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modules/production_routing/production.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 PoolMeta
+from trytond.pyson import Eval, If
+
+
+class BOM(metaclass=PoolMeta):
+    __name__ = 'production.bom'
+
+    routings = fields.Many2Many(
+        'production.routing-production.bom', 'bom', 'routing', "Routings")
+
+
+class Production(metaclass=PoolMeta):
+    __name__ = 'production'
+    routing = fields.Many2One('production.routing', 'Routing',
+        domain=[
+            If(Eval('state').in_(['request', 'draft']),
+                ('boms', '=', Eval('bom', 0)),
+                ()),
+            ],
+        states={
+            'readonly': ~Eval('state').in_(['request', 'draft']),
+            'invisible': ~Eval('bom'),
+            })
+
+    @fields.depends('bom', 'routing')
+    def on_change_bom(self):
+        super().on_change_bom()
+        if self.bom:
+            if self.routing:
+                if self.bom not in self.routing.boms:
+                    self.routing = None
+        else:
+            self.routing = None
+
+    @fields.depends('routing')
+    def compute_lead_time(self, pattern=None):
+        pattern = pattern.copy() if pattern is not None else {}
+        pattern.setdefault(
+            'routing', self.routing.id if self.routing else None)
+        return super().compute_lead_time(pattern=pattern)
+
+    @classmethod
+    def compute_request(
+            cls, product, warehouse, quantity, date, company,
+            order_point=None, bom_pattern=None):
+        production = super().compute_request(
+            product, warehouse, quantity, date, company,
+            order_point=order_point, bom_pattern=bom_pattern)
+        if bom := product.get_bom(bom_pattern):
+            production.routing = bom.routing
+        return production