clinic/netforce_clinic/models/branch.py

from netforce.model import Model, fields
from netforce.access import get_active_company

class Branch(Model):
    _name="clinic.branch"
    _string="Branch"
    _key=['name']
    _fields={
        "name": fields.Char("Name",required=True,search=True),
        "parent_id": fields.Many2One("clinic.branch","Parent"),
        "company_id": fields.Many2One("company","Company"),
    }

    _defaults={
        "company_id": lambda *a: get_active_company(),
    }

Branch.register()