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forms.py
58 lines | 2.7 KiB | text/x-python | PythonLexer
""" this is forms validation classes
http://formencode.org/module-formencode.validators.html
for list off all availible validators
we can create our own validators
The table below outlines the options which can be used in a schema in addition to the validators themselves
pre_validators [] These validators will be applied before the schema
chained_validators [] These validators will be applied after the schema
allow_extra_fields False If True, then it is not an error when keys that aren't associated with a validator are present
filter_extra_fields False If True, then keys that aren't associated with a validator are removed
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.
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
<name> = formencode.validators.<name of validator>
<name> must equal form name
list=[1,2,3,4,5]
for select use formencode.All(OneOf(list), Int())
"""
import formencode
from formencode.validators import UnicodeString, OneOf, Int, Number, Regex
from pylons.i18n.translation import _
from webhelpers.pylonslib.secure_form import authentication_token
class ValidAuthToken(formencode.validators.FancyValidator):
messages = {'invalid_token':_('Token mismatch')}
def validate_python(self, value, state):
if value != authentication_token():
raise formencode.Invalid(self.message('invalid_token', state, search_number=value), value, state)
class LoginForm(formencode.Schema):
allow_extra_fields = True
filter_extra_fields = True
username = UnicodeString(
strip=True,
min=3,
not_empty=True,
messages={
'empty':_('Please enter a login'),
'tooShort':_('Enter a value %(min)i characters long or more')}
)
password = UnicodeString(
strip=True,
min=3,
not_empty=True,
messages={
'empty':_('Please enter a password'),
'tooShort':_('Enter a value %(min)i characters long or more')}
)