clinic/netforce_clinic/models/nation.py

from netforce.model import Model, fields

class Nation(Model):
    _name="clinic.nation"
    _string="Nationality"
    _key=['code']

    _fields={
        "name": fields.Char("Name",required=True,search=True),
        "code": fields.Char("Code",search=True),
    }

Nation.register()