validationform

[tejavardhan]

hi,
i am doing a validation for joining form .
when i write the code in python script

## Script (Python) "join_form_validate"
##bind container=container
##bind context=context
##bind namespace=
##bind script=script
##bind state=state
##bind subpath=traverse_subpath
##parameters=username='',email='',password='',password_confirm=''
##title=validates the Registration of a User
##
from Products.CMFPlone import PloneMessageFactory as _
 
reg_tool=context.portal_registration
def missing(field):
    state.setError(field, _(u'This field is required, please provide some information.'), 'input_required')
def nomatch(field):
    state.setError(field, _(u'Passwords do not match.'), 'nomatch_password')
def minlimit(field):
    state.setError(field, _(u'Passwords must contain at least 5 letters.'), 'min_password')
def notallowed(field):
    state.setError(field, _(u'This username is reserved. Please choose a different name.'), 'not_allowed')
 
if not username:
    missing('username')
if not email:
    missing('email')
if username and username == context.portal_url.getPortalObject().getId():
    notallowed('username')
 
properties = context.portal_properties.site_properties
if not properties.validate_email:
     if password!=password_confirm:
         nomatch('password')
         nomatch('password_confirm')
 
     if not password:
         missing('password')
     if not password_confirm:
         missing('password_confirm')
 
     if not state.getError('password') and len(password) < 5:
         minlimit('password')
         minlimit('password_confirm')
 
if not state.getError('username') and not reg_tool.isMemberIdAllowed(username):
    state.setError('username',
                   _(u'The login name you selected is already in use or is not valid. Please choose another.'),
                   'username_invalid' )
 
if state.getErrors():
    context.plone_utils.addPortalMessage(_(u'Please correct the indicated errors.'))
    return state.set(status='failure')
else:
    context.plone_utils.addPortalMessage(_(u'You have been registered.'))
    return state
 

the error is
Error Type:
KeyError

Error Value:
'bind state

[bartonc]

I don't see the import for context.. What module is that name coming from?