contract/contract/models/account_analytic_invoice_line.py

# Copyright 2017 LasLabs Inc.
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).

from odoo import fields, models


class AccountAnalyticInvoiceLine(models.Model):
    _name = 'account.analytic.invoice.line'
    _inherit = 'account.analytic.contract.line'

    analytic_account_id = fields.Many2one(
        comodel_name='account.analytic.account',
        string='Analytic Account',
        required=True,
        ondelete='cascade',
    )