book/line: felder für quantity, etc.

book.py

@@ -0,0 +1,77 @@
+# -*- coding: utf-8 -*-
+# This file is part of the cashbook-module from m-ds for 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.exceptions import UserError
+from trytond.pool import PoolMeta
+from trytond.pyson import Eval, Or, Len
+from trytond.modules.cashbook.book import STATES2, DEPENDS2
+
+
+class Book(metaclass=PoolMeta):
+    __name__ = 'cashbook.book'
+
+    asset = fields.Many2One(string='Asset',
+        model_name='investment.asset', ondelete='RESTRICT',
+        states={
+            'required': Eval('feature', '') == 'asset',
+            'invisible': Eval('feature', '') != 'asset',
+            'readonly': Or(
+                    STATES2['readonly'],
+                    Len(Eval('lines')) > 0,
+                ),
+        }, depends=DEPENDS2+['feature', 'lines'])
+    quantity_digits = fields.Integer(string='Digits',
+        help='Quantity Digits',
+        domain=[
+                ('quantity_digits', '>=', 0),
+                ('quantity_digits', '<=', 6),
+            ],
+        states={
+            'required': Eval('feature', '') == 'asset',
+            'invisible': Eval('feature', '') != 'asset',
+            'readonly': Or(
+                    STATES2['readonly'],
+                    Len(Eval('lines')) > 0,
+                ),
+        }, depends=DEPENDS2+['feature', 'lines'])
+    asset_uomcat = fields.Function(fields.Many2One(string='UOM Category',
+        readonly=True, model_name='product.uom.category',
+        states={'invisible': True}), 'on_change_with_asset_uomcat')
+    quantity_uom = fields.Many2One(string='UOM',
+        model_name='product.uom', ondelete='RESTRICT',
+        domain=[
+            ('category.id', '=', Eval('asset_uomcat', -1)),
+        ],
+        states={
+            'required': Eval('feature', '') == 'asset',
+            'invisible': Eval('feature', '') != 'asset',
+            'readonly': Or(
+                    STATES2['readonly'],
+                    Len(Eval('lines')) > 0,
+                ),
+        }, depends=DEPENDS2+['feature', 'lines', 'asset_uomcat'])
+
+    @fields.depends('asset', 'quantity_uom')
+    def on_change_asset(self):
+        """ get uom from asset
+        """
+        if self.asset:
+            self.quantity_uom = self.asset.uom.id
+
+    @classmethod
+    def default_quantity_digits(cls):
+        """ default: 4
+        """
+        return 4
+
+    @fields.depends('asset', '_parent_asset.uom')
+    def on_change_with_asset_uomcat(self, name=None):
+        """ get uom-category of asset
+        """
+        if self.asset:
+            return self.asset.uom.category.id
+
+# end Book