add product sequence

app_product_sequence/models/product_template.py

@@ -0,0 +1,60 @@
+# -*- coding: utf-8 -*-
+
+# Created on 2017-11-05
+# author: 广州尚鹏，http://www.sunpop.cn
+# email: 300883@qq.com
+# resource of Sunpop
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+# Odoo在线中文用户手册（长期更新）
+# http://www.sunpop.cn/documentation/user/10.0/zh_CN/index.html
+
+# Odoo10离线中文用户手册下载
+# http://www.sunpop.cn/odoo10_user_manual_document_offline/
+# Odoo10离线开发手册下载-含python教程，jquery参考，Jinja2模板，PostgresSQL参考（odoo开发必备）
+# http://www.sunpop.cn/odoo10_developer_document_offline/
+# description:
+
+from openerp import api, fields, models, exceptions, _
+
+
+class ProductTemplate(models.Model):
+    _name = "product.template"
+    _inherit = ['product.template']
+
+    internal_type = fields.Many2one(
+        'product.internal.type', 'Internal Type',
+        auto_join=True, required=True)
+
+    default_code = fields.Char(
+        'Internal Reference', compute='_compute_default_code',
+        inverse='_set_default_code', store=True, readonly=True,
+        default='New', copy=False)
+    # 因为default_code有odoo的处理方式，影响面大，故会将其另存到 default_code_stored
+    default_code_stored = fields.Char('Internal Reference Stored',default='New')
+
+    @api.model
+    def create(self, vals):
+        if 'attribute_line_ids' in vals:
+            if len(vals['attribute_line_ids'])>0:
+                raise exceptions.ValidationError(_('Please save product first before adding varients!'))
+        if 'default_code' not in vals or vals['default_code'] == 'New':
+            sequence = self.env['product.internal.type'].search([('id', '=', vals['internal_type'])], limit=1)
+            vals['default_code'] = sequence.link_sequence.next_by_id()
+        vals['default_code_stored'] = vals['default_code']
+        return super(ProductTemplate, self).create(vals)
+
+    @api.depends('product_variant_ids', 'product_variant_ids.default_code')
+    def _compute_default_code(self):
+        unique_variants = self.filtered(lambda template: len(template.product_variant_ids) == 1)
+        for template in unique_variants:
+            template.default_code = template.product_variant_ids.default_code
+        for template in (self):
+            if len(template.product_variant_ids)>1:
+                template.default_code = ''
+
+    @api.one
+    def _set_default_code(self):
+        if len(self.product_variant_ids) == 1:
+            self.product_variant_ids.default_code = self.default_code_stored
+