[ADD] contract/contract_sale_invoicing: New module

contract_sale_invoicing/models/contract.py

@@ -0,0 +1,32 @@
+# Copyright 2018 Tecnativa - Carlos Dauden
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import api, fields, models
+
+
+class AccountAnalyticAccount(models.Model):
+    _inherit = 'account.analytic.account'
+
+    invoicing_sales = fields.Boolean(
+        string='Invoice Pending Sales Orders',
+        help='If checked include sales with same analytic account to invoice '
+             'in contract invoice creation.',
+    )
+
+    @api.multi
+    def _create_invoice(self, invoice=False):
+        if not self.invoicing_sales:
+            return super(AccountAnalyticAccount, self)._create_invoice()
+        sales = self.env['sale.order'].search([
+            ('analytic_account_id', '=', self.id),
+            ('partner_invoice_id', 'child_of',
+             self.partner_id.commercial_partner_id.ids),
+            ('invoice_status', '=', 'to invoice'),
+            ('date_order', '<=',
+             '{} 23:59:59'.format(self.recurring_next_date)),
+        ])
+        if sales:
+            invoice_ids = sales.action_invoice_create()
+            invoice = self.env['account.invoice'].browse(invoice_ids)[:1]
+        return super(AccountAnalyticAccount, self)._create_invoice(
+            invoice=invoice)