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""" this is forms validation classes
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http://formencode.org/module-formencode.validators.html
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for list off all availible validators
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we can create our own validators
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The table below outlines the options which can be used in a schema in addition to the validators themselves
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pre_validators [] These validators will be applied before the schema
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chained_validators [] These validators will be applied after the schema
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allow_extra_fields False If True, then it is not an error when keys that aren't associated with a validator are present
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filter_extra_fields False If True, then keys that aren't associated with a validator are removed
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if_key_missing NoDefault If this is given, then any keys that aren't available but are expected will be replaced with this value (and then validated). This does not override a present .if_missing attribute on validators. NoDefault is a special FormEncode class to mean that no default values has been specified and therefore missing keys shouldn't take a default value.
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ignore_key_missing False If True, then missing keys will be missing in the result, if the validator doesn't have .if_missing on it already
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<name> = formencode.validators.<name of validator>
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<name> must equal form name
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list=[1,2,3,4,5]
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for select use formencode.All(OneOf(list), Int())
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"""
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import formencode
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from formencode.validators import UnicodeString, OneOf, Int, Number, Regex
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from pylons.i18n.translation import _
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from webhelpers.pylonslib.secure_form import authentication_token
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class ValidAuthToken(formencode.validators.FancyValidator):
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messages = {'invalid_token':_('Token mismatch')}
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def validate_python(self, value, state):
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if value != authentication_token():
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raise formencode.Invalid(self.message('invalid_token', state, search_number=value), value, state)
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class LoginForm(formencode.Schema):
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allow_extra_fields = True
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filter_extra_fields = True
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username = UnicodeString(
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strip=True,
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min=3,
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not_empty=True,
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messages={
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'empty':_('Please enter a login'),
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'tooShort':_('Enter a value %(min)i characters long or more')}
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)
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password = UnicodeString(
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strip=True,
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min=3,
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not_empty=True,
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messages={
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'empty':_('Please enter a password'),
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'tooShort':_('Enter a value %(min)i characters long or more')}
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)
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