first commit

modules/account_stock_anglo_saxon/product.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.modules.account_product.product import (
+    account_used, template_property)
+from trytond.pool import Pool, PoolMeta
+from trytond.pyson import Eval
+
+
+class Category(metaclass=PoolMeta):
+    __name__ = 'product.category'
+    account_cogs = fields.MultiValue(fields.Many2One('account.account',
+            'Account Cost of Goods Sold', domain=[
+                ('closed', '!=', True),
+                ('type.expense', '=', True),
+                ('company', '=', Eval('context', {}).get('company', -1)),
+                ],
+            states={
+                'invisible': (~Eval('context', {}, ).get('company')
+                    | Eval('account_parent')
+                    | ~Eval('accounting', False)),
+                }))
+
+    @classmethod
+    def multivalue_model(cls, field):
+        pool = Pool()
+        if field == 'account_cogs':
+            return pool.get('product.category.account')
+        return super().multivalue_model(field)
+
+    @property
+    @account_used('account_cogs')
+    def account_cogs_used(self):
+        pass
+
+    @fields.depends('accounting', 'account_cogs')
+    def on_change_accounting(self):
+        super().on_change_accounting()
+        if not self.accounting:
+            self.account_cogs = None
+
+
+class CategoryAccount(metaclass=PoolMeta):
+    __name__ = 'product.category.account'
+    account_cogs = fields.Many2One(
+        'account.account', "Account Cost of Goods Sold",
+        domain=[
+            ('closed', '!=', True),
+            ('type.expense', '=', True),
+            ('company', '=', Eval('company', -1)),
+            ])
+
+    @classmethod
+    def get_account_stock_type_statements(cls):
+        return super().get_account_stock_type_statements() + ['balance']
+
+
+class Template(metaclass=PoolMeta):
+    __name__ = 'product.template'
+
+    @property
+    @account_used('account_cogs', 'account_category')
+    def account_cogs_used(self):
+        pass
+
+
+class Product(metaclass=PoolMeta):
+    __name__ = 'product.product'
+    account_cogs_used = template_property('account_cogs_used')