añadido product_secuence y product_code_unique para crear secuencias de productos por categoría

related 6

product_sequence/models/product_product.py

@@ -0,0 +1,66 @@
+# Copyright 2004 Tiny SPRL
+# Copyright 2016 Sodexis
+# Copyright 2018 Eficent Business and IT Consulting Services S.L.
+#   (http://www.eficent.com)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import _, api, fields, models
+
+
+class ProductProduct(models.Model):
+    _inherit = 'product.product'
+
+    default_code = fields.Char(
+        required=True,
+        default='/',
+        track_visibility='onchange',
+        help="Set to '/' and save if you want a new internal reference "
+             "to be proposed."
+    )
+
+    @api.model
+    def create(self, vals):
+        if 'default_code' not in vals or vals['default_code'] == '/':
+            categ_id = vals.get("categ_id")
+            template_id = vals.get("product_tmpl_id")
+            category = self.env['product.category']
+            if categ_id:
+                # Created as a product.product
+                category = category.browse(categ_id)
+            elif template_id:
+                # Created from a product.template
+                template = self.env["product.template"].browse(template_id)
+                category = template.categ_id
+            sequence = self.env["ir.sequence"].get_category_sequence_id(category)
+            vals['default_code'] = sequence.next_by_id()
+        return super().create(vals)
+
+    @api.multi
+    def write(self, vals):
+        """To assign a new internal reference, just write '/' on the field.
+        Note this is up to the user, if the product category is changed,
+        she/he will need to write '/' on the internal reference to force the
+        re-assignment."""
+        if vals.get('default_code', '') == '/':
+            product_category_obj = self.env['product.category']
+            for product in self:
+                category_id = vals.get('categ_id', product.categ_id.id)
+                category = product_category_obj.browse(category_id)
+                sequence = self.env["ir.sequence"].get_category_sequence_id(category)
+                ref = sequence.next_by_id()
+                vals['default_code'] = ref
+                if len(product.product_tmpl_id.product_variant_ids) == 1:
+                    product.product_tmpl_id.write({'default_code': ref})
+                super(ProductProduct, product).write(vals)
+            return True
+        return super().write(vals)
+
+    @api.multi
+    def copy(self, default=None):
+        if default is None:
+            default = {}
+        if self.default_code and 'default_code' not in default:
+            default.update({
+                'default_code': self.default_code + _('-copy'),
+            })
+        return super().copy(default)