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# Copyright 2017 Carlos Dauden - Tecnativa <carlos.dauden@tecnativa.com>
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
from odoo import api, fields, models
class ContractContract(models.Model):
_inherit = 'contract.contract'
mandate_id = fields.Many2one(
comodel_name='account.banking.mandate',
ondelete='restrict',
string='Direct Debit Mandate',
help="If mandate required in payment method and not set mandate, "
"invoice takes the first valid mandate",
index=True,
)
mandate_required = fields.Boolean(
related='payment_mode_id.payment_method_id.mandate_required',
readonly=True)
commercial_partner_id = fields.Many2one(
related='partner_id.commercial_partner_id',
readonly=True,
string='Commercial Entity',
)
@api.multi
@api.onchange('payment_mode_id')
def _onchange_payment_mode_id(self):
self.ensure_one()
if not self.mandate_required:
self.mandate_id = False
@api.multi
def _prepare_invoice(self, date_ref=False):
invoice_vals = super(ContractContract, self)._prepare_invoice(date_ref)
if self.mandate_id:
invoice_vals['mandate_id'] = self.mandate_id.id
elif self.payment_mode_id.payment_method_id.mandate_required:
mandate = self.env['account.banking.mandate'].search([
('partner_id', '=', self.partner_id.commercial_partner_id.id),
('state', '=', 'valid'),
], limit=1)
invoice_vals['mandate_id'] = mandate.id
return invoice_vals
@api.model
def _finalize_invoice_creation(self, invoices):
"""
This override preserves the contract when calling the partner's
onchange.
"""
mandates_by_invoice = {}
for invoice in invoices:
mandates_by_invoice[invoice] = invoice.mandate_id
res = super(ContractContract, self)._finalize_invoice_creation(
invoices)
for invoice in invoices:
invoice.mandate_id = mandates_by_invoice.get(invoice)
return res