how to create sequence number in openerp 7 like below
its already supported for
<field name="prefix">STJ/%(year)s/</field>
but i need to add my own record & create like this
<field name="prefix">%(employer_no)s/</field>
employer_no mention in my form
please refer my code in here https://github.com/priyankahdp/openerp/blob/openerp/