields/tests.py

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"""
>>> from django.db.models.fields import *
>>> try:
... from decimal import Decimal
... except ImportError:
... from django.utils._decimal import Decimal
# DecimalField
>>> f = DecimalField(max_digits=4, decimal_places=2)
>>> f.to_python(3) == Decimal("3")
True
>>> f.to_python("3.14") == Decimal("3.14")
True
>>> f.to_python("abc")
Traceback (most recent call last):
...
Removed oldforms, validators, and related code: * Removed `Manipulator`, `AutomaticManipulator`, and related classes. * Removed oldforms specific bits from model fields: * Removed `validator_list` and `core` arguments from constructors. * Removed the methods: * `get_manipulator_field_names` * `get_manipulator_field_objs` * `get_manipulator_fields` * `get_manipulator_new_data` * `prepare_field_objs_and_params` * `get_follow` * Renamed `flatten_data` method to `value_to_string` for better alignment with its use by the serialization framework, which was the only remaining code using `flatten_data`. * Removed oldforms methods from `django.db.models.Options` class: `get_followed_related_objects`, `get_data_holders`, `get_follow`, and `has_field_type`. * Removed oldforms-admin specific options from `django.db.models.fields.related` classes: `num_in_admin`, `min_num_in_admin`, `max_num_in_admin`, `num_extra_on_change`, and `edit_inline`. * Serialization framework * `Serializer.get_string_value` now calls the model fields' renamed `value_to_string` methods. * Removed a special-casing of `models.DateTimeField` in `core.serializers.base.Serializer.get_string_value` that's handled by `django.db.models.fields.DateTimeField.value_to_string`. * Removed `django.core.validators`: * Moved `ValidationError` exception to `django.core.exceptions`. * For the couple places that were using validators, brought over the necessary code to maintain the same functionality. * Introduced a SlugField form field for validation and to compliment the SlugField model field (refs #8040). * Removed an oldforms-style model creation hack (refs #2160). git-svn-id: http://code.djangoproject.com/svn/django/trunk@8616 bcc190cf-cafb-0310-a4f2-bffc1f526a37
2008-08-27 15:19:44 +08:00
ValidationError: This value must be a decimal number.
>>> f = DecimalField(max_digits=5, decimal_places=1)
>>> x = f.to_python(2)
>>> y = f.to_python('2.6')
>>> f._format(x)
u'2.0'
>>> f._format(y)
u'2.6'
>>> f._format(None)
>>> f.get_db_prep_lookup('exact', None)
[None]
# DateTimeField and TimeField to_python should support usecs:
>>> f = DateTimeField()
>>> f.to_python('2001-01-02 03:04:05.000006')
datetime.datetime(2001, 1, 2, 3, 4, 5, 6)
>>> f.to_python('2001-01-02 03:04:05.999999')
datetime.datetime(2001, 1, 2, 3, 4, 5, 999999)
>>> f = TimeField()
>>> f.to_python('01:02:03.000004')
datetime.time(1, 2, 3, 4)
>>> f.to_python('01:02:03.999999')
datetime.time(1, 2, 3, 999999)
# Boolean and null boolean fields
>>> f = BooleanField()
>>> for val in (True, '1', 1):
... f.get_db_prep_lookup('exact', val)
[True]
[True]
[True]
>>> for val in (False, '0', 0):
... f.get_db_prep_lookup('exact', val)
[False]
[False]
[False]
>>> f = NullBooleanField()
>>> for val in (True, '1', 1):
... f.get_db_prep_lookup('exact', val)
[True]
[True]
[True]
>>> for val in (False, '0', 0):
... f.get_db_prep_lookup('exact', val)
[False]
[False]
[False]
>>> f.get_db_prep_lookup('exact', None)
[None]
"""