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b3b71a0922
loading/saving interactions with the databases into django.db.backend. This helps external db backend writers and removes a bunch of database-specific if-tests in django.db.models.fields. Great work from Leo Soto. git-svn-id: http://code.djangoproject.com/svn/django/trunk@8131 bcc190cf-cafb-0310-a4f2-bffc1f526a37
178 lines
3.9 KiB
Python
178 lines
3.9 KiB
Python
"""
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31. Validation
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This is an experimental feature!
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Each model instance has a validate() method that returns a dictionary of
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validation errors in the instance's fields. This method has a side effect
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of converting each field to its appropriate Python data type.
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"""
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from django.db import models
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class Person(models.Model):
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is_child = models.BooleanField()
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name = models.CharField(max_length=20)
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birthdate = models.DateField()
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favorite_moment = models.DateTimeField()
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email = models.EmailField()
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best_time = models.TimeField()
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def __unicode__(self):
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return self.name
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__test__ = {'API_TESTS':"""
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>>> import datetime
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>>> valid_params = {
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... 'is_child': True,
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... 'name': 'John',
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... 'birthdate': datetime.date(2000, 5, 3),
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... 'favorite_moment': datetime.datetime(2002, 4, 3, 13, 23),
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... 'email': 'john@example.com',
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... 'best_time': datetime.time(16, 20),
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... }
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>>> p = Person(**valid_params)
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>>> p.validate()
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{}
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>>> p = Person(**dict(valid_params, id='23'))
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>>> p.validate()
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{}
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>>> p.id
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23
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>>> p = Person(**dict(valid_params, id='foo'))
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>>> p.validate()['id']
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[u'This value must be an integer.']
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>>> p = Person(**dict(valid_params, id=None))
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>>> p.validate()
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{}
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>>> repr(p.id)
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'None'
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>>> p = Person(**dict(valid_params, is_child='t'))
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>>> p.validate()
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{}
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>>> p.is_child
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True
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>>> p = Person(**dict(valid_params, is_child='f'))
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>>> p.validate()
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{}
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>>> p.is_child
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False
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>>> p = Person(**dict(valid_params, is_child=True))
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>>> p.validate()
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{}
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>>> p.is_child
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True
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>>> p = Person(**dict(valid_params, is_child=False))
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>>> p.validate()
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{}
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>>> p.is_child
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False
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>>> p = Person(**dict(valid_params, is_child='foo'))
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>>> p.validate()['is_child']
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[u'This value must be either True or False.']
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>>> p = Person(**dict(valid_params, name=u'Jose'))
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>>> p.validate()
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{}
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>>> p.name
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u'Jose'
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>>> p = Person(**dict(valid_params, name=227))
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>>> p.validate()
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{}
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>>> p.name
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u'227'
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>>> p = Person(**dict(valid_params, birthdate=datetime.date(2000, 5, 3)))
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>>> p.validate()
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{}
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>>> p.birthdate
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datetime.date(2000, 5, 3)
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>>> p = Person(**dict(valid_params, birthdate=datetime.datetime(2000, 5, 3)))
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>>> p.validate()
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{}
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>>> p.birthdate
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datetime.date(2000, 5, 3)
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>>> p = Person(**dict(valid_params, birthdate='2000-05-03'))
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>>> p.validate()
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{}
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>>> p.birthdate
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datetime.date(2000, 5, 3)
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>>> p = Person(**dict(valid_params, birthdate='2000-5-3'))
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>>> p.validate()
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{}
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>>> p.birthdate
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datetime.date(2000, 5, 3)
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>>> p = Person(**dict(valid_params, birthdate='foo'))
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>>> p.validate()['birthdate']
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[u'Enter a valid date in YYYY-MM-DD format.']
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>>> p = Person(**dict(valid_params, favorite_moment=datetime.datetime(2002, 4, 3, 13, 23)))
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>>> p.validate()
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{}
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>>> p.favorite_moment
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datetime.datetime(2002, 4, 3, 13, 23)
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>>> p = Person(**dict(valid_params, favorite_moment=datetime.datetime(2002, 4, 3)))
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>>> p.validate()
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{}
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>>> p.favorite_moment
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datetime.datetime(2002, 4, 3, 0, 0)
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>>> p = Person(**dict(valid_params, best_time='16:20:00'))
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>>> p.validate()
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{}
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>>> p.best_time
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datetime.time(16, 20)
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>>> p = Person(**dict(valid_params, best_time='16:20'))
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>>> p.validate()
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{}
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>>> p.best_time
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datetime.time(16, 20)
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>>> p = Person(**dict(valid_params, best_time='bar'))
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>>> p.validate()['best_time']
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[u'Enter a valid time in HH:MM[:ss[.uuuuuu]] format.']
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>>> p = Person(**dict(valid_params, email='john@example.com'))
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>>> p.validate()
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{}
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>>> p.email
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'john@example.com'
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>>> p = Person(**dict(valid_params, email=u'john@example.com'))
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>>> p.validate()
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{}
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>>> p.email
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u'john@example.com'
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>>> p = Person(**dict(valid_params, email=22))
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>>> p.validate()['email']
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[u'Enter a valid e-mail address.']
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# Make sure that Date and DateTime return validation errors and don't raise Python errors.
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>>> p = Person(name='John Doe', is_child=True, email='abc@def.com')
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>>> errors = p.validate()
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>>> errors['favorite_moment']
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[u'This field is required.']
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>>> errors['birthdate']
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[u'This field is required.']
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>>> errors['best_time']
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[u'This field is required.']
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"""}
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