I have a form with a string field that uses the IS_IN_SET validator.
The set of strings that is allowed must be generated dynamically each
time the form is generated. So I add the validator in the controller.
( See the snippet below. )
The problem is that sometimes I get "value not allowed" validation
errors from that field. Why? I am restricted to selecting only the
items in the list given to IS_IN_SE. It seems like it would be
impossible to select a value that is not allowed.
Maybe adding the validator in the controller is not correct but I
don't know what is the correct way!
Here is a snippet showing the controller and also the table definition
from the db.py file. (I stripped out the code for other fields just to
make the snippet shorter. )
Thanks in advance!
=======================
controller
=======================
def register_user_custom_form():
# Dynamically get the list of valid last names
last_names = get_last_names( ) # Call some function to get the
list
# Set the validator based on that
db.reg_test.last_name.requires = IS_IN_SET( last_names, zero =
"Select a Last Name" )
form=SQLFORM(db.reg_test)
if form.accepts(request.vars,session):
response.flash='Your account has been created'
elif form.errors:
response.flash='Your account has not been created'
### and get a list of all users
records=SQLTABLE(db().select(db.reg_test.ALL))
return dict(form=form,records=records)
=================
table definition
=================
db.define_table('reg_test',
Field('first_name',required=True,notnull=True,writable=True,
label="First Name"),
Field('last_name',required=True,notnull=True,writable=True, label=
"Last Name"),
)
db.reg_test.first_name.requires = IS_NOT_EMPTY()
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