from trytond.pool import PoolMeta
from trytond.model import ModelSQL, ModelView, fields

class Subscription(metaclass=PoolMeta):
    __name__ = 'sale.subscription'

    equipments = fields.Many2Many('sale.subscription-optical_equipment.equipment', 'subscription', 'equipment', "Equipments")

class SubscriptionEquipment(ModelSQL):
    'Optical Equipment - Subscription'
    __name__ = 'sale.subscription-optical_equipment.equipment'
    
    subscription = fields.Many2One('sale_subscription', 'Subscription', select=True)
    equipment = fields.Many2One('optical_equipment.equipment', 'Equipment', select=True)