from trytond.pool import Pool, PoolMeta from trytond.model import ModelView, ModelSQL from trytond.model import fields class SaleLine(ModelSQL, ModelView, metaclass=PoolMeta): 'SaleLine' __name__ = 'sale.line' mark_category = fields.Many2One('product.category', 'Mark') model_category = fields.Many2One('product.category', "Model") reference = fields.Char("Reference", size=None, required=True) origin_country = fields.Many2One('country.country',"Origin Country") software_version = fields.Char( "Software version", size=None, required=True) useful_life = fields.Char( "Useful life", size=None, required=True) warranty = fields.Char( "Warranty", size=None, required=True) serial = fields.Char( "Serial", size=None, required=True) health_register = fields.Char( "Serial", size=None, required=True) refurbish = fields.Boolean('Refurbish')