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modules/sale_subscription/service.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 DeactivableMixin, ModelSQL, ModelView, fields
+from trytond.pyson import Eval
+
+
+class Service(DeactivableMixin, ModelSQL, ModelView):
+    __name__ = 'sale.subscription.service'
+
+    product = fields.Many2One(
+        'product.product', "Product", required=True, ondelete='CASCADE',
+        domain=[
+            ('type', '=', 'service'),
+            ])
+    consumption_recurrence = fields.Many2One(
+        'sale.subscription.recurrence.rule.set', "Consumption Recurrence")
+    consumption_delay = fields.TimeDelta("Consumption Delay",
+        states={
+            'invisible': ~Eval('consumption_recurrence'),
+            })
+
+    def get_rec_name(self, name):
+        return self.product.rec_name
+
+    @classmethod
+    def search_rec_name(cls, name, clause):
+        return [('product.rec_name',) + tuple(clause[1:])]