first commit

modules/product_attribute/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.i18n import gettext
+from trytond.model import DictSchemaMixin, ModelSQL, ModelView, Unique, fields
+from trytond.pool import PoolMeta
+from trytond.pyson import Eval
+
+
+class AttributeSet(ModelSQL, ModelView):
+    __name__ = 'product.attribute.set'
+    name = fields.Char('Name', required=True, translate=True,
+        help="The main identifier of product attribute set.")
+    attributes = fields.Many2Many('product.attribute-product.attribute-set',
+        'attribute_set', 'attribute', 'Attributes',
+        help="Add attributes to the set.")
+
+
+class Attribute(DictSchemaMixin, ModelSQL, ModelView):
+    __name__ = 'product.attribute'
+    sets = fields.Many2Many('product.attribute-product.attribute-set',
+        'attribute', 'attribute_set', 'Sets',
+        help="Add sets to the attribute.")
+
+    @classmethod
+    def __setup__(cls):
+        super().__setup__()
+        t = cls.__table__()
+        cls._sql_constraints += [
+            ('name_unique', Unique(t, t.name),
+                'product_attribute.msg_product_attribute_name_unique'),
+            ]
+
+
+class AttributeAttributeSet(ModelSQL):
+    __name__ = 'product.attribute-product.attribute-set'
+    attribute = fields.Many2One(
+        'product.attribute', "Attribute",
+        ondelete='CASCADE', required=True)
+    attribute_set = fields.Many2One(
+        'product.attribute.set', "Set",
+        ondelete='CASCADE', required=True)
+
+
+class Template(metaclass=PoolMeta):
+    __name__ = 'product.template'
+    attribute_set = fields.Many2One('product.attribute.set', 'Attribute Set',
+        help="Select a set of attributes to apply on the variants.")
+
+
+class Product(metaclass=PoolMeta):
+    __name__ = 'product.product'
+    attributes = fields.Dict('product.attribute', 'Attributes',
+        domain=[
+            ('sets', '=', Eval('_parent_template', {}).get('attribute_set',
+                    Eval('attribute_set', -1))),
+            ],
+        states={
+            'readonly': (~Eval('attribute_set')
+                & ~Eval('_parent_template', {}).get('attribute_set')),
+            },
+        depends={'template'},
+        help="Add attributes to the variant.")
+    attributes_name = fields.Function(fields.Char(
+            "Attributes Name",
+            states={
+                'invisible': ~Eval('attribute_set'),
+                }),
+        'on_change_with_attributes_name')
+
+    @fields.depends('attribute_set', 'attributes')
+    def on_change_with_attributes_name(self, name=None):
+        if not self.attribute_set or not self.attributes:
+            return
+
+        def key(attribute):
+            return getattr(attribute, 'sequence', attribute.name)
+
+        values = []
+        for attribute in sorted(self.attribute_set.attributes, key=key):
+            if attribute.name in self.attributes:
+                value = self.attributes[attribute.name]
+                values.append(gettext('product_attribute.msg_label_value',
+                        label=attribute.string,
+                        value=attribute.format(value)))
+        return " | ".join(filter(None, values))