Hello,
I am trying to do some validation before updating a record. My idea is to
verify that the new value of a field is bigger than the old one.
However I am not getting how to do it:
table definition:
db.define_table('t_myTable',
Field('f_year', type='integer',
label=T('Año')),
Field('f_quantity', type='integer',
label=T('cantidad')),
Field('f_user', type='reference auth_user',
label=T('Cargo'),default=auth.user_id,writable=False),
auth.signature,
format='%(f_year)s',
migrate=settings.migrate)
On my controller:
# -*- coding: utf-8 -*-
@auth.requires_login()
def viewTable():
form = SQLFORM.smartgrid(db.t_myTable,onupdate=auth.archive,deletable=
False,csv=False,details=False,searchable=False
,onvalidation=is_bigger)
return locals()
def is_bigger(form):
idUpdate = request.args(3).first
r = db(db.t_myTable.f_quantity==idUpdate.id).select()
if r.f_quantity < form.vars.f_quantity:
form.errors.f_quantity = 'Some error message ' % (r.f_quantity)
I am not getting the way of get the OLD row value before update
--
Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
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