contract/agreement/models/agreement_line.py

# Copyright (C) 2018 - TODAY, Pavlov Media
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).

from odoo import api, fields, models


class AgreementLine(models.Model):
    _name = 'agreement.line'
    _description = 'Agreement Lines'

    product_id = fields.Many2one('product.product', string='Product')
    name = fields.Char(string="Description", required=True)
    agreement_id = fields.Many2one('agreement', string="Agreement",
                                   ondelete="cascade")
    qty = fields.Float(string='Quantity')
    uom_id = fields.Many2one('product.uom', string='Unit of Measure',
                             required=True)

    @api.onchange('product_id')
    def _onchange_product_id(self):
        self.name = self.product_id.name
        self.uom_id = self.product_id.uom_id.id