first commit

modules/sale_invoice_date/party.py

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+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+from trytond.model import fields
+from trytond.pool import Pool, PoolMeta
+from trytond.transaction import Transaction
+
+
+class Party(metaclass=PoolMeta):
+    __name__ = 'party.party'
+
+    sale_invoice_term = fields.MultiValue(fields.Many2One(
+            'sale.invoice.term', "Sale Invoice Term",
+            help="The default sale invoice term for the customer.\n"
+            "Leave empty to use the default value from the configuration."))
+
+    @classmethod
+    def multivalue_model(cls, field):
+        pool = Pool()
+        if field == 'sale_invoice_term':
+            return pool.get('party.party.sale_method')
+        return super().multivalue_model(field)
+
+    @classmethod
+    def copy(cls, parties, default=None):
+        default = default.copy() if default else {}
+        if Transaction().check_access:
+            default_values = cls.default_get(
+                ['sale_invoice_term'], with_rec_name=False)
+            default.setdefault(
+                'sale_invoice_term', default_values.get('sale_invoice_term'))
+        return super().copy(parties, default=default)
+
+
+class PartySaleMethod(metaclass=PoolMeta):
+    __name__ = 'party.party.sale_method'
+
+    sale_invoice_term = fields.Many2One(
+        'sale.invoice.term', "Sale Invoice Term", ondelete='RESTRICT')